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Merge branch 'eugenp:master' into master

This commit is contained in:
Bhabani Prasad Patel 2021-06-10 13:37:46 +05:30
parent 27fcf6d5e1 541faa3a97
commit 44932b2cbe
79 changed files with 1666 additions and 10 deletions
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1
aws-lambda/README.md
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@ -6,3 +6,4 @@ This module contains articles about AWS Lambda
- [Using AWS Lambda with API Gateway](https://www.baeldung.com/aws-lambda-api-gateway)
- [Introduction to AWS Serverless Application Model](https://www.baeldung.com/aws-serverless)
- [How to Implement Hibernate in an AWS Lambda Function in Java](https://www.baeldung.com/java-aws-lambda-hibernate)
- [Writing an Enterprise-Grade AWS Lambda in Java](https://www.baeldung.com/java-enterprise-aws-lambda)

10
core-java-modules/core-java-9/src/main/java/com/baeldung/java9/interfaces/CustomFoo.java Normal file
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@ -0,0 +1,10 @@
package com.baeldung.java9.interfaces;
public class CustomFoo implements Foo {
public static void main(String... args) {
Foo customFoo = new CustomFoo();
customFoo.bar(); // 'Hello world!'
Foo.buzz(); // 'Hello static world!'
}
}

22
core-java-modules/core-java-9/src/main/java/com/baeldung/java9/interfaces/Foo.java Normal file
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@ -0,0 +1,22 @@
package com.baeldung.java9.interfaces;
public interface Foo {
public default void bar() {
System.out.print("Hello");
baz();
}
public static void buzz() {
System.out.print("Hello");
staticBaz();
}
private void baz() {
System.out.print(" world!");
}
private static void staticBaz() {
System.out.print(" static world!");
}
}

38
core-java-modules/core-java-9/src/test/java/com/baeldung/java9/interfaces/CustomFooUnitTest.java Normal file
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@ -0,0 +1,38 @@
package com.baeldung.java9.interfaces;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import static org.assertj.core.api.Assertions.assertThat;
class CustomFooUnitTest {
private ByteArrayOutputStream outContent = new ByteArrayOutputStream();
private PrintStream originalOut = System.out;
@BeforeEach
void setup() {
System.setOut(new PrintStream(outContent));
}
@AfterEach
void tearDown() {
System.setOut(originalOut);
}
@Test
void givenACustomFooObject_whenCallingDefaultMethodBar_thenExpectedStringIsWrittenToSystemOut() {
CustomFoo customFoo = new CustomFoo();
customFoo.bar();
assertThat(outContent.toString()).isEqualTo("Hello world!");
}
@Test
void givenAFooInterface_whenCallingStaticMethodBuzz_thenExpectedStringIsWrittenToSystemOut() {
Foo.buzz();
assertThat(outContent.toString()).isEqualTo("Hello static world!");
}
}

1
core-java-modules/core-java-arrays-guides/README.md
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@ -8,3 +8,4 @@ This module contains complete guides about arrays in Java
- [What is \[Ljava.lang.Object;?](https://www.baeldung.com/java-tostring-array)
- [Guide to ArrayStoreException](https://www.baeldung.com/java-arraystoreexception)
- [Creating a Generic Array in Java](https://www.baeldung.com/java-generic-array)
- [Maximum Size of Java Arrays](https://www.baeldung.com/java-arrays-max-size)

1
core-java-modules/core-java-exceptions-3/README.md
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@ -8,3 +8,4 @@
- [Localizing Exception Messages in Java](https://www.baeldung.com/java-localize-exception-messages)
- [Explanation of ClassCastException in Java](https://www.baeldung.com/java-classcastexception)
- [NoSuchFieldError in Java](https://www.baeldung.com/java-nosuchfielderror)
- [IllegalAccessError in Java](https://www.baeldung.com/java-illegalaccesserror)

1
core-java-modules/core-java-networking-3/README.md
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@ -5,4 +5,5 @@ This module contains articles about networking in Java
### Relevant Articles
- [Finding a Free Port in Java](https://www.baeldung.com/java-free-port)
- [Downloading Email Attachments in Java](https://www.baeldung.com/java-download-email-attachments)
- [[<-- Prev]](/core-java-modules/core-java-networking-2)

1
core-java-modules/core-java-reflection-2/README.md
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@ -5,3 +5,4 @@
- [Checking If a Method is Static Using Reflection in Java](https://www.baeldung.com/java-check-method-is-static)
- [Checking if a Java Class is ‘abstract’ Using Reflection](https://www.baeldung.com/java-reflection-is-class-abstract)
- [Invoking a Private Method in Java](https://www.baeldung.com/java-call-private-method)
- [Finding All Classes in a Java Package](https://www.baeldung.com/java-find-all-classes-in-package)

2
core-java-modules/core-java-regex/README.md
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@ -13,3 +13,5 @@
- [Regular Expressions \s and \s+ in Java](https://www.baeldung.com/java-regex-s-splus)
- [Validate Phone Numbers With Java Regex](https://www.baeldung.com/java-regex-validate-phone-numbers)
- [How to Count the Number of Matches for a Regex?](https://www.baeldung.com/java-count-regex-matches)
- [Find All Numbers in a String in Java](https://www.baeldung.com/java-find-numbers-in-string)
- [Understanding the Pattern.quote Method](https://www.baeldung.com/java-pattern-quote)

6
core-java-modules/core-java-regex/src/test/java/com/baeldung/ignore/pattern/metacharacters/IgnoringPatternMetacharactersUnitTest.java
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@ -12,7 +12,7 @@ public class IgnoringPatternMetacharactersUnitTest {
private static final String patternStr = "$100.50";
@Test
public void givenPatternStringHasMetacharacters_whenPatternMatchedWithoutEscapingMetacharacters_thenNoMatchesFound() {
public void whenMetacharactersNotEscaped_thenNoMatchesFound() {
Pattern pattern = Pattern.compile(patternStr);
Matcher matcher = pattern.matcher(dollarAmounts);
@ -25,7 +25,7 @@ public class IgnoringPatternMetacharactersUnitTest {
}
@Test
public void givenPatternStringHasMetacharacters_whenPatternCompiledUsingManuallyMetaEscapedPattern_thenMatchingSuccessful() {
public void whenMetacharactersManuallyEscaped_thenMatchingSuccessful() {
String metaEscapedPatternStr = "\\Q" + patternStr + "\\E";
Pattern pattern = Pattern.compile(metaEscapedPatternStr);
Matcher matcher = pattern.matcher(dollarAmounts);
@ -39,7 +39,7 @@ public class IgnoringPatternMetacharactersUnitTest {
}
@Test
public void givenPatternStringHasMetacharacters_whenPatternCompiledUsingLiteralPatternFromQuote_thenMatchingSuccessful() {
public void whenMetacharactersEscapedUsingPatternQuote_thenMatchingSuccessful() {
String literalPatternStr = Pattern.quote(patternStr);
Pattern pattern = Pattern.compile(literalPatternStr);
Matcher matcher = pattern.matcher(dollarAmounts);

2
core-java-modules/core-java-security-3/README.md
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@ -4,5 +4,5 @@ This module contains articles about core Java Security
### Relevant Articles:
- [Secret Key and String Conversion in Java](https://www.baeldung.com/secret-key-and-string-conversion-in-java/)
- [Secret Key and String Conversion in Java](https://www.baeldung.com/java-secret-key-to-string)
- More articles: [[<-- prev]](/core-java-modules/core-java-security-2)

3
gradle/gradle-cucumber/README.md Normal file
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@ -0,0 +1,3 @@
### Relevant Articles:
- [Using Cucumber with Gradle](https://www.baeldung.com/java-cucumber-gradle)

54
gradle/gradle-jacoco/build.gradle Normal file
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@ -0,0 +1,54 @@
plugins {
id 'java'
id 'jacoco'
}
ext {
junitVersion = '5.7.2'
lombokVersion = '1.18.20'
}
group 'com.com.baeldung'
version '1.0-SNAPSHOT'
repositories {
mavenCentral()
}
java {
sourceCompatibility = JavaVersion.VERSION_11
targetCompatibility = JavaVersion.VERSION_11
}
dependencies {
testImplementation "org.junit.jupiter:junit-jupiter-api:${junitVersion}"
testRuntimeOnly "org.junit.jupiter:junit-jupiter-engine:${junitVersion}"
compileOnly "org.projectlombok:lombok:${lombokVersion}"
annotationProcessor "org.projectlombok:lombok:${lombokVersion}"
}
test {
useJUnitPlatform()
finalizedBy jacocoTestReport // report is always generated after tests run
}
jacocoTestReport {
dependsOn test // tests are required to run before generating the report
afterEvaluate {
classDirectories.setFrom(files(classDirectories.files.collect {
fileTree(dir: it, exclude: [
"com/baeldung/**/ExcludedPOJO.class",
"com/baeldung/**/*DTO.*",
"**/config/*"
])
}))
}
}
jacoco {
toolVersion = "0.8.6"
}

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gradle/gradle-jacoco/gradle/wrapper/gradle-wrapper.jar vendored Normal file
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gradle/gradle-jacoco/gradle/wrapper/gradle-wrapper.properties vendored Normal file
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@ -0,0 +1,5 @@
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-6.8-bin.zip
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists

185
gradle/gradle-jacoco/gradlew vendored Executable file
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@ -0,0 +1,185 @@
#!/usr/bin/env sh
#
# Copyright 2015 the original author or authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
##############################################################################
##
## Gradle start up script for UN*X
##
##############################################################################
# Attempt to set APP_HOME
# Resolve links: $0 may be a link
PRG="$0"
# Need this for relative symlinks.
while [ -h "$PRG" ] ; do
ls=`ls -ld "$PRG"`
link=`expr "$ls" : '.*-> \(.*\)$'`
if expr "$link" : '/.*' > /dev/null; then
PRG="$link"
else
PRG=`dirname "$PRG"`"/$link"
fi
done
SAVED="`pwd`"
cd "`dirname \"$PRG\"`/" >/dev/null
APP_HOME="`pwd -P`"
cd "$SAVED" >/dev/null
APP_NAME="Gradle"
APP_BASE_NAME=`basename "$0"`
# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
# Use the maximum available, or set MAX_FD != -1 to use that value.
MAX_FD="maximum"
warn () {
echo "$*"
}
die () {
echo
echo "$*"
echo
exit 1
}
# OS specific support (must be 'true' or 'false').
cygwin=false
msys=false
darwin=false
nonstop=false
case "`uname`" in
CYGWIN* )
cygwin=true
;;
Darwin* )
darwin=true
;;
MINGW* )
msys=true
;;
NONSTOP* )
nonstop=true
;;
esac
CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
# Determine the Java command to use to start the JVM.
if [ -n "$JAVA_HOME" ] ; then
if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
# IBM's JDK on AIX uses strange locations for the executables
JAVACMD="$JAVA_HOME/jre/sh/java"
else
JAVACMD="$JAVA_HOME/bin/java"
fi
if [ ! -x "$JAVACMD" ] ; then
die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
else
JAVACMD="java"
which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
# Increase the maximum file descriptors if we can.
if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
MAX_FD_LIMIT=`ulimit -H -n`
if [ $? -eq 0 ] ; then
if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
MAX_FD="$MAX_FD_LIMIT"
fi
ulimit -n $MAX_FD
if [ $? -ne 0 ] ; then
warn "Could not set maximum file descriptor limit: $MAX_FD"
fi
else
warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
fi
fi
# For Darwin, add options to specify how the application appears in the dock
if $darwin; then
GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
fi
# For Cygwin or MSYS, switch paths to Windows format before running java
if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
APP_HOME=`cygpath --path --mixed "$APP_HOME"`
CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
JAVACMD=`cygpath --unix "$JAVACMD"`
# We build the pattern for arguments to be converted via cygpath
ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
SEP=""
for dir in $ROOTDIRSRAW ; do
ROOTDIRS="$ROOTDIRS$SEP$dir"
SEP="|"
done
OURCYGPATTERN="(^($ROOTDIRS))"
# Add a user-defined pattern to the cygpath arguments
if [ "$GRADLE_CYGPATTERN" != "" ] ; then
OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
fi
# Now convert the arguments - kludge to limit ourselves to /bin/sh
i=0
for arg in "$@" ; do
CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
else
eval `echo args$i`="\"$arg\""
fi
i=`expr $i + 1`
done
case $i in
0) set -- ;;
1) set -- "$args0" ;;
2) set -- "$args0" "$args1" ;;
3) set -- "$args0" "$args1" "$args2" ;;
4) set -- "$args0" "$args1" "$args2" "$args3" ;;
5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
esac
fi
# Escape application args
save () {
for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
echo " "
}
APP_ARGS=`save "$@"`
# Collect all arguments for the java command, following the shell quoting and substitution rules
eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
exec "$JAVACMD" "$@"

89
gradle/gradle-jacoco/gradlew.bat vendored Normal file
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@ -0,0 +1,89 @@
@rem
@rem Copyright 2015 the original author or authors.
@rem
@rem Licensed under the Apache License, Version 2.0 (the "License");
@rem you may not use this file except in compliance with the License.
@rem You may obtain a copy of the License at
@rem
@rem https://www.apache.org/licenses/LICENSE-2.0
@rem
@rem Unless required by applicable law or agreed to in writing, software
@rem distributed under the License is distributed on an "AS IS" BASIS,
@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@rem See the License for the specific language governing permissions and
@rem limitations under the License.
@rem
@if "%DEBUG%" == "" @echo off
@rem ##########################################################################
@rem
@rem Gradle startup script for Windows
@rem
@rem ##########################################################################
@rem Set local scope for the variables with windows NT shell
if "%OS%"=="Windows_NT" setlocal
set DIRNAME=%~dp0
if "%DIRNAME%" == "" set DIRNAME=.
set APP_BASE_NAME=%~n0
set APP_HOME=%DIRNAME%
@rem Resolve any "." and ".." in APP_HOME to make it shorter.
for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
@rem Find java.exe
if defined JAVA_HOME goto findJavaFromJavaHome
set JAVA_EXE=java.exe
%JAVA_EXE% -version >NUL 2>&1
if "%ERRORLEVEL%" == "0" goto execute
echo.
echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
echo.
echo Please set the JAVA_HOME variable in your environment to match the
echo location of your Java installation.
goto fail
:findJavaFromJavaHome
set JAVA_HOME=%JAVA_HOME:"=%
set JAVA_EXE=%JAVA_HOME%/bin/java.exe
if exist "%JAVA_EXE%" goto execute
echo.
echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
echo.
echo Please set the JAVA_HOME variable in your environment to match the
echo location of your Java installation.
goto fail
:execute
@rem Setup the command line
set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
@rem Execute Gradle
"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
:end
@rem End local scope for the variables with windows NT shell
if "%ERRORLEVEL%"=="0" goto mainEnd
:fail
rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
rem the _cmd.exe /c_ return code!
if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
exit /b 1
:mainEnd
if "%OS%"=="Windows_NT" endlocal
:omega

1
gradle/gradle-jacoco/lombok.config Normal file
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@ -0,0 +1 @@
lombok.addLombokGeneratedAnnotation = true

1
gradle/gradle-jacoco/settings.gradle Normal file
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@ -0,0 +1 @@
rootProject.name = 'gradle-jacoco'

11
gradle/gradle-jacoco/src/main/java/com/baeldung/config/AppConfig.java Normal file
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@ -0,0 +1,11 @@
package com.baeldung.config;
import com.baeldung.service.ProductService;
public class AppConfig {
public ProductService productService() {
return new ProductService();
}
}

12
gradle/gradle-jacoco/src/main/java/com/baeldung/domain/Product.java Normal file
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@ -0,0 +1,12 @@
package com.baeldung.domain;
import lombok.Builder;
import lombok.Data;
@Builder
@Data
public class Product {
private int id;
private String name;
}

4
gradle/gradle-jacoco/src/main/java/com/baeldung/dto/ExcludedPOJO.java Normal file
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@ -0,0 +1,4 @@
package com.baeldung.dto;
public class ExcludedPOJO {
}

4
gradle/gradle-jacoco/src/main/java/com/baeldung/dto/ProductDTO.java Normal file
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@ -0,0 +1,4 @@
package com.baeldung.dto;
public class ProductDTO {
}

11
gradle/gradle-jacoco/src/main/java/com/baeldung/generated/Customer.java Normal file
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@ -0,0 +1,11 @@
package com.baeldung.generated;
@Generated
public class Customer {
// everything in this class will be excluded from jacoco report because of @Generated
@Override
public String toString() {
return "Customer{}";
}
}

15
gradle/gradle-jacoco/src/main/java/com/baeldung/generated/Generated.java Normal file
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@ -0,0 +1,15 @@
package com.baeldung.generated;
import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.ElementType.TYPE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
@Documented
@Retention(RUNTIME)
@Target({TYPE, METHOD})
public @interface Generated {
}

16
gradle/gradle-jacoco/src/main/java/com/baeldung/service/CustomerService.java Normal file
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@ -0,0 +1,16 @@
package com.baeldung.service;
import com.baeldung.generated.Generated;
public class CustomerService {
//this method will be excluded from coverage due to @Generated.
@Generated
public String getProductId() {
return "An ID";
}
public String getCustomerName() {
return "some name";
}
}

9
gradle/gradle-jacoco/src/main/java/com/baeldung/service/ProductService.java Normal file
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@ -0,0 +1,9 @@
package com.baeldung.service;
public class ProductService {
private static final double DISCOUNT = 0.25;
public double getSalePrice(double originalPrice) {
return originalPrice - originalPrice * DISCOUNT;
}
}

14
gradle/gradle-jacoco/src/test/java/com/baeldung/service/CustomerServiceUnitTest.java Normal file
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@ -0,0 +1,14 @@
package com.baeldung.service;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertNotNull;
class CustomerServiceUnitTest {
@Test
public void givenCustomer_whenGetCustomer_thenReturnNewCustomer() {
CustomerService customerService = new CustomerService();
assertNotNull(customerService.getCustomerName());
}
}

15
gradle/gradle-jacoco/src/test/java/com/baeldung/service/ProductServiceUnitTest.java Normal file
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@ -0,0 +1,15 @@
package com.baeldung.service;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;
class ProductServiceUnitTest {
@Test
public void givenOriginalPrice_whenGetSalePrice_thenReturnsDiscountedPrice() {
ProductService productService = new ProductService();
double salePrice = productService.getSalePrice(100);
assertEquals(salePrice, 75);
}
}

6
gradle/gradle-jacoco/src/test/resources/features/account_credited.feature Normal file
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@ -0,0 +1,6 @@
Feature: Account is credited with amount
Scenario: Credit amount
Given account balance is 0.0
When the account is credited with 10.0
Then account should have a balance of 10.0

6
java-collections-conversions-2/pom.xml
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@ -44,6 +44,12 @@
<version>${hamcrest.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>io.vavr</groupId>
<artifactId>vavr</artifactId>
<version>0.10.3</version>
</dependency>
</dependencies>
<build>

74
java-collections-conversions-2/src/test/java/com/baeldung/setiteration/SetIteration.java Normal file
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@ -0,0 +1,74 @@
package com.baeldung.setiteration;
import com.google.common.collect.Sets;
import io.vavr.collection.Stream;
import org.junit.jupiter.api.Test;
import java.util.Iterator;
import java.util.Set;
import java.util.stream.Collectors;
class SetIteration {
@Test
void givenSet_whenIteratorUsed_shouldIterateOverElements() {
// given
Set<String> names = Sets.newHashSet("Tom", "Jane", "Karen");
// when
Iterator<String> namesIterator1 = names.iterator();
Iterator<String> namesIterator2 = names.iterator();
// then
namesIterator1.forEachRemaining(System.out::println);
while(namesIterator2.hasNext()) {
System.out.println(namesIterator2.next());
}
}
@Test
void givenSet_whenStreamUsed_shouldIterateOverElements() {
// given
Set<String> names = Sets.newHashSet("Tom", "Jane", "Karen");
// when & then
String namesJoined = names.stream()
.map(String::toUpperCase)
.peek(System.out::println)
.collect(Collectors.joining());
}
@Test
void givenSet_whenEnhancedLoopUsed_shouldIterateOverElements() {
// given
Set<String> names = Sets.newHashSet("Tom", "Jane", "Karen");
// when & then
for (String name : names) {
System.out.println(name);
}
}
@Test
void givenSet_whenMappedToArray_shouldIterateOverElements() {
// given
Set<String> names = Sets.newHashSet("Tom", "Jane", "Karen");
// when & then
Object[] namesArray = names.toArray();
for (int i = 0; i < namesArray.length; i++) {
System.out.println(i + ": " + namesArray[i]);
}
}
@Test
void givenSet_whenZippedWithIndex_shouldIterateOverElements() {
// given
Set<String> names = Sets.newHashSet("Tom", "Jane", "Karen");
// when & then
Stream.ofAll(names)
.zipWithIndex()
.forEach(t -> System.out.println(t._2() + ": " + t._1()));
}
}

1
kubernetes/k8s-intro/README.md
View File

@ -17,3 +17,4 @@ If you get a valid response, then you're good to go.
- [Paging and Async Calls with the Kubernetes API](https://www.baeldung.com/java-kubernetes-paging-async)
- [Using Watch with the Kubernetes API](https://www.baeldung.com/java-kubernetes-watch)
- [Using Namespaces and Selectors With the Kubernetes Java API](https://www.baeldung.com/java-kubernetes-namespaces-selectors)
- [Creating, Updating and Deleting Resources with the Java Kubernetes API](https://www.baeldung.com/java-kubernetes-api-crud)

2
libraries-data-3/README.md
View File

@ -3,7 +3,7 @@
This module contains articles about libraries for data processing in Java.
### Relevant articles
- [Kafka Streams vs Kafka Consumer]()
- [Kafka Streams vs Kafka Consumer](https://www.baeldung.com/java-kafka-streams-vs-kafka-consumer)
- More articles: [[<-- prev]](/../libraries-data-2)
##### Building the project

1
logging-modules/log4j/README.md
View File

@ -3,3 +3,4 @@
- [Introduction to SLF4J](http://www.baeldung.com/slf4j-with-log4j2-logback)
- [A Guide to Rolling File Appenders](http://www.baeldung.com/java-logging-rolling-file-appenders)
- [Logging Exceptions Using SLF4J](https://www.baeldung.com/slf4j-log-exceptions)
- [Log4j Warning: "No Appenders Could Be Found for Logger"](https://www.baeldung.com/log4j-no-appenders-found)

18
logging-modules/log4j/src/main/java/com/baeldung/log4j/NoAppenderExample.java Normal file
View File

@ -0,0 +1,18 @@
package com.baeldung.log4j;
import org.apache.log4j.Logger;
public class NoAppenderExample {
private final static Logger logger = Logger.getLogger(NoAppenderExample.class);
public static void main(String[] args) {
//Setup default appender
//BasicConfigurator.configure();
//Define path to configuration file
//PropertyConfigurator.configure("src\\main\\resources\\log4j.properties");
logger.info("Info log message");
}
}

5
logging-modules/log4j/src/main/resources/log4j.properties Normal file
View File

@ -0,0 +1,5 @@
log4j.rootLogger=INFO, stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yy/MM/dd HH:mm:ss} %p %c{2}: %m%n

2
logging-modules/log4j/src/main/resources/log4j.xml
View File

@ -90,6 +90,8 @@
<appender-ref ref="roll-by-time-and-size"/>
</category>
<logger name="com.baeldung.log4j.NoAppenderExample"/>
<root>
<level value="DEBUG"/>
<appender-ref ref="stdout"/>

18
mapstruct/pom.xml
View File

@ -34,7 +34,12 @@
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${org.projectlombok.version}</version>
<version>${lombok.version}</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok-mapstruct-binding</artifactId>
<version>${lombok.mapstruct.binding.version}</version>
</dependency>
<dependency>
<groupId>org.assertj</groupId>
@ -63,7 +68,12 @@
<path>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${org.projectlombok.version}</version>
<version>${lombok.version}</version>
</path>
<path>
<groupId>org.projectlombok</groupId>
<artifactId>lombok-mapstruct-binding</artifactId>
<version>${lombok.mapstruct.binding.version}</version>
</path>
</annotationProcessorPaths>
</configuration>
@ -72,11 +82,11 @@
</build>
<properties>
<org.mapstruct.version>1.3.1.Final</org.mapstruct.version>
<org.mapstruct.version>1.4.2.Final</org.mapstruct.version>
<springframework.version>4.3.4.RELEASE</springframework.version>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<org.projectlombok.version>1.18.4</org.projectlombok.version>
<lombok.mapstruct.binding.version>0.2.0</lombok.mapstruct.binding.version>
<assertj.version>3.16.1</assertj.version>
</properties>

26
persistence-modules/core-java-persistence-2/src/main/java/com/baeldung/insertnull/DBConfig.java Normal file
View File

@ -0,0 +1,26 @@
package com.baeldung.insertnull;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
public class DBConfig {
private static Connection INSTANCE;
public static Connection getConnection() throws SQLException {
if (INSTANCE == null) {
INSTANCE = DriverManager.getConnection("jdbc:h2:mem:insertnull", "user", "password");
createPersonTable();
}
return INSTANCE;
}
private static void createPersonTable() throws SQLException {
try(Statement statement = INSTANCE.createStatement()) {
String sql = "CREATE TABLE Person (id INTEGER not null, name VARCHAR(50), lastName VARCHAR(50), age INTEGER, PRIMARY KEY (id))";
statement.executeUpdate(sql);
}
}
}

48
persistence-modules/core-java-persistence-2/src/main/java/com/baeldung/insertnull/Person.java Normal file
View File

@ -0,0 +1,48 @@
package com.baeldung.insertnull;
public class Person {
private Integer id;
private String name;
private String lastName;
private Integer age;
public Person(Integer id, String name, String lastName, Integer age) {
this.id = id;
this.name = name;
this.lastName = lastName;
this.age = age;
}
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 String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
}

50
persistence-modules/core-java-persistence-2/src/test/java/com/baeldung/insertnull/InsertNullUnitTest.java Normal file
View File

@ -0,0 +1,50 @@
package com.baeldung.insertnull;
import org.junit.jupiter.api.Test;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.sql.Types;
import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.MatcherAssert.assertThat;
public class InsertNullUnitTest {
private final String SQL = "INSERT INTO Person VALUES(?,?,?,?)";
@Test
public void givenNewPerson_whenSetNullIsUsed_thenNewRecordIsCreated() throws SQLException {
Person person = new Person(1, "John", "Doe", null);
try (PreparedStatement preparedStatement = DBConfig.getConnection().prepareStatement(SQL)) {
preparedStatement.setInt(1, person.getId());
preparedStatement.setString(2, person.getName());
preparedStatement.setString(3, person.getLastName());
if (person.getAge() == null) {
preparedStatement.setNull(4, Types.INTEGER);
}
else {
preparedStatement.setInt(4, person.getAge());
}
int noOfRows = preparedStatement.executeUpdate();
assertThat(noOfRows, equalTo(1));
}
}
@Test
public void givenNewPerson_whenSetObjectIsUsed_thenNewRecordIsCreated() throws SQLException {
Person person = new Person(2, "John", "Doe", null);
try (PreparedStatement preparedStatement = DBConfig.getConnection().prepareStatement(SQL)) {
preparedStatement.setInt(1, person.getId());
preparedStatement.setString(2, person.getName());
preparedStatement.setString(3, person.getLastName());
preparedStatement.setObject(4, person.getAge(), Types.INTEGER);
int noOfRows = preparedStatement.executeUpdate();
assertThat(noOfRows, equalTo(1));
}
}
}

2
persistence-modules/java-jpa-3/README.md
View File

@ -11,3 +11,5 @@ This module contains articles about the Java Persistence API (JPA) in Java.
- [A Guide to MultipleBagFetchException in Hibernate](https://www.baeldung.com/java-hibernate-multiplebagfetchexception)
- [How to Convert a Hibernate Proxy to a Real Entity Object](https://www.baeldung.com/hibernate-proxy-to-real-entity-object)
- [Returning an Auto-Generated Id with JPA](https://www.baeldung.com/jpa-get-auto-generated-id)
- [How to Return Multiple Entities In JPA Query](https://www.baeldung.com/jpa-return-multiple-entities)
- [Defining Unique Constraints in JPA](https://www.baeldung.com/jpa-unique-constraints)

37
persistence-modules/java-jpa-3/src/main/java/com/baeldung/jpa/uniqueconstraints/Address.java Normal file
View File

@ -0,0 +1,37 @@
package com.baeldung.jpa.uniqueconstraints;
import java.io.Serializable;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;
@Entity
@Table
public class Address implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue
private Long id;
private String streetAddress;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getStreetAddress() {
return streetAddress;
}
public void setStreetAddress(String streetAddress) {
this.streetAddress = streetAddress;
}
}

116
persistence-modules/java-jpa-3/src/main/java/com/baeldung/jpa/uniqueconstraints/Person.java Normal file
View File

@ -0,0 +1,116 @@
package com.baeldung.jpa.uniqueconstraints;
import java.io.Serializable;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.Table;
import javax.persistence.UniqueConstraint;
@Entity
@Table(uniqueConstraints = { @UniqueConstraint(name = "UniqueNumberAndStatus", columnNames = { "personNumber", "isActive" }),
@UniqueConstraint(name = "UniqueSecurityAndDepartment", columnNames = { "securityNumber", "departmentCode" }),
@UniqueConstraint(name = "UniqueNumberAndAddress", columnNames = { "personNumber", "address" }) })
public class Person implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue
private Long id;
private String name;
private String password;
@Column(unique = true)
private String email;
@Column(unique = true)
private Long personNumber;
private Boolean isActive;
private String securityNumber;
private String departmentCode;
@Column(unique = true)
@JoinColumn(name = "addressId", referencedColumnName = "id")
private Address address;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public Long getPersonNumber() {
return personNumber;
}
public void setPersonNumber(Long personNumber) {
this.personNumber = personNumber;
}
public Boolean getIsActive() {
return isActive;
}
public void setIsActive(Boolean isActive) {
this.isActive = isActive;
}
public String getScode() {
return securityNumber;
}
public void setScode(String scode) {
this.securityNumber = scode;
}
public String getDcode() {
return departmentCode;
}
public void setDcode(String dcode) {
this.departmentCode = dcode;
}
public Address getAddress() {
return address;
}
public void setAddress(Address address) {
this.address = address;
}
}

16
persistence-modules/java-jpa-3/src/main/resources/META-INF/persistence.xml
View File

@ -113,6 +113,22 @@
<property name="hibernate.temp.use_jdbc_metadata_defaults" value="false"/>
</properties>
</persistence-unit>
<persistence-unit name="jpa-unique-constraints">
<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
<class>com.baeldung.jpa.uniqueconstraints.Person</class>
<class>com.baeldung.jpa.uniqueconstraints.Address</class>
<exclude-unlisted-classes>true</exclude-unlisted-classes>
<properties>
<property name="javax.persistence.jdbc.driver" value="org.h2.Driver" />
<property name="javax.persistence.jdbc.url" value="jdbc:h2:mem:test" />
<property name="javax.persistence.jdbc.user" value="sa" />
<property name="javax.persistence.jdbc.password" value="" />
<property name="hibernate.dialect" value="org.hibernate.dialect.H2Dialect" />
<property name="hibernate.hbm2ddl.auto" value="create-drop" />
<property name="show_sql" value="true" />
<property name="hibernate.temp.use_jdbc_metadata_defaults" value="false" />
</properties>
</persistence-unit>
<persistence-unit name="jpa-h2-return-multiple-entities">
<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
<class>com.baeldung.jpa.returnmultipleentities.Channel</class>

119
persistence-modules/java-jpa-3/src/test/java/com/baeldung/jpa/uniqueconstraints/UniqueColumnIntegrationTest.java Normal file
View File

@ -0,0 +1,119 @@
package com.baeldung.jpa.uniqueconstraints;
import java.util.Optional;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;
import org.hibernate.exception.ConstraintViolationException;
import org.junit.Assert;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;
public class UniqueColumnIntegrationTest {
private static EntityManagerFactory factory;
private static EntityManager entityManager;
@BeforeAll
public static void setup() {
factory = Persistence.createEntityManagerFactory("jpa-unique-constraints");
entityManager = factory.createEntityManager();
}
@Test
public void whenPersistPersonWithSameNumber_thenConstraintViolationException() {
Person person1 = new Person();
person1.setPersonNumber(2000L);
person1.setEmail("john.beth@gmail.com");
Person person2 = new Person();
person2.setPersonNumber(2000L);
person2.setEmail("anthony.green@gmail.com");
entityManager.getTransaction().begin();
entityManager.persist(person1);
entityManager.getTransaction().commit();
entityManager.getTransaction().begin();
try {
entityManager.persist(person2);
entityManager.getTransaction().commit();
Assert.fail("Should raise an exception - unique key violation");
} catch (Exception ex) {
Assert.assertTrue(Optional.of(ex)
.map(Throwable::getCause)
.map(Throwable::getCause)
.filter(x -> x instanceof ConstraintViolationException)
.isPresent());
} finally {
entityManager.getTransaction().rollback();
}
}
@Test
public void whenPersistPersonWithSameEmail_thenConstraintViolationException() {
Person person1 = new Person();
person1.setPersonNumber(4000L);
person1.setEmail("timm.beth@gmail.com");
Person person2 = new Person();
person2.setPersonNumber(3000L);
person2.setEmail("timm.beth@gmail.com");
entityManager.getTransaction().begin();
entityManager.persist(person1);
entityManager.getTransaction().commit();
entityManager.getTransaction().begin();
try {
entityManager.persist(person2);
entityManager.getTransaction().commit();
Assert.fail("Should raise an exception - unique key violation");
} catch (Exception ex) {
Assert.assertTrue(Optional.of(ex)
.map(Throwable::getCause)
.map(Throwable::getCause)
.filter(x -> x instanceof ConstraintViolationException)
.isPresent());
} finally {
entityManager.getTransaction().rollback();
}
}
@Test
public void whenPersistPersonWithSameAddress_thenConstraintViolationException() {
Person person1 = new Person();
person1.setPersonNumber(5000L);
person1.setEmail("chris.beck@gmail.com");
Address address1 = new Address();
address1.setStreetAddress("20 Street");
person1.setAddress(address1);
Person person2 = new Person();
person2.setPersonNumber(6000L);
person2.setEmail("mark.jonson@gmail.com");
person2.setAddress(address1);
entityManager.getTransaction().begin();
entityManager.persist(person1);
entityManager.getTransaction().commit();
entityManager.getTransaction().begin();
try {
entityManager.persist(person2);
entityManager.getTransaction().commit();
Assert.fail("Should raise an exception - unique key violation");
} catch (Exception ex) {
Assert.assertTrue(Optional.of(ex)
.map(Throwable::getCause)
.map(Throwable::getCause)
.filter(x -> x instanceof ConstraintViolationException)
.isPresent());
} finally {
entityManager.getTransaction().rollback();
}
}
}

116
persistence-modules/java-jpa-3/src/test/java/com/baeldung/jpa/uniqueconstraints/UniqueConstraintIntegrationTest.java Normal file
View File

@ -0,0 +1,116 @@
package com.baeldung.jpa.uniqueconstraints;
import java.util.Optional;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;
import org.hibernate.exception.ConstraintViolationException;
import org.junit.Assert;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;
public class UniqueConstraintIntegrationTest {
private static EntityManagerFactory factory;
private static EntityManager entityManager;
@BeforeAll
public static void setup() {
factory = Persistence.createEntityManagerFactory("jpa-unique-constraints");
entityManager = factory.createEntityManager();
}
@Test
public void whenPersistPersonWithSameNumberAndStatus_thenConstraintViolationException() {
Person person1 = new Person();
person1.setPersonNumber(12345L);
person1.setIsActive(Boolean.TRUE);
Person person2 = new Person();
person2.setPersonNumber(12345L);
person2.setIsActive(Boolean.TRUE);
entityManager.getTransaction().begin();
entityManager.persist(person1);
entityManager.getTransaction().commit();
entityManager.getTransaction().begin();
try {
entityManager.persist(person2);
entityManager.getTransaction().commit();
Assert.fail("Should raise an exception - unique key violation");
} catch (Exception ex) {
Assert.assertTrue(Optional.of(ex)
.map(Throwable::getCause)
.map(Throwable::getCause)
.filter(x -> x instanceof ConstraintViolationException)
.isPresent());
} finally {
entityManager.getTransaction().rollback();
}
}
@Test
public void whenPersistPersonWithSameSCodeAndDecode_thenConstraintViolationException() {
Person person1 = new Person();
person1.setDcode("Sec1");
person1.setScode("Axybg356");
Person person2 = new Person();
person2.setDcode("Sec1");
person2.setScode("Axybg356");
entityManager.getTransaction().begin();
entityManager.persist(person1);
entityManager.getTransaction().commit();
entityManager.getTransaction().begin();
try {
entityManager.persist(person2);
entityManager.getTransaction().commit();
Assert.fail("Should raise an exception - unique key violation");
} catch (Exception ex) {
Assert.assertTrue(Optional.of(ex)
.map(Throwable::getCause)
.map(Throwable::getCause)
.filter(x -> x instanceof ConstraintViolationException)
.isPresent());
} finally {
entityManager.getTransaction().rollback();
}
}
@Test
public void whenPersistPersonWithSameNumberAndAddress_thenConstraintViolationException() {
Address address1 = new Address();
address1.setStreetAddress("40 Street");
Person person1 = new Person();
person1.setPersonNumber(54321L);
person1.setAddress(address1);
Person person2 = new Person();
person2.setPersonNumber(99999L);
person2.setAddress(address1);
entityManager.getTransaction().begin();
entityManager.persist(person1);
entityManager.getTransaction().commit();
entityManager.getTransaction().begin();
try {
entityManager.persist(person2);
entityManager.getTransaction().commit();
Assert.fail("Should raise an exception - unique key violation");
} catch (Exception ex) {
Assert.assertTrue(Optional.of(ex)
.map(Throwable::getCause)
.map(Throwable::getCause)
.filter(x -> x instanceof ConstraintViolationException)
.isPresent());
} finally {
entityManager.getTransaction().rollback();
}
}
}

1
reactor-core/README.md
View File

@ -9,3 +9,4 @@ This module contains articles about Reactor Core.
- [Programmatically Creating Sequences with Project Reactor](https://www.baeldung.com/flux-sequences-reactor)
- [How to Extract a Mono’s Content in Java](https://www.baeldung.com/java-string-from-mono)
- [How to Convert Mono<List<T\>> Into Flux<T\>](https://www.baeldung.com/java-mono-list-to-flux)
- [Project Reactor: map() vs flatMap()](https://www.baeldung.com/java-reactor-map-flatmap)

1
spring-boot-modules/pom.xml
View File

@ -73,6 +73,7 @@
<module>spring-boot-actuator</module>
<module>spring-boot-data-2</module>
<module>spring-boot-react</module>
<module>spring-boot-validation</module>
</modules>
<dependencyManagement>

1
spring-boot-modules/spring-boot-exceptions/README.md
View File

@ -5,3 +5,4 @@ This module contains articles about Spring Boot Exceptions
### Relevant Articles:
- [The BeanDefinitionOverrideException in Spring Boot](https://www.baeldung.com/spring-boot-bean-definition-override-exception)
- [Spring Boot Error ApplicationContextException](https://www.baeldung.com/spring-boot-application-context-exception)

8
spring-boot-modules/spring-boot-exceptions/pom.xml
View File

@ -15,6 +15,14 @@
<relativePath>../</relativePath>
</parent>
<!-- Added in order to produce ApplicationContextException error -->
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
</dependencies>
<build>
<finalName>spring-boot-exceptions</finalName>
<resources>

14
spring-boot-modules/spring-boot-exceptions/src/test/java/com/baeldung/applicationcontextexception/MainEntryPoint.java Normal file
View File

@ -0,0 +1,14 @@
package com.baeldung.applicationcontextexception;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
//Remove this annotation to produce ApplicationContextException error
@SpringBootApplication
public class MainEntryPoint {
public static void main(String[] args) {
SpringApplication.run(MainEntryPoint.class, args);
}
}

2
spring-boot-modules/spring-boot-keycloak/pom.xml
View File

@ -76,7 +76,7 @@
</build>
<properties>
<keycloak-adapter-bom.version>11.0.2</keycloak-adapter-bom.version>
<keycloak-adapter-bom.version>13.0.1</keycloak-adapter-bom.version>
</properties>
</project>

1
spring-boot-modules/spring-boot-testing/pom.xml
View File

@ -147,6 +147,7 @@
<spock.version>1.2-groovy-2.4</spock.version>
<gmavenplus-plugin.version>1.6</gmavenplus-plugin.version>
<redis.version>0.7.2</redis.version>
<spring-boot.version>2.5.0</spring-boot.version>
</properties>
</project>

63
spring-boot-modules/spring-boot-validation/.gitignore vendored Normal file
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@ -0,0 +1,63 @@
# Created by https://www.gitignore.io/api/eclipse
### Eclipse ###
.metadata
target/
bin/
tmp/
*.tmp
*.bak
*.swp
*~.nib
local.properties
.settings/
.loadpath
.recommenders
# External tool builders
.externalToolBuilders/
# Locally stored "Eclipse launch configurations"
*.launch
# PyDev specific (Python IDE for Eclipse)
*.pydevproject
# CDT-specific (C/C++ Development Tooling)
.cproject
# Java annotation processor (APT)
.factorypath
# PDT-specific (PHP Development Tools)
.buildpath
# sbteclipse plugin
.target
# Tern plugin
.tern-project
# TeXlipse plugin
.texlipse
# STS (Spring Tool Suite)
.springBeans
# Code Recommenders
.recommenders/
# Scala IDE specific (Scala & Java development for Eclipse)
.cache-main
.scala_dependencies
.worksheet
### Eclipse Patch ###
# Eclipse Core
.project
# JDT-specific (Eclipse Java Development Tools)
.classpath
# End of https://www.gitignore.io/api/eclipse

3
spring-boot-modules/spring-boot-validation/README.md Normal file
View File

@ -0,0 +1,3 @@
### Relevant Articles
- [Spring Validation in the Service Layer](https://www.baeldung.com/spring-service-layer-validation)

41
spring-boot-modules/spring-boot-validation/pom.xml Normal file
View File

@ -0,0 +1,41 @@
<?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>
<groupId>com.baeldung</groupId>
<artifactId>spring-boot-validation</artifactId>
<version>0.0.1-SNAPSHOT</version>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-boot-2</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../../parent-boot-2</relativePath>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.hibernate.validator</groupId>
<artifactId>hibernate-validator</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

13
spring-boot-modules/spring-boot-validation/src/main/java/com/baeldung/spring/servicevalidation/SpringServiceLayerValidationApp.java Normal file
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@ -0,0 +1,13 @@
package com.baeldung.spring.servicevalidation;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class SpringServiceLayerValidationApp {
public static void main(String[] args) {
SpringApplication.run(SpringServiceLayerValidationApp.class, args);
}
}

22
spring-boot-modules/spring-boot-validation/src/main/java/com/baeldung/spring/servicevalidation/controller/UserAccountController.java Normal file
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@ -0,0 +1,22 @@
package com.baeldung.spring.servicevalidation.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;
import com.baeldung.spring.servicevalidation.domain.UserAccount;
import com.baeldung.spring.servicevalidation.service.UserAccountService;
@RestController
public class UserAccountController {
@Autowired
private UserAccountService service;
@PostMapping("/addUserAccount")
public Object addUserAccount(@RequestBody UserAccount userAccount) {
return service.addUserAccount(userAccount);
}
}

31
spring-boot-modules/spring-boot-validation/src/main/java/com/baeldung/spring/servicevalidation/dao/UserAccountDao.java Normal file
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@ -0,0 +1,31 @@
package com.baeldung.spring.servicevalidation.dao;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import org.springframework.stereotype.Service;
import com.baeldung.spring.servicevalidation.domain.UserAccount;
@Service
public class UserAccountDao {
private Map<String, UserAccount> DB = new HashMap<String, UserAccount>();
public String addUserAccount(UserAccount useraccount) {
DB.put(useraccount.getName(), useraccount);
return "success";
}
public Collection<UserAccount> getAllUserAccounts() {
Collection<UserAccount> list = DB.values();
if (list.isEmpty()) {
list.addAll(DB.values());
}
return list;
}
}

77
spring-boot-modules/spring-boot-validation/src/main/java/com/baeldung/spring/servicevalidation/domain/UserAccount.java Normal file
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@ -0,0 +1,77 @@
package com.baeldung.spring.servicevalidation.domain;
import javax.validation.Valid;
import javax.validation.constraints.Min;
import javax.validation.constraints.NotBlank;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Size;
public class UserAccount {
@NotNull(message = "Password must be between 4 to 15 characters")
@Size(min = 4, max = 15)
private String password;
@NotBlank(message = "Name must not be blank")
private String name;
@Min(value = 18, message = "Age should not be less than 18")
private int age;
@NotBlank(message = "Phone must not be blank")
private String phone;
@Valid
@NotNull(message = "UserAddress must not be blank")
private UserAddress useraddress;
public UserAddress getUseraddress() {
return useraddress;
}
public void setUseraddress(UserAddress useraddress) {
this.useraddress = useraddress;
}
public UserAccount() {
}
public UserAccount(String email, String password, String name, int age) {
this.password = password;
this.name = name;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
}

18
spring-boot-modules/spring-boot-validation/src/main/java/com/baeldung/spring/servicevalidation/domain/UserAddress.java Normal file
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@ -0,0 +1,18 @@
package com.baeldung.spring.servicevalidation.domain;
import javax.validation.constraints.NotBlank;
public class UserAddress {
@NotBlank
private String countryCode;
public String getCountryCode() {
return countryCode;
}
public void setCountryCode(String countryCode) {
this.countryCode = countryCode;
}
}

42
spring-boot-modules/spring-boot-validation/src/main/java/com/baeldung/spring/servicevalidation/service/UserAccountService.java Normal file
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@ -0,0 +1,42 @@
package com.baeldung.spring.servicevalidation.service;
import java.util.Set;
import javax.validation.ConstraintViolation;
import javax.validation.ConstraintViolationException;
import javax.validation.Validator;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.baeldung.spring.servicevalidation.dao.UserAccountDao;
import com.baeldung.spring.servicevalidation.domain.UserAccount;
@Service
public class UserAccountService {
@Autowired
private Validator validator;
@Autowired
private UserAccountDao dao;
public String addUserAccount(UserAccount useraccount) {
Set<ConstraintViolation<UserAccount>> violations = validator.validate(useraccount);
if (!violations.isEmpty()) {
StringBuilder sb = new StringBuilder();
for (ConstraintViolation<UserAccount> constraintViolation : violations) {
sb.append(constraintViolation.getMessage());
}
dao.addUserAccount(useraccount);
throw new ConstraintViolationException("Error occurred: " + sb.toString(), violations);
}
return "Account for " + useraccount.getName() + " Added!";
}
}

14
spring-boot-modules/spring-boot-validation/src/test/java/com/baeldung/SpringContextTest.java Normal file
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@ -0,0 +1,14 @@
package com.baeldung;
import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;
import com.baeldung.spring.servicevalidation.SpringServiceLayerValidationApp;
@SpringBootTest(classes = SpringServiceLayerValidationApp.class)
public class SpringContextTest {
@Test
public void whenSpringContextIsBootstrapped_thenNoExceptions() {
}
}

1
spring-cloud/spring-cloud-openfeign/README.md
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@ -3,3 +3,4 @@
- [Introduction to Spring Cloud OpenFeign](https://www.baeldung.com/spring-cloud-openfeign)
- [Differences Between Netflix Feign and OpenFeign](https://www.baeldung.com/netflix-feign-vs-openfeign)
- [File Upload With Open Feign](https://www.baeldung.com/java-feign-file-upload)
- [Feign Logging Configuration](https://www.baeldung.com/java-feign-logging)

1
testing-modules/testing-libraries-2/README.md
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@ -3,3 +3,4 @@
- [Guide to the System Rules Library](https://www.baeldung.com/java-system-rules-junit)
- [Guide to the System Stubs Library](https://www.baeldung.com/java-system-stubs)
- [Code Coverage with SonarQube and JaCoCo](https://www.baeldung.com/sonarqube-jacoco-code-coverage)
- [Exclusions from Jacoco Report](https://www.baeldung.com/jacoco-report-exclude)

1
testing-modules/testing-libraries-2/lombok.config Normal file
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@ -0,0 +1 @@
lombok.addLombokGeneratedAnnotation = true

13
testing-modules/testing-libraries-2/pom.xml
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@ -13,6 +13,12 @@
</parent>
<dependencies>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${lombok.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
@ -85,6 +91,13 @@
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<version>${jacoco.version}</version>
<configuration>
<excludes>
<exclude>com/baeldung/**/ExcludedPOJO.class</exclude>
<exclude>com/baeldung/**/*DTO.*</exclude>
<exclude>**/config/*</exclude>
</excludes>
</configuration>
<executions>
<execution>
<id>jacoco-initialize</id>

11
testing-modules/testing-libraries-2/src/main/java/com/baeldung/jacocoexclusions/config/AppConfig.java Normal file
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@ -0,0 +1,11 @@
package com.baeldung.jacocoexclusions.config;
import com.baeldung.jacocoexclusions.service.ProductService;
public class AppConfig {
public ProductService productService() {
return new ProductService();
}
}

12
testing-modules/testing-libraries-2/src/main/java/com/baeldung/jacocoexclusions/domain/Product.java Normal file
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@ -0,0 +1,12 @@
package com.baeldung.jacocoexclusions.domain;
import lombok.Builder;
import lombok.Data;
@Builder
@Data
public class Product {
private int id;
private String name;
}

4
testing-modules/testing-libraries-2/src/main/java/com/baeldung/jacocoexclusions/dto/ExcludedPOJO.java Normal file
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@ -0,0 +1,4 @@
package com.baeldung.jacocoexclusions.dto;
public class ExcludedPOJO {
}

4
testing-modules/testing-libraries-2/src/main/java/com/baeldung/jacocoexclusions/dto/ProductDTO.java Normal file
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@ -0,0 +1,4 @@
package com.baeldung.jacocoexclusions.dto;
public class ProductDTO {
}

11
testing-modules/testing-libraries-2/src/main/java/com/baeldung/jacocoexclusions/generated/Customer.java Normal file
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@ -0,0 +1,11 @@
package com.baeldung.jacocoexclusions.generated;
@Generated
public class Customer {
// everything in this class will be excluded from jacoco report because of @Generated
@Override
public String toString() {
return "Customer{}";
}
}

15
testing-modules/testing-libraries-2/src/main/java/com/baeldung/jacocoexclusions/generated/Generated.java Normal file
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@ -0,0 +1,15 @@
package com.baeldung.jacocoexclusions.generated;
import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.ElementType.TYPE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
@Documented
@Retention(RUNTIME)
@Target({TYPE, METHOD})
public @interface Generated {
}

16
testing-modules/testing-libraries-2/src/main/java/com/baeldung/jacocoexclusions/service/CustomerService.java Normal file
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@ -0,0 +1,16 @@
package com.baeldung.jacocoexclusions.service;
import com.baeldung.jacocoexclusions.generated.Generated;
public class CustomerService {
//this method will be excluded from coverage due to @Generated.
@Generated
public String getProductId() {
return "An ID";
}
public String getCustomerName() {
return "some name";
}
}

9
testing-modules/testing-libraries-2/src/main/java/com/baeldung/jacocoexclusions/service/ProductService.java Normal file
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@ -0,0 +1,9 @@
package com.baeldung.jacocoexclusions.service;
public class ProductService {
private static final double DISCOUNT = 0.25;
public double getSalePrice(double originalPrice) {
return originalPrice - originalPrice * DISCOUNT;
}
}

14
testing-modules/testing-libraries-2/src/test/java/com/baeldung/jacocoexclusions/service/CustomerServiceUnitTest.java Normal file
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@ -0,0 +1,14 @@
package com.baeldung.jacocoexclusions.service;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertNotNull;
class CustomerServiceUnitTest {
@Test
public void givenCustomer_whenGetCustomer_thenReturnNewCustomer() {
CustomerService customerService = new CustomerService();
assertNotNull(customerService.getCustomerName());
}
}

15
testing-modules/testing-libraries-2/src/test/java/com/baeldung/jacocoexclusions/service/ProductServiceUnitTest.java Normal file
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@ -0,0 +1,15 @@
package com.baeldung.jacocoexclusions.service;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;
class ProductServiceUnitTest {
@Test
public void givenOriginalPrice_whenGetSalePrice_thenReturnsDiscountedPrice() {
ProductService productService = new ProductService();
double salePrice = productService.getSalePrice(100);
assertEquals(salePrice, 75);
}
}