Merge remote-tracking branch 'upstream/master'
This commit is contained in:
Sandip Singh
commit
0aef674c20
5
.gitignore
vendored
5
.gitignore
vendored
@ -57,3 +57,8 @@ core-java-io/target_link.txt
|
||||
core-java/src/main/java/com/baeldung/manifest/MANIFEST.MF
|
||||
ethereum/logs/
|
||||
jmeter/src/main/resources/*-JMeter.csv
|
||||
|
||||
**/node_modules/
|
||||
**/dist
|
||||
**/tmp
|
||||
**/out-tsc
|
||||
|
||||
13
JGit/src/main/resources/logback.xml
Normal file
13
JGit/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
13
Twitter4J/src/main/resources/logback.xml
Normal file
13
Twitter4J/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
13
activejdbc/src/main/resources/logback.xml
Normal file
13
activejdbc/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
13
akka-streams/src/main/resources/logback.xml
Normal file
13
akka-streams/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
@ -23,3 +23,4 @@
|
||||
- [Converting Between Roman and Arabic Numerals in Java](http://www.baeldung.com/java-convert-roman-arabic)
|
||||
- [Practical Java Examples of the Big O Notation](http://www.baeldung.com/java-algorithm-complexity)
|
||||
- [Find the Middle Element of a Linked List](http://www.baeldung.com/java-linked-list-middle-element)
|
||||
- [An Introduction to the Theory of Big-O Notation](http://www.baeldung.com/big-o-notation)
|
||||
|
||||
13
algorithms/src/main/resources/logback.xml
Normal file
13
algorithms/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
13
animal-sniffer-mvn-plugin/src/main/resources/logback.xml
Normal file
13
animal-sniffer-mvn-plugin/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
13
annotations/annotation-user/src/main/resources/logback.xml
Normal file
13
annotations/annotation-user/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
13
antlr/src/main/resources/logback.xml
Normal file
13
antlr/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
2
apache-avro/README.md
Normal file
2
apache-avro/README.md
Normal file
@ -0,0 +1,2 @@
|
||||
### Relevant Articles:
|
||||
- [Guide to Apache Avro](http://www.baeldung.com/java-apache-avro)
|
||||
13
apache-avro/src/main/resources/logback.xml
Normal file
13
apache-avro/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
13
apache-bval/src/main/resources/logback.xml
Normal file
13
apache-bval/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
13
apache-cayenne/src/main/resources/logback.xml
Normal file
13
apache-cayenne/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
13
apache-curator/src/main/resources/logback.xml
Normal file
13
apache-curator/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
13
apache-cxf/cxf-aegis/src/main/resources/logback.xml
Normal file
13
apache-cxf/cxf-aegis/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
13
apache-cxf/cxf-introduction/src/main/resources/logback.xml
Normal file
13
apache-cxf/cxf-introduction/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
13
apache-cxf/cxf-spring/src/main/resources/logback.xml
Normal file
13
apache-cxf/cxf-spring/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
@ -17,6 +17,7 @@
|
||||
<module>cxf-spring</module>
|
||||
<module>cxf-jaxrs-implementation</module>
|
||||
<module>cxf-aegis</module>
|
||||
<module>sse-jaxrs</module>
|
||||
</modules>
|
||||
|
||||
<build>
|
||||
|
||||
21
apache-cxf/sse-jaxrs/pom.xml
Normal file
21
apache-cxf/sse-jaxrs/pom.xml
Normal file
@ -0,0 +1,21 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<project xmlns="http://maven.apache.org/POM/4.0.0"
|
||||
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
|
||||
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
|
||||
<modelVersion>4.0.0</modelVersion>
|
||||
|
||||
<artifactId>sse-jaxrs</artifactId>
|
||||
<packaging>pom</packaging>
|
||||
|
||||
<parent>
|
||||
<groupId>com.baeldung</groupId>
|
||||
<artifactId>apache-cxf</artifactId>
|
||||
<version>0.0.1-SNAPSHOT</version>
|
||||
</parent>
|
||||
|
||||
<modules>
|
||||
<module>sse-jaxrs-server</module>
|
||||
<module>sse-jaxrs-client</module>
|
||||
</modules>
|
||||
|
||||
</project>
|
||||
62
apache-cxf/sse-jaxrs/sse-jaxrs-client/pom.xml
Normal file
62
apache-cxf/sse-jaxrs/sse-jaxrs-client/pom.xml
Normal file
@ -0,0 +1,62 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<project xmlns="http://maven.apache.org/POM/4.0.0"
|
||||
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
|
||||
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
|
||||
<modelVersion>4.0.0</modelVersion>
|
||||
|
||||
<parent>
|
||||
<groupId>com.baeldung</groupId>
|
||||
<artifactId>sse-jaxrs</artifactId>
|
||||
<version>0.0.1-SNAPSHOT</version>
|
||||
</parent>
|
||||
|
||||
<artifactId>sse-jaxrs-client</artifactId>
|
||||
|
||||
<properties>
|
||||
<cxf-version>3.2.0</cxf-version>
|
||||
</properties>
|
||||
|
||||
<build>
|
||||
<plugins>
|
||||
<plugin>
|
||||
<groupId>org.codehaus.mojo</groupId>
|
||||
<artifactId>exec-maven-plugin</artifactId>
|
||||
<version>1.6.0</version>
|
||||
<executions>
|
||||
<execution>
|
||||
<id>singleEvent</id>
|
||||
<goals>
|
||||
<goal>java</goal>
|
||||
</goals>
|
||||
<configuration>
|
||||
<mainClass>com.baeldung.sse.jaxrs.client.SseClientApp</mainClass>
|
||||
</configuration>
|
||||
</execution>
|
||||
<execution>
|
||||
<id>broadcast</id>
|
||||
<goals>
|
||||
<goal>java</goal>
|
||||
</goals>
|
||||
<configuration>
|
||||
<mainClass>com.baeldung.sse.jaxrs.client.SseClientBroadcastApp</mainClass>
|
||||
</configuration>
|
||||
</execution>
|
||||
</executions>
|
||||
</plugin>
|
||||
</plugins>
|
||||
</build>
|
||||
|
||||
<dependencies>
|
||||
<dependency>
|
||||
<groupId>org.apache.cxf</groupId>
|
||||
<artifactId>cxf-rt-rs-client</artifactId>
|
||||
<version>${cxf-version}</version>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>org.apache.cxf</groupId>
|
||||
<artifactId>cxf-rt-rs-sse</artifactId>
|
||||
<version>${cxf-version}</version>
|
||||
</dependency>
|
||||
</dependencies>
|
||||
|
||||
</project>
|
||||
@ -0,0 +1,48 @@
|
||||
package com.baeldung.sse.jaxrs.client;
|
||||
|
||||
import javax.ws.rs.client.Client;
|
||||
import javax.ws.rs.client.ClientBuilder;
|
||||
import javax.ws.rs.client.WebTarget;
|
||||
import javax.ws.rs.sse.InboundSseEvent;
|
||||
import javax.ws.rs.sse.SseEventSource;
|
||||
import java.util.function.Consumer;
|
||||
|
||||
public class SseClientApp {
|
||||
|
||||
private static final String url = "http://127.0.0.1:9080/sse-jaxrs-server/sse/stock/prices";
|
||||
|
||||
public static void main(String... args) throws Exception {
|
||||
|
||||
Client client = ClientBuilder.newClient();
|
||||
WebTarget target = client.target(url);
|
||||
try (SseEventSource eventSource = SseEventSource.target(target).build()) {
|
||||
|
||||
eventSource.register(onEvent, onError, onComplete);
|
||||
eventSource.open();
|
||||
|
||||
//Consuming events for one hour
|
||||
Thread.sleep(60 * 60 * 1000);
|
||||
} catch (InterruptedException e) {
|
||||
e.printStackTrace();
|
||||
}
|
||||
client.close();
|
||||
System.out.println("End");
|
||||
}
|
||||
|
||||
// A new event is received
|
||||
private static Consumer<InboundSseEvent> onEvent = (inboundSseEvent) -> {
|
||||
String data = inboundSseEvent.readData();
|
||||
System.out.println(data);
|
||||
};
|
||||
|
||||
//Error
|
||||
private static Consumer<Throwable> onError = (throwable) -> {
|
||||
throwable.printStackTrace();
|
||||
};
|
||||
|
||||
//Connection close and there is nothing to receive
|
||||
private static Runnable onComplete = () -> {
|
||||
System.out.println("Done!");
|
||||
};
|
||||
|
||||
}
|
||||
@ -0,0 +1,52 @@
|
||||
package com.baeldung.sse.jaxrs.client;
|
||||
|
||||
import javax.ws.rs.client.Client;
|
||||
import javax.ws.rs.client.ClientBuilder;
|
||||
import javax.ws.rs.client.WebTarget;
|
||||
import javax.ws.rs.sse.InboundSseEvent;
|
||||
import javax.ws.rs.sse.SseEventSource;
|
||||
import java.util.concurrent.TimeUnit;
|
||||
import java.util.function.Consumer;
|
||||
|
||||
public class SseClientBroadcastApp {
|
||||
|
||||
private static final String subscribeUrl = "http://localhost:9080/sse-jaxrs-server/sse/stock/subscribe";
|
||||
|
||||
|
||||
public static void main(String... args) throws Exception {
|
||||
|
||||
Client client = ClientBuilder.newClient();
|
||||
WebTarget target = client.target(subscribeUrl);
|
||||
try (final SseEventSource eventSource = SseEventSource.target(target)
|
||||
.reconnectingEvery(5, TimeUnit.SECONDS)
|
||||
.build()) {
|
||||
eventSource.register(onEvent, onError, onComplete);
|
||||
eventSource.open();
|
||||
System.out.println("Wainting for incoming event ...");
|
||||
|
||||
//Consuming events for one hour
|
||||
Thread.sleep(60 * 60 * 1000);
|
||||
} catch (InterruptedException e) {
|
||||
e.printStackTrace();
|
||||
}
|
||||
client.close();
|
||||
System.out.println("End");
|
||||
}
|
||||
|
||||
// A new event is received
|
||||
private static Consumer<InboundSseEvent> onEvent = (inboundSseEvent) -> {
|
||||
String data = inboundSseEvent.readData();
|
||||
System.out.println(data);
|
||||
};
|
||||
|
||||
//Error
|
||||
private static Consumer<Throwable> onError = (throwable) -> {
|
||||
throwable.printStackTrace();
|
||||
};
|
||||
|
||||
//Connection close and there is nothing to receive
|
||||
private static Runnable onComplete = () -> {
|
||||
System.out.println("Done!");
|
||||
};
|
||||
|
||||
}
|
||||
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
85
apache-cxf/sse-jaxrs/sse-jaxrs-server/pom.xml
Normal file
85
apache-cxf/sse-jaxrs/sse-jaxrs-server/pom.xml
Normal file
@ -0,0 +1,85 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<project xmlns="http://maven.apache.org/POM/4.0.0"
|
||||
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
|
||||
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
|
||||
<modelVersion>4.0.0</modelVersion>
|
||||
|
||||
<parent>
|
||||
<groupId>com.baeldung</groupId>
|
||||
<artifactId>sse-jaxrs</artifactId>
|
||||
<version>0.0.1-SNAPSHOT</version>
|
||||
</parent>
|
||||
|
||||
<artifactId>sse-jaxrs-server</artifactId>
|
||||
<packaging>war</packaging>
|
||||
|
||||
<properties>
|
||||
<liberty-maven-plugin.version>2.4.2</liberty-maven-plugin.version>
|
||||
<failOnMissingWebXml>false</failOnMissingWebXml>
|
||||
<openliberty-version>18.0.0.2</openliberty-version>
|
||||
</properties>
|
||||
|
||||
<build>
|
||||
<finalName>${artifactId}</finalName>
|
||||
<plugins>
|
||||
<plugin>
|
||||
<groupId>net.wasdev.wlp.maven.plugins</groupId>
|
||||
<artifactId>liberty-maven-plugin</artifactId>
|
||||
<version>${liberty-maven-plugin.version}</version>
|
||||
<configuration>
|
||||
<assemblyArtifact>
|
||||
<groupId>io.openliberty</groupId>
|
||||
<artifactId>openliberty-webProfile8</artifactId>
|
||||
<version>${openliberty-version}</version>
|
||||
<type>zip</type>
|
||||
</assemblyArtifact>
|
||||
<installAppPackages>project</installAppPackages>
|
||||
<looseApplication>true</looseApplication>
|
||||
<configFile>src/main/liberty/config/server.xml</configFile>
|
||||
</configuration>
|
||||
<executions>
|
||||
<execution>
|
||||
<id>install-server</id>
|
||||
<phase>prepare-package</phase>
|
||||
<goals>
|
||||
<goal>install-server</goal>
|
||||
<goal>create-server</goal>
|
||||
<goal>install-feature</goal>
|
||||
</goals>
|
||||
</execution>
|
||||
<execution>
|
||||
<id>install-apps</id>
|
||||
<phase>package</phase>
|
||||
<goals>
|
||||
<goal>install-apps</goal>
|
||||
</goals>
|
||||
</execution>
|
||||
</executions>
|
||||
</plugin>
|
||||
</plugins>
|
||||
</build>
|
||||
|
||||
<dependencies>
|
||||
|
||||
<dependency>
|
||||
<groupId>javax.ws.rs</groupId>
|
||||
<artifactId>javax.ws.rs-api</artifactId>
|
||||
<version>2.1</version>
|
||||
<scope>provided</scope>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>javax.enterprise</groupId>
|
||||
<artifactId>cdi-api</artifactId>
|
||||
<version>2.0</version>
|
||||
<scope>provided</scope>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>javax.json.bind</groupId>
|
||||
<artifactId>javax.json.bind-api</artifactId>
|
||||
<version>1.0</version>
|
||||
<scope>provided</scope>
|
||||
</dependency>
|
||||
|
||||
</dependencies>
|
||||
|
||||
</project>
|
||||
@ -0,0 +1,8 @@
|
||||
package com.baeldung.sse.jaxrs;
|
||||
|
||||
import javax.ws.rs.ApplicationPath;
|
||||
import javax.ws.rs.core.Application;
|
||||
|
||||
@ApplicationPath("sse")
|
||||
public class AppConfig extends Application {
|
||||
}
|
||||
@ -0,0 +1,119 @@
|
||||
package com.baeldung.sse.jaxrs;
|
||||
|
||||
import javax.enterprise.context.ApplicationScoped;
|
||||
import javax.inject.Inject;
|
||||
import javax.ws.rs.*;
|
||||
import javax.ws.rs.core.Context;
|
||||
import javax.ws.rs.core.HttpHeaders;
|
||||
import javax.ws.rs.core.MediaType;
|
||||
import javax.ws.rs.sse.OutboundSseEvent;
|
||||
import javax.ws.rs.sse.Sse;
|
||||
import javax.ws.rs.sse.SseBroadcaster;
|
||||
import javax.ws.rs.sse.SseEventSink;
|
||||
|
||||
@ApplicationScoped
|
||||
@Path("stock")
|
||||
public class SseResource {
|
||||
|
||||
@Inject
|
||||
private StockService stockService;
|
||||
|
||||
private Sse sse;
|
||||
private SseBroadcaster sseBroadcaster;
|
||||
private OutboundSseEvent.Builder eventBuilder;
|
||||
|
||||
@Context
|
||||
public void setSse(Sse sse) {
|
||||
this.sse = sse;
|
||||
this.eventBuilder = sse.newEventBuilder();
|
||||
this.sseBroadcaster = sse.newBroadcaster();
|
||||
}
|
||||
|
||||
@GET
|
||||
@Path("prices")
|
||||
@Produces("text/event-stream")
|
||||
public void getStockPrices(@Context SseEventSink sseEventSink,
|
||||
@HeaderParam(HttpHeaders.LAST_EVENT_ID_HEADER) @DefaultValue("-1") int lastReceivedId) {
|
||||
|
||||
int lastEventId = 1;
|
||||
if (lastReceivedId != -1) {
|
||||
lastEventId = ++lastReceivedId;
|
||||
}
|
||||
boolean running = true;
|
||||
while (running) {
|
||||
Stock stock = stockService.getNextTransaction(lastEventId);
|
||||
if (stock != null) {
|
||||
OutboundSseEvent sseEvent = this.eventBuilder
|
||||
.name("stock")
|
||||
.id(String.valueOf(lastEventId))
|
||||
.mediaType(MediaType.APPLICATION_JSON_TYPE)
|
||||
.data(Stock.class, stock)
|
||||
.reconnectDelay(3000)
|
||||
.comment("price change")
|
||||
.build();
|
||||
sseEventSink.send(sseEvent);
|
||||
lastEventId++;
|
||||
}
|
||||
//Simulate connection close
|
||||
if (lastEventId % 5 == 0) {
|
||||
sseEventSink.close();
|
||||
break;
|
||||
}
|
||||
|
||||
try {
|
||||
//Wait 5 seconds
|
||||
Thread.sleep(5 * 1000);
|
||||
} catch (InterruptedException ex) {
|
||||
// ...
|
||||
}
|
||||
//Simulatae a while boucle break
|
||||
running = lastEventId <= 2000;
|
||||
}
|
||||
sseEventSink.close();
|
||||
}
|
||||
|
||||
@GET
|
||||
@Path("subscribe")
|
||||
@Produces(MediaType.SERVER_SENT_EVENTS)
|
||||
public void listen(@Context SseEventSink sseEventSink) {
|
||||
sseEventSink.send(sse.newEvent("Welcome !"));
|
||||
this.sseBroadcaster.register(sseEventSink);
|
||||
sseEventSink.send(sse.newEvent("You are registred !"));
|
||||
}
|
||||
|
||||
@GET
|
||||
@Path("publish")
|
||||
public void broadcast() {
|
||||
Runnable r = new Runnable() {
|
||||
@Override
|
||||
public void run() {
|
||||
int lastEventId = 0;
|
||||
boolean running = true;
|
||||
while (running) {
|
||||
lastEventId++;
|
||||
Stock stock = stockService.getNextTransaction(lastEventId);
|
||||
if (stock != null) {
|
||||
OutboundSseEvent sseEvent = eventBuilder
|
||||
.name("stock")
|
||||
.id(String.valueOf(lastEventId))
|
||||
.mediaType(MediaType.APPLICATION_JSON_TYPE)
|
||||
.data(Stock.class, stock)
|
||||
.reconnectDelay(3000)
|
||||
.comment("price change")
|
||||
.build();
|
||||
sseBroadcaster.broadcast(sseEvent);
|
||||
}
|
||||
try {
|
||||
//Wait 5 seconds
|
||||
Thread.currentThread().sleep(5 * 1000);
|
||||
} catch (InterruptedException ex) {
|
||||
// ...
|
||||
}
|
||||
//Simulatae a while boucle break
|
||||
running = lastEventId <= 2000;
|
||||
}
|
||||
}
|
||||
};
|
||||
new Thread(r).start();
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,50 @@
|
||||
package com.baeldung.sse.jaxrs;
|
||||
|
||||
import java.math.BigDecimal;
|
||||
import java.time.LocalDateTime;
|
||||
|
||||
public class Stock {
|
||||
private Integer id;
|
||||
private String name;
|
||||
private BigDecimal price;
|
||||
LocalDateTime dateTime;
|
||||
|
||||
public Stock(Integer id, String name, BigDecimal price, LocalDateTime dateTime) {
|
||||
this.id = id;
|
||||
this.name = name;
|
||||
this.price = price;
|
||||
this.dateTime = dateTime;
|
||||
}
|
||||
|
||||
public Integer getId() {
|
||||
return id;
|
||||
}
|
||||
|
||||
public void setId(Integer id) {
|
||||
this.id = id;
|
||||
}
|
||||
|
||||
public String getName() {
|
||||
return name;
|
||||
}
|
||||
|
||||
public void setName(String name) {
|
||||
this.name = name;
|
||||
}
|
||||
|
||||
public BigDecimal getPrice() {
|
||||
return price;
|
||||
}
|
||||
|
||||
public void setPrice(BigDecimal price) {
|
||||
this.price = price;
|
||||
}
|
||||
|
||||
public LocalDateTime getDateTime() {
|
||||
return dateTime;
|
||||
}
|
||||
|
||||
public void setDateTime(LocalDateTime dateTime) {
|
||||
this.dateTime = dateTime;
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,78 @@
|
||||
package com.baeldung.sse.jaxrs;
|
||||
|
||||
import javax.enterprise.context.ApplicationScoped;
|
||||
import javax.enterprise.context.Initialized;
|
||||
import javax.enterprise.event.Event;
|
||||
import javax.enterprise.event.Observes;
|
||||
import javax.inject.Inject;
|
||||
import javax.inject.Named;
|
||||
import java.math.BigDecimal;
|
||||
import java.math.RoundingMode;
|
||||
import java.time.LocalDateTime;
|
||||
import java.util.ArrayList;
|
||||
import java.util.Arrays;
|
||||
import java.util.List;
|
||||
import java.util.Random;
|
||||
import java.util.concurrent.atomic.AtomicInteger;
|
||||
|
||||
@ApplicationScoped
|
||||
@Named
|
||||
public class StockService {
|
||||
|
||||
private static final BigDecimal UP = BigDecimal.valueOf(1.05f);
|
||||
private static final BigDecimal DOWN = BigDecimal.valueOf(0.95f);
|
||||
|
||||
List<String> stockNames = Arrays.asList("GOOG", "IBM", "MS", "GOOG", "YAHO");
|
||||
List<Stock> stocksDB = new ArrayList<>();
|
||||
private AtomicInteger counter = new AtomicInteger(0);
|
||||
|
||||
public void init(@Observes @Initialized(ApplicationScoped.class) Object init) {
|
||||
//Open price
|
||||
System.out.println("@Start Init ...");
|
||||
stockNames.forEach(stockName -> {
|
||||
stocksDB.add(new Stock(counter.incrementAndGet(), stockName, generateOpenPrice(), LocalDateTime.now()));
|
||||
});
|
||||
|
||||
Runnable runnable = new Runnable() {
|
||||
@Override
|
||||
public void run() {
|
||||
//Simulate Change price and put every x seconds
|
||||
while (true) {
|
||||
int indx = new Random().nextInt(stockNames.size());
|
||||
String stockName = stockNames.get(indx);
|
||||
BigDecimal price = getLastPrice(stockName);
|
||||
BigDecimal newprice = changePrice(price);
|
||||
Stock stock = new Stock(counter.incrementAndGet(), stockName, newprice, LocalDateTime.now());
|
||||
stocksDB.add(stock);
|
||||
|
||||
int r = new Random().nextInt(30);
|
||||
try {
|
||||
Thread.currentThread().sleep(r*1000);
|
||||
} catch (InterruptedException ex) {
|
||||
// ...
|
||||
}
|
||||
}
|
||||
}
|
||||
};
|
||||
new Thread(runnable).start();
|
||||
System.out.println("@End Init ...");
|
||||
}
|
||||
|
||||
public Stock getNextTransaction(Integer lastEventId) {
|
||||
return stocksDB.stream().filter(s -> s.getId().equals(lastEventId)).findFirst().orElse(null);
|
||||
}
|
||||
|
||||
BigDecimal generateOpenPrice() {
|
||||
float min = 70;
|
||||
float max = 120;
|
||||
return BigDecimal.valueOf(min + new Random().nextFloat() * (max - min)).setScale(4,RoundingMode.CEILING);
|
||||
}
|
||||
|
||||
BigDecimal changePrice(BigDecimal price) {
|
||||
return Math.random() >= 0.5 ? price.multiply(UP).setScale(4,RoundingMode.CEILING) : price.multiply(DOWN).setScale(4,RoundingMode.CEILING);
|
||||
}
|
||||
|
||||
private BigDecimal getLastPrice(String stockName) {
|
||||
return stocksDB.stream().filter(stock -> stock.getName().equals(stockName)).findFirst().get().getPrice();
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,7 @@
|
||||
<server description="OpenLiberty Server">
|
||||
<featureManager>
|
||||
<feature>jaxrs-2.1</feature>
|
||||
<feature>cdi-2.0</feature>
|
||||
</featureManager>
|
||||
<httpEndpoint httpPort="9080" httpsPort="9443" id="defaultHttpEndpoint" host="*"/>
|
||||
</server>
|
||||
@ -0,0 +1,6 @@
|
||||
<beans xmlns="http://xmlns.jcp.org/xml/ns/javaee"
|
||||
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
|
||||
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
|
||||
http://xmlns.jcp.org/xml/ns/javaee/beans_2_0.xsd"
|
||||
bean-discovery-mode="all">
|
||||
</beans>
|
||||
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
@ -0,0 +1,11 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
|
||||
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
|
||||
version="4.0">
|
||||
<display-name>Hello Servlet</display-name>
|
||||
|
||||
<welcome-file-list>
|
||||
<welcome-file>index.html</welcome-file>
|
||||
</welcome-file-list>
|
||||
|
||||
</web-app>
|
||||
@ -0,0 +1 @@
|
||||
index
|
||||
@ -0,0 +1,38 @@
|
||||
<!DOCTYPE html>
|
||||
<html>
|
||||
<head>
|
||||
<title>Server-Sent Event Broadcasting</title>
|
||||
</head>
|
||||
<body>
|
||||
<h2>Stock prices :</h2>
|
||||
<div>
|
||||
<ul id="data">
|
||||
</ul>
|
||||
</div>
|
||||
<script>
|
||||
|
||||
var source = new EventSource('sse/stock/subscribe');
|
||||
source.onopen = function(event) {
|
||||
console.log(event);
|
||||
};
|
||||
source.addEventListener("stock", function(event) {
|
||||
append(event.data);
|
||||
}, false);
|
||||
|
||||
source.onmessage = function(event) {
|
||||
append(event.data);
|
||||
};
|
||||
source.onerror = function(event) {
|
||||
console.log(event);
|
||||
};
|
||||
|
||||
function append(data) {
|
||||
var ul = document.getElementById("data");
|
||||
var li = document.createElement("li");
|
||||
li.appendChild(document.createTextNode(data));
|
||||
ul.insertBefore(li, ul.childNodes[0]);
|
||||
};
|
||||
|
||||
</script>
|
||||
</body>
|
||||
</html>
|
||||
@ -0,0 +1,38 @@
|
||||
<!DOCTYPE html>
|
||||
<html>
|
||||
<head>
|
||||
<title>Server-Sent Event</title>
|
||||
</head>
|
||||
<body>
|
||||
<h2>Stock prices :</h2>
|
||||
<div>
|
||||
<ul id="data">
|
||||
</ul>
|
||||
</div>
|
||||
<script>
|
||||
|
||||
var source = new EventSource('sse/stock/prices');
|
||||
source.onopen = function(event) {
|
||||
console.log(event);
|
||||
};
|
||||
source.addEventListener("stock", function(event) {
|
||||
append(event.data);
|
||||
}, false);
|
||||
|
||||
source.onmessage = function(event) {
|
||||
append(event.data);
|
||||
};
|
||||
source.onerror = function(event) {
|
||||
console.log(event);
|
||||
};
|
||||
|
||||
function append(data) {
|
||||
var ul = document.getElementById("data");
|
||||
var li = document.createElement("li");
|
||||
li.appendChild(document.createTextNode(data));
|
||||
ul.insertBefore(li, ul.childNodes[0]);
|
||||
};
|
||||
|
||||
</script>
|
||||
</body>
|
||||
</html>
|
||||
3
apache-meecrowave/README.md
Normal file
3
apache-meecrowave/README.md
Normal file
@ -0,0 +1,3 @@
|
||||
### Relevant Articles:
|
||||
================================
|
||||
- [Building a Microservice with Apache Meecrowave](http://www.baeldung.com/apache-meecrowave)
|
||||
13
apache-meecrowave/src/main/resources/logback.xml
Normal file
13
apache-meecrowave/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
13
apache-opennlp/src/main/resources/logback.xml
Normal file
13
apache-opennlp/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
13
apache-poi/src/main/resources/logback.xml
Normal file
13
apache-poi/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
@ -8,9 +8,10 @@
|
||||
<version>1.0-SNAPSHOT</version>
|
||||
|
||||
<parent>
|
||||
<groupId>org.springframework.boot</groupId>
|
||||
<artifactId>spring-boot-starter-parent</artifactId>
|
||||
<version>1.5.2.RELEASE</version>
|
||||
<artifactId>parent-boot-1</artifactId>
|
||||
<groupId>com.baeldung</groupId>
|
||||
<version>0.0.1-SNAPSHOT</version>
|
||||
<relativePath>../parent-boot-1</relativePath>
|
||||
</parent>
|
||||
|
||||
<dependencies>
|
||||
|
||||
13
apache-solrj/src/main/resources/logback.xml
Normal file
13
apache-solrj/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
13
apache-spark/src/main/resources/logback.xml
Normal file
13
apache-spark/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
13
apache-thrift/src/main/resources/logback.xml
Normal file
13
apache-thrift/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
13
apache-tika/src/main/resources/logback.xml
Normal file
13
apache-tika/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
13
apache-zookeeper/src/main/resources/logback.xml
Normal file
13
apache-zookeeper/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
13
asciidoctor/src/main/resources/logback.xml
Normal file
13
asciidoctor/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
13
asm/src/main/resources/logback.xml
Normal file
13
asm/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
13
atomix/src/main/resources/logback.xml
Normal file
13
atomix/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
13
autovalue/src/main/resources/logback.xml
Normal file
13
autovalue/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
13
aws-lambda/src/main/resources/logback.xml
Normal file
13
aws-lambda/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
13
aws/src/main/resources/logback.xml
Normal file
13
aws/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
13
axon/src/main/resources/logback.xml
Normal file
13
axon/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
13
azure/src/main/resources/logback.xml
Normal file
13
azure/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
13
bootique/src/main/resources/logback.xml
Normal file
13
bootique/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
@ -10,10 +10,10 @@
|
||||
<description>Demo project for Spring Boot</description>
|
||||
|
||||
<parent>
|
||||
<groupId>org.springframework.boot</groupId>
|
||||
<artifactId>spring-boot-starter-parent</artifactId>
|
||||
<version>1.5.13.RELEASE</version>
|
||||
<relativePath /> <!-- lookup parent from repository -->
|
||||
<artifactId>parent-boot-1</artifactId>
|
||||
<groupId>com.baeldung</groupId>
|
||||
<version>0.0.1-SNAPSHOT</version>
|
||||
<relativePath>../../parent-boot-1</relativePath>
|
||||
</parent>
|
||||
|
||||
<dependencies>
|
||||
|
||||
13
cas/cas-secured-app/src/main/resources/logback.xml
Normal file
13
cas/cas-secured-app/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
13
cdi/src/main/resources/logback.xml
Normal file
13
cdi/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
13
checker-plugin/src/main/resources/logback.xml
Normal file
13
checker-plugin/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
13
core-groovy/src/main/resources/logback.xml
Normal file
13
core-groovy/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
@ -3,3 +3,4 @@
|
||||
|
||||
- [Java 10 LocalVariable Type-Inference](http://www.baeldung.com/java-10-local-variable-type-inference)
|
||||
- [Guide to Java 10](http://www.baeldung.com/java-10-overview)
|
||||
- [Copy a List to Another List in Java](http://www.baeldung.com/java-copy-list-to-another)
|
||||
|
||||
13
core-java-10/src/main/resources/logback.xml
Normal file
13
core-java-10/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
13
core-java-11/src/main/resources/logback.xml
Normal file
13
core-java-11/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
@ -46,7 +46,6 @@
|
||||
- [Overview of Java Built-in Annotations](http://www.baeldung.com/java-default-annotations)
|
||||
- [Finding Min/Max in an Array with Java](http://www.baeldung.com/java-array-min-max)
|
||||
- [Internationalization and Localization in Java 8](http://www.baeldung.com/java-8-localization)
|
||||
- [Filtering Kotlin Collections](http://www.baeldung.com/kotlin-filter-collection)
|
||||
- [How to Find an Element in a List with Java](http://www.baeldung.com/find-list-element-java)
|
||||
- [Measure Elapsed Time in Java](http://www.baeldung.com/java-measure-elapsed-time)
|
||||
- [Java Optional – orElse() vs orElseGet()](http://www.baeldung.com/java-optional-or-else-vs-or-else-get)
|
||||
@ -55,3 +54,9 @@
|
||||
- [Java 8 Unsigned Arithmetic Support](http://www.baeldung.com/java-unsigned-arithmetic)
|
||||
- [How to Get the Start and the End of a Day using Java](http://www.baeldung.com/java-day-start-end)
|
||||
- [Generalized Target-Type Inference in Java](http://www.baeldung.com/java-generalized-target-type-inference)
|
||||
- [Image to Base64 String Conversion](http://www.baeldung.com/java-base64-image-string)
|
||||
- [Calculate Age in Java](http://www.baeldung.com/java-get-age)
|
||||
- [Copy a List to Another List in Java](http://www.baeldung.com/java-copy-list-to-another)
|
||||
- [Increment Date in Java](http://www.baeldung.com/java-increment-date)
|
||||
- [Add Hours To a Date In Java](http://www.baeldung.com/java-add-hours-date)
|
||||
- [Overriding System Time for Testing in Java](http://www.baeldung.com/java-override-system-time)
|
||||
|
||||
@ -0,0 +1,19 @@
|
||||
package com.baeldung.nullsafecollectionstreams;
|
||||
|
||||
import java.util.Collection;
|
||||
import java.util.stream.Stream;
|
||||
import static org.apache.commons.collections4.CollectionUtils.emptyIfNull;
|
||||
|
||||
public class NullSafeCollectionStreamsUsingCommonsEmptyIfNull {
|
||||
|
||||
/**
|
||||
* This method shows how to make a null safe stream from a collection through the use of
|
||||
* emptyIfNull() method from Apache Commons CollectionUtils library
|
||||
*
|
||||
* @param collection The collection that is to be converted into a stream
|
||||
* @return The stream that has been created from the collection or an empty stream if the collection is null
|
||||
*/
|
||||
public Stream<String> collectionAsStream(Collection<String> collection) {
|
||||
return emptyIfNull(collection).stream();
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,21 @@
|
||||
package com.baeldung.nullsafecollectionstreams;
|
||||
|
||||
import java.util.Collection;
|
||||
import java.util.Optional;
|
||||
import java.util.stream.Stream;
|
||||
|
||||
public class NullSafeCollectionStreamsUsingJava8OptionalContainer {
|
||||
|
||||
/**
|
||||
* This method shows how to make a null safe stream from a collection through the use of
|
||||
* Java SE 8’s Optional Container
|
||||
*
|
||||
* @param collection The collection that is to be converted into a stream
|
||||
* @return The stream that has been created from the collection or an empty stream if the collection is null
|
||||
*/
|
||||
public Stream<String> collectionAsStream(Collection<String> collection) {
|
||||
return Optional.ofNullable(collection)
|
||||
.map(Collection::stream)
|
||||
.orElseGet(Stream::empty);
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,20 @@
|
||||
package com.baeldung.nullsafecollectionstreams;
|
||||
|
||||
import java.util.Collection;
|
||||
import java.util.stream.Stream;
|
||||
|
||||
public class NullSafeCollectionStreamsUsingNullDereferenceCheck {
|
||||
|
||||
/**
|
||||
* This method shows how to make a null safe stream from a collection through the use of a check
|
||||
* to prevent null dereferences
|
||||
*
|
||||
* @param collection The collection that is to be converted into a stream
|
||||
* @return The stream that has been created from the collection or an empty stream if the collection is null
|
||||
*/
|
||||
public Stream<String> collectionAsStream(Collection<String> collection) {
|
||||
return collection == null ? Stream.empty() : collection.stream();
|
||||
}
|
||||
|
||||
|
||||
}
|
||||
13
core-java-8/src/main/resources/logback.xml
Normal file
13
core-java-8/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
@ -0,0 +1,72 @@
|
||||
package com.baeldung.datetime;
|
||||
|
||||
import java.text.SimpleDateFormat;
|
||||
import java.time.Instant;
|
||||
import java.time.ZoneId;
|
||||
import java.time.ZonedDateTime;
|
||||
import java.time.format.DateTimeFormatter;
|
||||
import java.util.Calendar;
|
||||
import java.util.Date;
|
||||
import java.util.TimeZone;
|
||||
|
||||
import org.joda.time.DateTime;
|
||||
import org.joda.time.DateTimeZone;
|
||||
import org.junit.Assert;
|
||||
import org.junit.Test;
|
||||
|
||||
public class UseTimeZoneUnitTest {
|
||||
|
||||
/* https://en.wikipedia.org/wiki/List_of_tz_database_time_zones */
|
||||
|
||||
String timeZone = "Asia/Singapore";
|
||||
|
||||
private static final String PATTERN = "E yyyy-MM-dd HH:mm:ss a";
|
||||
|
||||
@Test
|
||||
public void givenDateWithoutTimeZone_WhenSetTimeZoneUsingJava7_ThenTimeZoneIsSetSuccessfully() {
|
||||
Date nowUtc = new Date();
|
||||
TimeZone asiaSingapore = TimeZone.getTimeZone(timeZone);
|
||||
|
||||
Calendar nowAsiaSingapore = Calendar.getInstance(asiaSingapore);
|
||||
nowAsiaSingapore.setTime(nowUtc);
|
||||
|
||||
SimpleDateFormat simpleDateFormat = new SimpleDateFormat(PATTERN);
|
||||
simpleDateFormat.setTimeZone(TimeZone.getTimeZone(timeZone));
|
||||
|
||||
System.out.println(String.format("Java7: Time now in '%s' is '%s'", nowAsiaSingapore.getTimeZone()
|
||||
.getID(), simpleDateFormat.format(nowAsiaSingapore.getTime())));
|
||||
|
||||
Assert.assertEquals(nowUtc.toInstant().getEpochSecond(), nowAsiaSingapore.toInstant().getEpochSecond());
|
||||
Assert.assertEquals(asiaSingapore, nowAsiaSingapore.getTimeZone());
|
||||
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenDateWithoutTimeZone_WhenSetTimeZoneUsingJava8_ThenTimeZoneIsSetSuccessfully() {
|
||||
Instant nowUtc = Instant.now();
|
||||
ZoneId asiaSingapore = ZoneId.of(timeZone);
|
||||
|
||||
ZonedDateTime nowAsiaSingapore = ZonedDateTime.ofInstant(nowUtc, asiaSingapore);
|
||||
|
||||
System.out.println(String.format("Java8: Time now in '%s' is '%s'", nowAsiaSingapore.getZone(),
|
||||
nowAsiaSingapore.format(DateTimeFormatter.ofPattern(PATTERN))));
|
||||
|
||||
Assert.assertEquals(nowUtc.getEpochSecond(), nowAsiaSingapore.toEpochSecond());
|
||||
Assert.assertEquals(asiaSingapore, nowAsiaSingapore.getZone());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenDateWithoutTimeZone_WhenSetTimeZoneUsingJodaTime_ThenTimeZoneIsSetSuccessfully() {
|
||||
org.joda.time.Instant nowUtc = org.joda.time.Instant.now();
|
||||
DateTimeZone asiaSingapore = DateTimeZone.forID(timeZone);
|
||||
|
||||
DateTime nowAsiaSingapore = nowUtc.toDateTime(asiaSingapore);
|
||||
|
||||
System.out.println(String.format("Joda-time: Time now in '%s' is '%s'", nowAsiaSingapore.getZone(),
|
||||
nowAsiaSingapore.toString(PATTERN)));
|
||||
|
||||
Assert.assertEquals(nowUtc.toInstant().getMillis(), nowAsiaSingapore.toInstant().getMillis());
|
||||
Assert.assertEquals(asiaSingapore, nowAsiaSingapore.getZone());
|
||||
}
|
||||
|
||||
}
|
||||
@ -0,0 +1,87 @@
|
||||
package com.baeldung.list;
|
||||
|
||||
import org.junit.Assert;
|
||||
import org.junit.Before;
|
||||
import org.junit.Test;
|
||||
|
||||
import java.util.*;
|
||||
|
||||
import static org.junit.Assert.*;
|
||||
|
||||
public class AddElementsUnitTest {
|
||||
|
||||
List<Flower> flowers;
|
||||
|
||||
@Before
|
||||
public void init() {
|
||||
this.flowers = new ArrayList<>(Arrays.asList(
|
||||
new Flower("Poppy", 12),
|
||||
new Flower("Anemone", 8),
|
||||
new Flower("Catmint", 12)));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenAList_whenTargetListIsEmpty_thenReturnTargetListWithNewItems() {
|
||||
List<Flower> anotherList = new ArrayList<>();
|
||||
anotherList.addAll(flowers);
|
||||
|
||||
assertEquals(anotherList.size(), flowers.size());
|
||||
Assert.assertTrue(anotherList.containsAll(flowers));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenAList_whenTargetListIsEmpty_thenReturnTargetListWithOneModifiedElementByConstructor() {
|
||||
List<Flower> anotherList = new ArrayList<>();
|
||||
anotherList.addAll(flowers);
|
||||
|
||||
Flower flower = anotherList.get(0);
|
||||
flower.setPetals(flowers.get(0).getPetals() * 3);
|
||||
|
||||
assertEquals(anotherList.size(), flowers.size());
|
||||
Assert.assertTrue(anotherList.containsAll(flowers));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenAListAndElements_whenUseCollectionsAddAll_thenAddElementsToTargetList() {
|
||||
List<Flower> target = new ArrayList<>();
|
||||
|
||||
Collections.addAll(target, flowers.get(0), flowers.get(1), flowers.get(2), flowers.get(0));
|
||||
|
||||
assertEquals(target.size(), 4);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenTwoList_whenSourceListDoesNotHaveNullElements_thenAddElementsToTargetListSkipFirstElementByStreamProcess() {
|
||||
List<Flower> flowerVase = new ArrayList<>();
|
||||
|
||||
flowers.stream()
|
||||
.skip(1)
|
||||
.forEachOrdered(flowerVase::add);
|
||||
|
||||
assertEquals(flowerVase.size() + 1, flowers.size());
|
||||
assertFalse(flowerVase.containsAll(flowers));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenTwoList_whenSourceListDoesNotHaveNullElements_thenAddElementsToTargetListFilteringElementsByStreamProcess() {
|
||||
List<Flower> flowerVase = new ArrayList<>();
|
||||
|
||||
flowers.stream()
|
||||
.filter(f -> f.getPetals() > 10)
|
||||
.forEachOrdered(flowerVase::add);
|
||||
|
||||
assertEquals(flowerVase.size() + 1, flowers.size());
|
||||
assertFalse(flowerVase.containsAll(flowers));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenAList_whenListIsNotNull_thenAddElementsToListByStreamProcessWihtOptional() {
|
||||
List<Flower> target = new ArrayList<>();
|
||||
|
||||
Optional.ofNullable(flowers)
|
||||
.ifPresent(target::addAll);
|
||||
|
||||
assertNotNull(target);
|
||||
assertEquals(target.size(), 3);
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,41 @@
|
||||
package com.baeldung.nullsafecollectionstreams;
|
||||
|
||||
import java.util.Arrays;
|
||||
import java.util.Collection;
|
||||
import java.util.Iterator;
|
||||
import java.util.stream.Stream;
|
||||
import org.junit.Test;
|
||||
import static org.junit.Assert.*;
|
||||
|
||||
|
||||
public class NullSafeCollectionStreamsUsingCommonsEmptyIfNullUnitTest {
|
||||
|
||||
private final NullSafeCollectionStreamsUsingCommonsEmptyIfNull instance =
|
||||
new NullSafeCollectionStreamsUsingCommonsEmptyIfNull();
|
||||
|
||||
@Test
|
||||
public void whenCollectionIsNull_thenExpectAnEmptyStream() {
|
||||
Collection<String> collection = null;
|
||||
Stream<String> expResult = Stream.empty();
|
||||
Stream<String> result = instance.collectionAsStream(collection);
|
||||
assertStreamEquals(expResult, result);
|
||||
|
||||
}
|
||||
|
||||
@Test
|
||||
public void whenCollectionHasElements_thenExpectAStreamOfExactlyTheSameElements() {
|
||||
|
||||
Collection<String> collection = Arrays.asList("a", "b", "c");
|
||||
Stream<String> expResult = Arrays.stream(new String[] { "a", "b", "c" });
|
||||
Stream<String> result = instance.collectionAsStream(collection);
|
||||
assertStreamEquals(expResult, result);
|
||||
}
|
||||
|
||||
private static void assertStreamEquals(Stream<?> s1, Stream<?> s2) {
|
||||
Iterator<?> iter1 = s1.iterator(), iter2 = s2.iterator();
|
||||
while (iter1.hasNext() && iter2.hasNext())
|
||||
assertEquals(iter1.next(), iter2.next());
|
||||
assert !iter1.hasNext() && !iter2.hasNext();
|
||||
}
|
||||
|
||||
}
|
||||
@ -0,0 +1,53 @@
|
||||
/*
|
||||
* To change this license header, choose License Headers in Project Properties.
|
||||
* To change this template file, choose Tools | Templates
|
||||
* and open the template in the editor.
|
||||
*/
|
||||
package com.baeldung.nullsafecollectionstreams;
|
||||
|
||||
import java.util.Arrays;
|
||||
import java.util.Collection;
|
||||
import java.util.Iterator;
|
||||
import java.util.stream.Stream;
|
||||
import org.junit.After;
|
||||
import org.junit.AfterClass;
|
||||
import org.junit.Before;
|
||||
import org.junit.BeforeClass;
|
||||
import org.junit.Test;
|
||||
import static org.junit.Assert.*;
|
||||
|
||||
/**
|
||||
*
|
||||
* @author Kwaje Anthony <kwajeanthony@gmail.com>
|
||||
*/
|
||||
public class NullSafeCollectionStreamsUsingJava8OptionalContainerUnitTest {
|
||||
|
||||
private final NullSafeCollectionStreamsUsingJava8OptionalContainer instance =
|
||||
new NullSafeCollectionStreamsUsingJava8OptionalContainer();
|
||||
|
||||
@Test
|
||||
public void whenCollectionIsNull_thenExpectAnEmptyStream() {
|
||||
Collection<String> collection = null;
|
||||
Stream<String> expResult = Stream.empty();
|
||||
Stream<String> result = instance.collectionAsStream(collection);
|
||||
assertStreamEquals(expResult, result);
|
||||
|
||||
}
|
||||
|
||||
@Test
|
||||
public void whenCollectionHasElements_thenExpectAStreamOfExactlyTheSameElements() {
|
||||
|
||||
Collection<String> collection = Arrays.asList("a", "b", "c");
|
||||
Stream<String> expResult = Arrays.stream(new String[] { "a", "b", "c" });
|
||||
Stream<String> result = instance.collectionAsStream(collection);
|
||||
assertStreamEquals(expResult, result);
|
||||
}
|
||||
|
||||
private static void assertStreamEquals(Stream<?> s1, Stream<?> s2) {
|
||||
Iterator<?> iter1 = s1.iterator(), iter2 = s2.iterator();
|
||||
while (iter1.hasNext() && iter2.hasNext())
|
||||
assertEquals(iter1.next(), iter2.next());
|
||||
assert !iter1.hasNext() && !iter2.hasNext();
|
||||
}
|
||||
|
||||
}
|
||||
@ -0,0 +1,45 @@
|
||||
|
||||
package com.baeldung.nullsafecollectionstreams;
|
||||
|
||||
import java.util.Arrays;
|
||||
import java.util.Collection;
|
||||
import java.util.Iterator;
|
||||
import java.util.stream.Stream;
|
||||
import org.junit.Test;
|
||||
import static org.junit.Assert.*;
|
||||
|
||||
/**
|
||||
*
|
||||
* @author Kwaje Anthony <kwajeanthony@gmail.com>
|
||||
*/
|
||||
public class NullSafeCollectionStreamsUsingNullDereferenceCheckUnitTest {
|
||||
|
||||
private final NullSafeCollectionStreamsUsingNullDereferenceCheck instance =
|
||||
new NullSafeCollectionStreamsUsingNullDereferenceCheck();
|
||||
|
||||
@Test
|
||||
public void whenCollectionIsNull_thenExpectAnEmptyStream() {
|
||||
Collection<String> collection = null;
|
||||
Stream<String> expResult = Stream.empty();
|
||||
Stream<String> result = instance.collectionAsStream(collection);
|
||||
assertStreamEquals(expResult, result);
|
||||
|
||||
}
|
||||
|
||||
@Test
|
||||
public void whenCollectionHasElements_thenExpectAStreamOfExactlyTheSameElements() {
|
||||
|
||||
Collection<String> collection = Arrays.asList("a", "b", "c");
|
||||
Stream<String> expResult = Arrays.stream(new String[] { "a", "b", "c" });
|
||||
Stream<String> result = instance.collectionAsStream(collection);
|
||||
assertStreamEquals(expResult, result);
|
||||
}
|
||||
|
||||
private static void assertStreamEquals(Stream<?> s1, Stream<?> s2) {
|
||||
Iterator<?> iter1 = s1.iterator(), iter2 = s2.iterator();
|
||||
while (iter1.hasNext() && iter2.hasNext())
|
||||
assertEquals(iter1.next(), iter2.next());
|
||||
assert !iter1.hasNext() && !iter2.hasNext();
|
||||
}
|
||||
|
||||
}
|
||||
@ -19,11 +19,23 @@
|
||||
<version>${awaitility.version}</version>
|
||||
<scope>test</scope>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>org.assertj</groupId>
|
||||
<artifactId>assertj-core</artifactId>
|
||||
<version>${assertj.version}</version>
|
||||
<scope>test</scope>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>com.google.guava</groupId>
|
||||
<artifactId>guava</artifactId>
|
||||
<version>${guava.version}</version>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>org.junit.platform</groupId>
|
||||
<artifactId>junit-platform-runner</artifactId>
|
||||
<version>${junit.platform.version}</version>
|
||||
<scope>test</scope>
|
||||
</dependency>
|
||||
</dependencies>
|
||||
|
||||
<build>
|
||||
@ -50,6 +62,8 @@
|
||||
|
||||
<properties>
|
||||
<!-- testing -->
|
||||
<assertj.version>3.10.0</assertj.version>
|
||||
<junit.platform.version>1.2.0</junit.platform.version>
|
||||
<awaitility.version>1.7.0</awaitility.version>
|
||||
<maven.compiler.source>1.9</maven.compiler.source>
|
||||
<maven.compiler.target>1.9</maven.compiler.target>
|
||||
|
||||
@ -0,0 +1,27 @@
|
||||
package com.baeldung.java9.language.stream;
|
||||
|
||||
import static java.util.stream.Collectors.filtering;
|
||||
import static java.util.stream.Collectors.groupingBy;
|
||||
import static java.util.stream.Collectors.toList;
|
||||
|
||||
import java.util.Collection;
|
||||
import java.util.List;
|
||||
import java.util.Map;
|
||||
import java.util.function.Function;
|
||||
|
||||
public class StreamsGroupingCollectionFilter {
|
||||
|
||||
static public Map<Integer, List<Integer>> findEvenNumbersAfterGroupingByQuantityOfDigits(Collection<Integer> baseCollection) {
|
||||
Function<Integer, Integer> getQuantityOfDigits = item -> (int) Math.log10(item) + 1;
|
||||
|
||||
return baseCollection.stream()
|
||||
.collect(groupingBy(getQuantityOfDigits, filtering(item -> item % 2 == 0, toList())));
|
||||
}
|
||||
|
||||
static public Map<Integer, List<Integer>> findEvenNumbersBeforeGroupingByQuantityOfDigits(Collection<Integer> baseCollection) {
|
||||
|
||||
return baseCollection.stream()
|
||||
.filter(item -> item % 2 == 0)
|
||||
.collect(groupingBy(item -> (int) Math.log10(item) + 1, toList()));
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,33 @@
|
||||
package com.baeldung.java9.maps.initialize;
|
||||
|
||||
import java.util.AbstractMap;
|
||||
import java.util.HashMap;
|
||||
import java.util.Map;
|
||||
|
||||
public class MapsInitializer {
|
||||
|
||||
@SuppressWarnings("unused")
|
||||
public void createMapWithMapOf() {
|
||||
Map<String, String> emptyMap = Map.of();
|
||||
Map<String, String> singletonMap = Map.of("key1", "value");
|
||||
Map<String, String> map = Map.of("key1","value1", "key2", "value2");
|
||||
}
|
||||
|
||||
public void createMapWithMapEntries() {
|
||||
Map<String, String> map = Map.ofEntries(
|
||||
new AbstractMap.SimpleEntry<String, String>("name", "John"),
|
||||
new AbstractMap.SimpleEntry<String, String>("city", "budapest"),
|
||||
new AbstractMap.SimpleEntry<String, String>("zip", "000000"),
|
||||
new AbstractMap.SimpleEntry<String, String>("home", "1231231231")
|
||||
);
|
||||
}
|
||||
|
||||
@SuppressWarnings("unused")
|
||||
public void createMutableMaps() {
|
||||
Map<String, String> map = new HashMap<String, String> (Map.of("key1","value1", "key2", "value2"));
|
||||
Map<String, String> map2 = new HashMap<String, String> ( Map.ofEntries(
|
||||
new AbstractMap.SimpleEntry<String, String>("name", "John"),
|
||||
new AbstractMap.SimpleEntry<String, String>("city", "budapest")));
|
||||
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,51 @@
|
||||
package com.baeldung.java9.language.stream;
|
||||
|
||||
import static org.assertj.core.api.Assertions.assertThat;
|
||||
|
||||
import java.util.Arrays;
|
||||
import java.util.Collection;
|
||||
import java.util.Collections;
|
||||
import java.util.HashMap;
|
||||
import java.util.List;
|
||||
import java.util.Map;
|
||||
|
||||
import org.junit.jupiter.api.Test;
|
||||
import org.junit.platform.runner.JUnitPlatform;
|
||||
import org.junit.runner.RunWith;
|
||||
|
||||
@RunWith(JUnitPlatform.class)
|
||||
public class CollectionFilterUnitTest {
|
||||
|
||||
private static final Collection<Integer> BASE_INTEGER_COLLECTION = Arrays.asList(9, 12, 55, 56, 101, 115, 8002, 223, 2668, 19, 8);
|
||||
private static final Map<Integer, List<Integer>> EXPECTED_EVEN_FILTERED_AFTER_GROUPING_MAP = createExpectedFilterAfterGroupingMap();
|
||||
private static Map<Integer, List<Integer>> createExpectedFilterAfterGroupingMap() {
|
||||
Map<Integer, List<Integer>> map = new HashMap<>();
|
||||
map.put(1, Arrays.asList(8));
|
||||
map.put(2, Arrays.asList(12, 56));
|
||||
map.put(3, Collections.emptyList());
|
||||
map.put(4, Arrays.asList(8002, 2668));
|
||||
return map;
|
||||
|
||||
}
|
||||
|
||||
private static final Map<Integer, List<Integer>> EXPECTED_EVEN_FILTERED_BEFORE_GROUPING_MAP = createExpectedFilterBeforeGroupingMap();
|
||||
private static Map<Integer, List<Integer>> createExpectedFilterBeforeGroupingMap() {
|
||||
Map<Integer, List<Integer>> map = new HashMap<>();
|
||||
map.put(1, Arrays.asList(8));
|
||||
map.put(2, Arrays.asList(12, 56));
|
||||
map.put(4, Arrays.asList(8002, 2668));
|
||||
return map;
|
||||
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenAStringCollection_whenFilteringFourLetterWords_thenObtainTheFilteredCollection() {
|
||||
Map<Integer, List<Integer>> filteredAfterGroupingMap = StreamsGroupingCollectionFilter.findEvenNumbersAfterGroupingByQuantityOfDigits(BASE_INTEGER_COLLECTION);
|
||||
Map<Integer, List<Integer>> filteredBeforeGroupingMap = StreamsGroupingCollectionFilter.findEvenNumbersBeforeGroupingByQuantityOfDigits(BASE_INTEGER_COLLECTION);
|
||||
|
||||
assertThat(filteredAfterGroupingMap).containsAllEntriesOf(EXPECTED_EVEN_FILTERED_AFTER_GROUPING_MAP);
|
||||
assertThat(filteredBeforeGroupingMap).doesNotContainKey(3)
|
||||
.containsAllEntriesOf(EXPECTED_EVEN_FILTERED_BEFORE_GROUPING_MAP);
|
||||
}
|
||||
|
||||
}
|
||||
@ -30,3 +30,9 @@
|
||||
- [How to TDD a List Implementation in Java](http://www.baeldung.com/java-test-driven-list)
|
||||
- [How to Store Duplicate Keys in a Map in Java?](http://www.baeldung.com/java-map-duplicate-keys)
|
||||
- [Getting the Size of an Iterable in Java](http://www.baeldung.com/java-iterable-size)
|
||||
- [Iterating Backward Through a List](http://www.baeldung.com/java-list-iterate-backwards)
|
||||
- [How to Filter a Collection in Java](http://www.baeldung.com/java-collection-filtering)
|
||||
- [Add Multiple Items to an Java ArrayList](http://www.baeldung.com/java-add-items-array-list)
|
||||
- [Remove the First Element from a List](http://www.baeldung.com/java-remove-first-element-from-list)
|
||||
- [How to Convert List to Map in Java](http://www.baeldung.com/java-list-to-map)
|
||||
- [Initializing HashSet at the Time of Construction](http://www.baeldung.com/java-initialize-hashset)
|
||||
|
||||
@ -36,19 +36,44 @@
|
||||
<artifactId>commons-lang3</artifactId>
|
||||
<version>${commons-lang3.version}</version>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>org.eclipse.collections</groupId>
|
||||
<artifactId>eclipse-collections</artifactId>
|
||||
<version>${eclipse.collections.version}</version>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>org.assertj</groupId>
|
||||
<artifactId>assertj-core</artifactId>
|
||||
<version>${assertj.version}</version>
|
||||
<scope>test</scope>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>org.junit.platform</groupId>
|
||||
<artifactId>junit-platform-runner</artifactId>
|
||||
<version>${junit.platform.version}</version>
|
||||
<scope>test</scope>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>org.openjdk.jmh</groupId>
|
||||
<artifactId>jmh-core</artifactId>
|
||||
<version>${openjdk.jmh.version}</version>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>org.openjdk.jmh</groupId>
|
||||
<artifactId>jmh-generator-annprocess</artifactId>
|
||||
<version>${openjdk.jmh.version}</version>
|
||||
</dependency>
|
||||
</dependencies>
|
||||
|
||||
|
||||
<properties>
|
||||
<openjdk.jmh.version>1.19</openjdk.jmh.version>
|
||||
<junit.platform.version>1.2.0</junit.platform.version>
|
||||
<commons-lang3.version>3.5</commons-lang3.version>
|
||||
<commons-collections4.version>4.1</commons-collections4.version>
|
||||
<collections-generic.version>4.01</collections-generic.version>
|
||||
<avaitility.version>1.7.0</avaitility.version>
|
||||
<assertj.version>3.6.1</assertj.version>
|
||||
<eclipse.collections.version>7.1.0</eclipse.collections.version>
|
||||
</properties>
|
||||
</project>
|
||||
|
||||
@ -0,0 +1,16 @@
|
||||
package com.baeldung.java.filtering;
|
||||
|
||||
import java.util.Collection;
|
||||
|
||||
import org.apache.commons.collections4.CollectionUtils;
|
||||
import org.apache.commons.collections4.Predicate;
|
||||
|
||||
public class CollectionUtilsCollectionFilter {
|
||||
|
||||
static public Collection<Integer> findEvenNumbers(Collection<Integer> baseCollection) {
|
||||
Predicate<Integer> apacheEventNumberPredicate = item -> item % 2 == 0;
|
||||
|
||||
CollectionUtils.filter(baseCollection, apacheEventNumberPredicate);
|
||||
return baseCollection;
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,32 @@
|
||||
package com.baeldung.java.filtering;
|
||||
|
||||
import java.util.Collection;
|
||||
|
||||
import org.eclipse.collections.api.block.predicate.Predicate;
|
||||
import org.eclipse.collections.impl.factory.Lists;
|
||||
import org.eclipse.collections.impl.utility.Iterate;
|
||||
|
||||
public class EclipseCollectionsCollectionFilter {
|
||||
|
||||
static public Collection<Integer> findEvenNumbers(Collection<Integer> baseCollection) {
|
||||
Predicate<Integer> eclipsePredicate = item -> item % 2 == 0;
|
||||
Collection<Integer> filteredList = Lists.mutable.ofAll(baseCollection)
|
||||
.select(eclipsePredicate);
|
||||
|
||||
return filteredList;
|
||||
}
|
||||
|
||||
static public Collection<Integer> findEvenNumbersUsingIterate(Collection<Integer> baseCollection) {
|
||||
Predicate<Integer> eclipsePredicate = new Predicate<Integer>() {
|
||||
private static final long serialVersionUID = 1L;
|
||||
|
||||
@Override
|
||||
public boolean accept(Integer arg0) {
|
||||
return arg0 % 2 == 0;
|
||||
}
|
||||
};
|
||||
Collection<Integer> filteredList = Iterate.select(baseCollection, eclipsePredicate);
|
||||
|
||||
return filteredList;
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,17 @@
|
||||
package com.baeldung.java.filtering;
|
||||
|
||||
import java.util.Collection;
|
||||
|
||||
import com.google.common.base.Predicate;
|
||||
import com.google.common.collect.Collections2;
|
||||
|
||||
public class GuavaCollectionFilter {
|
||||
|
||||
static public Collection<Integer> findEvenNumbers(Collection<Integer> baseCollection) {
|
||||
Predicate<Integer> guavaPredicate = item -> item % 2 == 0;
|
||||
|
||||
Collection<Integer> filteredCollection = Collections2.filter(baseCollection, guavaPredicate);
|
||||
return filteredCollection;
|
||||
}
|
||||
|
||||
}
|
||||
@ -0,0 +1,26 @@
|
||||
package com.baeldung.java.filtering;
|
||||
|
||||
import java.util.Collection;
|
||||
import java.util.function.Predicate;
|
||||
import java.util.stream.Collectors;
|
||||
|
||||
public class StreamsCollectionFilter {
|
||||
|
||||
public static <T> Collection<T> filterCollectionHelperMethod(Collection<T> baseCollection, Predicate<T> predicate) {
|
||||
return baseCollection.stream()
|
||||
.filter(predicate)
|
||||
.collect(Collectors.toList());
|
||||
}
|
||||
|
||||
static public Collection<Integer> findEvenNumbersUsingHelperMethod(Collection<Integer> baseCollection) {
|
||||
return filterCollectionHelperMethod(baseCollection, item -> item % 2 == 0);
|
||||
}
|
||||
|
||||
static public Collection<Integer> findEvenNumbers(Collection<Integer> baseCollection) {
|
||||
Predicate<Integer> streamsPredicate = item -> item % 2 == 0;
|
||||
|
||||
return baseCollection.stream()
|
||||
.filter(streamsPredicate)
|
||||
.collect(Collectors.toList());
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,28 @@
|
||||
package com.baeldung.java.list;
|
||||
|
||||
public class Flower {
|
||||
|
||||
private String name;
|
||||
private int petals;
|
||||
|
||||
public Flower(String name, int petals) {
|
||||
this.name = name;
|
||||
this.petals = petals;
|
||||
}
|
||||
|
||||
public String getName() {
|
||||
return name;
|
||||
}
|
||||
|
||||
public void setName(String name) {
|
||||
this.name = name;
|
||||
}
|
||||
|
||||
public int getPetals() {
|
||||
return petals;
|
||||
}
|
||||
|
||||
public void setPetals(int petals) {
|
||||
this.petals = petals;
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,80 @@
|
||||
package com.baeldung.java.map.initialize;
|
||||
|
||||
import java.util.AbstractMap;
|
||||
import java.util.Collections;
|
||||
import java.util.HashMap;
|
||||
import java.util.Map;
|
||||
import java.util.stream.Collectors;
|
||||
import java.util.stream.Stream;
|
||||
|
||||
public class MapInitializer {
|
||||
|
||||
public static Map<String, String> articleMapOne;
|
||||
static {
|
||||
articleMapOne = new HashMap<>();
|
||||
articleMapOne.put("ar01", "Intro to Map");
|
||||
articleMapOne.put("ar02", "Some article");
|
||||
}
|
||||
|
||||
public static Map<String, String> createSingletonMap() {
|
||||
Map<String, String> passwordMap = Collections.singletonMap("username1", "password1");
|
||||
return passwordMap;
|
||||
|
||||
}
|
||||
|
||||
public Map<String, String> createEmptyMap() {
|
||||
Map<String, String> emptyMap = Collections.emptyMap();
|
||||
return emptyMap;
|
||||
}
|
||||
|
||||
public Map<String, String> createUsingDoubleBrace() {
|
||||
Map<String, String> doubleBraceMap = new HashMap<String, String>() {
|
||||
|
||||
/**
|
||||
*
|
||||
*/
|
||||
private static final long serialVersionUID = 1L;
|
||||
|
||||
{
|
||||
put("key1", "value1");
|
||||
put("key2", "value2");
|
||||
}
|
||||
};
|
||||
return doubleBraceMap;
|
||||
}
|
||||
|
||||
public Map<String, String> createMapUsingStreamStringArray() {
|
||||
Map<String, String> map = Stream.of(new String[][] { { "Hello", "World" }, { "John", "Doe" }, })
|
||||
.collect(Collectors.toMap(data -> data[0], data -> data[1]));
|
||||
|
||||
return map;
|
||||
}
|
||||
|
||||
public Map<String, Integer> createMapUsingStreamObjectArray() {
|
||||
Map<String, Integer> map = Stream.of(new Object[][] { { "data1", 1 }, { "data2", 2 }, })
|
||||
.collect(Collectors.toMap(data -> (String) data[0], data -> (Integer) data[1]));
|
||||
|
||||
return map;
|
||||
}
|
||||
|
||||
public Map<String, Integer> createMapUsingStreamSimpleEntry() {
|
||||
Map<String, Integer> map = Stream.of(new AbstractMap.SimpleEntry<>("idea", 1), new AbstractMap.SimpleEntry<>("mobile", 2))
|
||||
.collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));
|
||||
|
||||
return map;
|
||||
}
|
||||
|
||||
public Map<String, Integer> createMapUsingStreamSimpleImmutableEntry() {
|
||||
Map<String, Integer> map = Stream.of(new AbstractMap.SimpleImmutableEntry<>("idea", 1), new AbstractMap.SimpleImmutableEntry<>("mobile", 2))
|
||||
.collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));
|
||||
|
||||
return map;
|
||||
}
|
||||
|
||||
public Map<String, String> createImmutableMapWithStreams() {
|
||||
Map<String, String> map = Stream.of(new String[][] { { "Hello", "World" }, { "John", "Doe" }, })
|
||||
.collect(Collectors.collectingAndThen(Collectors.toMap(data -> data[0], data -> data[1]), Collections::<String, String> unmodifiableMap));
|
||||
return map;
|
||||
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,111 @@
|
||||
package com.baeldung.list.removeall;
|
||||
|
||||
import java.util.ArrayList;
|
||||
import java.util.Iterator;
|
||||
import java.util.List;
|
||||
import java.util.Objects;
|
||||
import java.util.stream.Collectors;
|
||||
|
||||
public class RemoveAll {
|
||||
|
||||
static void removeWithWhileLoopPrimitiveElement(List<Integer> list, int element) {
|
||||
while (list.contains(element)) {
|
||||
list.remove(element);
|
||||
}
|
||||
}
|
||||
|
||||
static void removeWithWhileLoopNonPrimitiveElement(List<Integer> list, Integer element) {
|
||||
while (list.contains(element)) {
|
||||
list.remove(element);
|
||||
}
|
||||
}
|
||||
|
||||
static void removeWithWhileLoopStoringFirstOccurrenceIndex(List<Integer> list, Integer element) {
|
||||
int index;
|
||||
while ((index = list.indexOf(element)) >= 0) {
|
||||
list.remove(index);
|
||||
}
|
||||
}
|
||||
|
||||
static void removeWithCallingRemoveUntilModifies(List<Integer> list, Integer element) {
|
||||
while (list.remove(element))
|
||||
;
|
||||
}
|
||||
|
||||
static void removeWithStandardForLoopUsingIndex(List<Integer> list, int element) {
|
||||
for (int i = 0; i < list.size(); i++) {
|
||||
if (Objects.equals(element, list.get(i))) {
|
||||
list.remove(i);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void removeWithForLoopDecrementOnRemove(List<Integer> list, int element) {
|
||||
for (int i = 0; i < list.size(); i++) {
|
||||
if (Objects.equals(element, list.get(i))) {
|
||||
list.remove(i);
|
||||
i--;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void removeWithForLoopIncrementIfRemains(List<Integer> list, int element) {
|
||||
for (int i = 0; i < list.size();) {
|
||||
if (Objects.equals(element, list.get(i))) {
|
||||
list.remove(i);
|
||||
} else {
|
||||
i++;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void removeWithForEachLoop(List<Integer> list, int element) {
|
||||
for (Integer number : list) {
|
||||
if (Objects.equals(number, element)) {
|
||||
list.remove(number);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void removeWithIterator(List<Integer> list, int element) {
|
||||
for (Iterator<Integer> i = list.iterator(); i.hasNext();) {
|
||||
Integer number = i.next();
|
||||
if (Objects.equals(number, element)) {
|
||||
i.remove();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static List<Integer> removeWithCollectingAndReturningRemainingElements(List<Integer> list, int element) {
|
||||
List<Integer> remainingElements = new ArrayList<>();
|
||||
for (Integer number : list) {
|
||||
if (!Objects.equals(number, element)) {
|
||||
remainingElements.add(number);
|
||||
}
|
||||
}
|
||||
return remainingElements;
|
||||
}
|
||||
|
||||
static void removeWithCollectingRemainingElementsAndAddingToOriginalList(List<Integer> list, int element) {
|
||||
List<Integer> remainingElements = new ArrayList<>();
|
||||
for (Integer number : list) {
|
||||
if (!Objects.equals(number, element)) {
|
||||
remainingElements.add(number);
|
||||
}
|
||||
}
|
||||
|
||||
list.clear();
|
||||
list.addAll(remainingElements);
|
||||
}
|
||||
|
||||
static List<Integer> removeWithStreamFilter(List<Integer> list, Integer element) {
|
||||
return list.stream()
|
||||
.filter(e -> !Objects.equals(e, element))
|
||||
.collect(Collectors.toList());
|
||||
}
|
||||
|
||||
static void removeWithRemoveIf(List<Integer> list, Integer element) {
|
||||
list.removeIf(n -> Objects.equals(n, element));
|
||||
}
|
||||
|
||||
}
|
||||
@ -0,0 +1,19 @@
|
||||
package com.baeldung.nullsafecollectionstreams;
|
||||
|
||||
import java.util.Collection;
|
||||
import java.util.stream.Stream;
|
||||
import static org.apache.commons.collections4.CollectionUtils.emptyIfNull;
|
||||
|
||||
public class NullSafeCollectionStreamsUsingCommonsEmptyIfNull {
|
||||
|
||||
/**
|
||||
* This method shows how to make a null safe stream from a collection through the use of
|
||||
* emptyIfNull() method from Apache Commons CollectionUtils library
|
||||
*
|
||||
* @param collection The collection that is to be converted into a stream
|
||||
* @return The stream that has been created from the collection or an empty stream if the collection is null
|
||||
*/
|
||||
public Stream<String> collectionAsStream(Collection<String> collection) {
|
||||
return emptyIfNull(collection).stream();
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,21 @@
|
||||
package com.baeldung.nullsafecollectionstreams;
|
||||
|
||||
import java.util.Collection;
|
||||
import java.util.Optional;
|
||||
import java.util.stream.Stream;
|
||||
|
||||
public class NullSafeCollectionStreamsUsingJava8OptionalContainer {
|
||||
|
||||
/**
|
||||
* This method shows how to make a null safe stream from a collection through the use of
|
||||
* Java SE 8’s Optional Container
|
||||
*
|
||||
* @param collection The collection that is to be converted into a stream
|
||||
* @return The stream that has been created from the collection or an empty stream if the collection is null
|
||||
*/
|
||||
public Stream<String> collectionAsStream(Collection<String> collection) {
|
||||
return Optional.ofNullable(collection)
|
||||
.map(Collection::stream)
|
||||
.orElseGet(Stream::empty);
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,19 @@
|
||||
package com.baeldung.nullsafecollectionstreams;
|
||||
|
||||
import java.util.Collection;
|
||||
import java.util.stream.Stream;
|
||||
|
||||
public class NullSafeCollectionStreamsUsingNullDereferenceCheck {
|
||||
|
||||
/**
|
||||
* This method shows how to make a null safe stream from a collection through the use of a check
|
||||
* to prevent null dereferences
|
||||
*
|
||||
* @param collection The collection that is to be converted into a stream
|
||||
* @return The stream that has been created from the collection or an empty stream if the collection is null
|
||||
*/
|
||||
public Stream<String> collectionAsStream(Collection<String> collection) {
|
||||
return collection == null ? Stream.empty() : collection.stream();
|
||||
}
|
||||
|
||||
}
|
||||
@ -0,0 +1,59 @@
|
||||
package com.baeldung.performance;
|
||||
|
||||
import org.openjdk.jmh.annotations.*;
|
||||
import org.openjdk.jmh.runner.Runner;
|
||||
import org.openjdk.jmh.runner.options.Options;
|
||||
import org.openjdk.jmh.runner.options.OptionsBuilder;
|
||||
|
||||
import java.util.ArrayList;
|
||||
import java.util.HashSet;
|
||||
import java.util.List;
|
||||
import java.util.Set;
|
||||
import java.util.concurrent.TimeUnit;
|
||||
|
||||
@BenchmarkMode(Mode.AverageTime)
|
||||
@OutputTimeUnit(TimeUnit.NANOSECONDS)
|
||||
@Warmup(iterations = 5)
|
||||
public class CollectionsBenchmark {
|
||||
|
||||
@State(Scope.Thread)
|
||||
public static class MyState {
|
||||
private Set<Employee> employeeSet = new HashSet<>();
|
||||
private List<Employee> employeeList = new ArrayList<>();
|
||||
|
||||
private long iterations = 10000;
|
||||
|
||||
private Employee employee = new Employee(100L, "Harry");
|
||||
|
||||
@Setup(Level.Trial)
|
||||
public void setUp() {
|
||||
|
||||
for (long i = 0; i < iterations; i++) {
|
||||
employeeSet.add(new Employee(i, "John"));
|
||||
employeeList.add(new Employee(i, "John"));
|
||||
}
|
||||
|
||||
employeeList.add(employee);
|
||||
employeeSet.add(employee);
|
||||
}
|
||||
}
|
||||
|
||||
@Benchmark
|
||||
public boolean testArrayList(MyState state) {
|
||||
return state.employeeList.contains(state.employee);
|
||||
}
|
||||
|
||||
@Benchmark
|
||||
public boolean testHashSet(MyState state) {
|
||||
return state.employeeSet.contains(state.employee);
|
||||
}
|
||||
|
||||
public static void main(String[] args) throws Exception {
|
||||
Options options = new OptionsBuilder()
|
||||
.include(CollectionsBenchmark.class.getSimpleName()).threads(1)
|
||||
.forks(1).shouldFailOnError(true)
|
||||
.shouldDoGC(true)
|
||||
.jvmArgs("-server").build();
|
||||
new Runner(options).run();
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,31 @@
|
||||
package com.baeldung.performance;
|
||||
|
||||
public class Employee {
|
||||
|
||||
private Long id;
|
||||
private String name;
|
||||
|
||||
public Employee(Long id, String name) {
|
||||
this.name = name;
|
||||
this.id = id;
|
||||
}
|
||||
|
||||
@Override
|
||||
public boolean equals(Object o) {
|
||||
if (this == o) return true;
|
||||
if (o == null || getClass() != o.getClass()) return false;
|
||||
|
||||
Employee employee = (Employee) o;
|
||||
|
||||
if (!id.equals(employee.id)) return false;
|
||||
return name.equals(employee.name);
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
public int hashCode() {
|
||||
int result = id.hashCode();
|
||||
result = 31 * result + name.hashCode();
|
||||
return result;
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,36 @@
|
||||
package com.baeldung.thread_safe_lifo;
|
||||
|
||||
import java.util.ArrayDeque;
|
||||
|
||||
/**
|
||||
* Deque Based Stack implementation.
|
||||
*/
|
||||
public class DequeBasedSynchronizedStack<T> {
|
||||
|
||||
// Internal Deque which gets decorated for synchronization.
|
||||
private ArrayDeque<T> dequeStore = new ArrayDeque<>();
|
||||
|
||||
public DequeBasedSynchronizedStack(int initialCapacity) {
|
||||
this.dequeStore = new ArrayDeque<>(initialCapacity);
|
||||
}
|
||||
|
||||
public DequeBasedSynchronizedStack() {
|
||||
|
||||
}
|
||||
|
||||
public synchronized T pop() {
|
||||
return this.dequeStore.pop();
|
||||
}
|
||||
|
||||
public synchronized void push(T element) {
|
||||
this.dequeStore.push(element);
|
||||
}
|
||||
|
||||
public synchronized T peek() {
|
||||
return this.dequeStore.peek();
|
||||
}
|
||||
|
||||
public synchronized int size() {
|
||||
return this.dequeStore.size();
|
||||
}
|
||||
}
|
||||
13
core-java-collections/src/main/resources/logback.xml
Normal file
13
core-java-collections/src/main/resources/logback.xml
Normal file
@ -0,0 +1,13 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<configuration>
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<encoder>
|
||||
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
|
||||
</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
</configuration>
|
||||
@ -0,0 +1,26 @@
|
||||
package com.baeldung.collection;
|
||||
|
||||
import java.util.List;
|
||||
import java.util.ArrayList;
|
||||
import java.util.Collections;
|
||||
import org.junit.Assert;
|
||||
import org.junit.Test;
|
||||
|
||||
public class CollectionsEmpty {
|
||||
|
||||
@Test
|
||||
public void givenArrayList_whenAddingElement_addsNewElement() {
|
||||
ArrayList<String> mutableList = new ArrayList<>();
|
||||
mutableList.add("test");
|
||||
|
||||
Assert.assertEquals(mutableList.size(), 1);
|
||||
Assert.assertEquals(mutableList.get(0), "test");
|
||||
}
|
||||
|
||||
@Test(expected = UnsupportedOperationException.class)
|
||||
public void givenCollectionsEmptyList_whenAddingElement_throwsUnsupportedOperationException() {
|
||||
List<String> immutableList = Collections.emptyList();
|
||||
immutableList.add("test");
|
||||
}
|
||||
|
||||
}
|
||||
Some files were not shown because too many files have changed in this diff Show More
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Reference in New Issue
Block a user