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- change to try-with-resources
- change the order of main method
This commit is contained in:
Alex Tighe 2019-08-05 22:53:17 -04:00
parent 88cd75e519
commit 65e0cdd9dd
3 changed files with 132 additions and 144 deletions
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6
core-java-modules/core-java-io2/README.md
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@ -1,6 +0,0 @@
=========
## Core Java IO Cookbooks and Examples
### Relevant Articles:
- [Reading Files Versus Loading Resources](http://www.baeldung.com/reading-files-versus-loading-resources)

246
core-java-modules/core-java-io2/pom.xml
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@ -1,143 +1,139 @@
<project xmlns="http://maven.apache.org/POM/4.0.0" <project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 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"> 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> <modelVersion>4.0.0</modelVersion>
<artifactId>core-java-io2</artifactId> <artifactId>core-java-io2</artifactId>
<version>0.1.0-SNAPSHOT</version> <version>0.1.0-SNAPSHOT</version>
<name>core-java-io2</name> <name>core-java-io2</name>
<packaging>jar</packaging> <packaging>jar</packaging>
<parent> <parent>
<groupId>com.baeldung</groupId> <groupId>com.baeldung</groupId>
<artifactId>parent-java</artifactId> <artifactId>parent-java</artifactId>
<version>0.0.1-SNAPSHOT</version> <version>0.0.1-SNAPSHOT</version>
<relativePath>../../parent-java</relativePath> <relativePath>../../parent-java</relativePath>
</parent> </parent>
<dependencies> <dependencies>
<dependency> <dependency>
<groupId>org.apache.commons</groupId> <groupId>org.apache.commons</groupId>
<artifactId>commons-collections4</artifactId> <artifactId>commons-collections4</artifactId>
<version>${commons-collections4.version}</version> <version>${commons-collections4.version}</version>
</dependency> </dependency>
<dependency> <dependency>
<groupId>commons-io</groupId> <groupId>commons-io</groupId>
<artifactId>commons-io</artifactId> <artifactId>commons-io</artifactId>
<version>2.6</version> <version>2.6</version>
</dependency> </dependency>
<dependency> <dependency>
<groupId>org.projectlombok</groupId> <groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId> <artifactId>lombok</artifactId>
<version>${lombok.version}</version> <version>${lombok.version}</version>
<scope>provided</scope> <scope>provided</scope>
</dependency> </dependency>
<dependency> <dependency>
<groupId>log4j</groupId> <groupId>log4j</groupId>
<artifactId>log4j</artifactId> <artifactId>log4j</artifactId>
<version>${log4j.version}</version> <version>${log4j.version}</version>
</dependency> </dependency>
<dependency> <!-- needed to bridge to slf4j for projects that use the log4j APIs directly --> <dependency> <!-- needed to bridge to slf4j for projects that use the log4j APIs directly -->
<groupId>org.slf4j</groupId> <groupId>org.slf4j</groupId>
<artifactId>log4j-over-slf4j</artifactId> <artifactId>log4j-over-slf4j</artifactId>
<version>${org.slf4j.version}</version> <version>${org.slf4j.version}</version>
</dependency> </dependency>
</dependencies> </dependencies>
<build>
<finalName>core-java-io2</finalName>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>${exec-maven-plugin.version}</version>
<configuration>
<executable>java</executable>
<mainClass>com.baeldung.outofmemoryerror.OutOfMemoryGCLimitExceed</mainClass>
<arguments>
<argument>-Xmx300m</argument>
<argument>-XX:+UseParallelGC</argument>
<argument>-classpath</argument>
<classpath />
<argument>com.baeldung.outofmemoryerror.OutOfMemoryGCLimitExceed</argument>
</arguments>
</configuration>
</plugin>
<plugin>
<!-- Build an executable JAR -->
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>${maven-jar-plugin.version}</version>
<configuration>
<archive>
<manifest>
<addClasspath>true</addClasspath>
<mainClass>com.baeldung.resource.MyResourceLoader</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
</plugins>
</build>
<profiles>
<profile>
<id>integration</id>
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<executions>
<execution>
<id>run-benchmarks</id>
<!-- <phase>integration-test</phase> -->
<phase>none</phase>
<goals>
<goal>exec</goal>
</goals>
<configuration>
<classpathScope>test</classpathScope>
<executable>java</executable>
<arguments>
<argument>-classpath</argument>
<classpath />
<argument>org.openjdk.jmh.Main</argument>
<argument>.*</argument>
</arguments>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>
</profiles>
<build> <properties>
<finalName>core-java-io2</finalName>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>${exec-maven-plugin.version}</version>
<configuration>
<executable>java</executable>
<mainClass>com.baeldung.outofmemoryerror.OutOfMemoryGCLimitExceed</mainClass>
<arguments>
<argument>-Xmx300m</argument>
<argument>-XX:+UseParallelGC</argument>
<argument>-classpath</argument>
<classpath />
<argument>com.baeldung.outofmemoryerror.OutOfMemoryGCLimitExceed</argument>
</arguments>
</configuration>
</plugin>
<plugin> <!-- util -->
<!-- Build an executable JAR --> <commons-collections4.version>4.1</commons-collections4.version>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>${maven-jar-plugin.version}</version>
<configuration>
<archive>
<manifest>
<addClasspath>true</addClasspath>
<mainClass>com.baeldung.resource.MyResourceLoader</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
</plugins>
</build>
<profiles> <!-- maven plugins -->
<profile> <maven-jar-plugin.version>3.1.0</maven-jar-plugin.version>
<id>integration</id>
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<executions> </properties>
<execution>
<id>run-benchmarks</id>
<!-- <phase>integration-test</phase> -->
<phase>none</phase>
<goals>
<goal>exec</goal>
</goals>
<configuration>
<classpathScope>test</classpathScope>
<executable>java</executable>
<arguments>
<argument>-classpath</argument>
<classpath />
<argument>org.openjdk.jmh.Main</argument>
<argument>.*</argument>
</arguments>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>
</profiles>
<properties>
<!-- util -->
<commons-collections4.version>4.1</commons-collections4.version>
<!-- maven plugins -->
<maven-jar-plugin.version>3.1.0</maven-jar-plugin.version>
</properties>
</project> </project>

24
core-java-modules/core-java-io2/src/main/java/com/baeldung/resource/MyResourceLoader.java
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@ -11,31 +11,29 @@ public class MyResourceLoader {
private void loadFileWithReader() throws IOException { private void loadFileWithReader() throws IOException {
FileReader fileReader = new FileReader("src/main/resources/input.txt"); try (FileReader fileReader = new FileReader("src/main/resources/input.txt"); BufferedReader reader = new BufferedReader(fileReader)) {
BufferedReader reader = new BufferedReader(fileReader); String contents = reader.lines()
String contents = reader.lines() .collect(Collectors.joining(System.lineSeparator()));
.collect(Collectors.joining(System.lineSeparator())); System.out.println(contents);
reader.close(); }
System.out.println(contents);
} }
private void loadFileAsResource() throws IOException { private void loadFileAsResource() throws IOException {
InputStream inputStream = getClass().getResourceAsStream("/input.txt"); try (InputStream inputStream = getClass().getResourceAsStream("/input.txt"); BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream))) {
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream)); String contents = reader.lines()
String contents = reader.lines() .collect(Collectors.joining(System.lineSeparator()));
.collect(Collectors.joining(System.lineSeparator())); System.out.println(contents);
System.out.println(contents); }
} }
public static void main(String[] args) throws IOException { public static void main(String[] args) throws IOException {
MyResourceLoader resourceLoader = new MyResourceLoader(); MyResourceLoader resourceLoader = new MyResourceLoader();
resourceLoader.loadFileWithReader();
resourceLoader.loadFileAsResource(); resourceLoader.loadFileAsResource();
resourceLoader.loadFileWithReader();
} }