Merge branch 'master' of https://github.com/JonCook/tutorials

gradle/.gitignore

@@ -0,0 +1 @@
+/.gradle/

gradle/.travis.yml

@@ -0,0 +1,27 @@
+# More details on how to configure the Travis build
+# https://docs.travis-ci.com/user/customizing-the-build/
+
+# Speed up build with travis caches
+cache:
+  directories:
+    - $HOME/.gradle/caches/
+    - $HOME/.gradle/wrapper/
+
+language: java
+
+jdk:
+  - oraclejdk8
+
+#Skipping install step to avoid having Travis run arbitrary './gradlew assemble' task
+# https://docs.travis-ci.com/user/customizing-the-build/#Skipping-the-Installation-Step
+install:
+  - true
+
+#Don't build tags
+branches:
+  except:
+  - /^v\d/
+
+#Build and perform release (if needed)
+script:
+  - ./gradlew build -s && ./gradlew ciPerformRelease

gradle/README.md

@@ -0,0 +1,10 @@
+## Gradle
+
+This module contains articles about Gradle
+
+## Relevant articles:
+- [Introduction to Gradle](https://www.baeldung.com/gradle)
+- [Writing Custom Gradle Plugins](https://www.baeldung.com/gradle-create-plugin)
+- [Creating a Fat Jar in Gradle](https://www.baeldung.com/gradle-fat-jar)
+- [A Custom Task in Gradle](https://www.baeldung.com/gradle-custom-task)
+- [Using JUnit 5 with Gradle](https://www.baeldung.com/junit-5-gradle)

gradle/build.gradle

@@ -0,0 +1,92 @@
+allprojects {
+    repositories {
+        jcenter() 
+    }
+}
+
+
+subprojects {
+
+    version = '1.0'
+}
+
+apply plugin: 'eclipse'
+
+println 'This will be executed during the configuration phase.'
+
+task configured {
+    println 'This will also be executed during the configuration phase.'
+}
+
+task execFirstTest {
+    doLast {
+        println 'This will be executed during the execution phase.'
+    }
+}
+
+task execSecondTest {
+    doFirst {
+      println 'This will be executed first during the execution phase.'
+    }
+    doLast {
+      println 'This will be executed last during the execution phase.'
+    }
+    println 'This will be executed during the configuration phase as well.'
+}
+
+task welcome {
+    doLast {
+        println 'Welcome on the Baeldung!'
+    }
+}
+
+task welcomeWithGroup {
+    group 'Sample category'
+    doLast {
+        println 'Welcome on the Baeldung!'
+    }
+}
+
+task welcomeWithGroupAndDescription {
+    group 'Sample category'
+    description 'Tasks which shows welcome message'
+    doLast {
+        println 'Welcome on the Baeldung!'
+    }
+}
+
+class PrintToolVersionTask extends DefaultTask {
+    String tool
+
+    @TaskAction
+    void printToolVersion() {
+        switch (tool) {
+            case 'java':
+                println System.getProperty("java.version")
+                break
+            case 'groovy':
+                println GroovySystem.version
+                break
+            default:
+                throw new IllegalArgumentException("Unknown tool")
+        }
+    }
+}
+
+task printJavaVersion(type : PrintToolVersionTask) {
+    tool 'java'
+}
+
+task printGroovyVersion(type : PrintToolVersionTask) {
+    tool 'groovy'
+}
+
+import com.baeldung.PrintToolVersionBuildSrcTask
+
+task printJavaVersionBuildSrc(type : PrintToolVersionBuildSrcTask) {
+    tool 'java'
+}
+
+task printGroovyVersionBuildSrc(type : PrintToolVersionBuildSrcTask) {
+    tool 'groovy'
+}

gradle/buildSrc/src/main/groovy/com/baeldung/PrintToolVersionBuildSrcTask.groovy

@@ -0,0 +1,22 @@
+package com.baeldung
+
+import org.gradle.api.DefaultTask
+import org.gradle.api.tasks.TaskAction
+
+class PrintToolVersionBuildSrcTask extends DefaultTask {
+    String tool
+
+    @TaskAction
+    void printToolVersion() {
+        switch (tool) {
+            case 'java':
+                println System.getProperty("java.version")
+                break
+            case 'groovy':
+                println GroovySystem.version
+                break
+            default:
+                throw new IllegalArgumentException("Unknown tool")
+        }
+    }
+}

gradle/gradle-fat-jar/build.gradle

@@ -0,0 +1,41 @@
+buildscript {
+    repositories {
+        jcenter()
+    }
+    dependencies {
+        classpath 'com.github.jengelman.gradle.plugins:shadow:2.0.1'
+    }
+}
+
+apply plugin: 'java'
+apply plugin: 'com.github.johnrengelman.shadow'
+
+repositories {
+    mavenCentral()
+}
+
+jar {
+    manifest {
+        attributes "Main-Class": "com.baeldung.fatjar.Application"
+    }
+
+    from {
+        configurations.compile.collect { it.isDirectory() ? it : zipTree(it) }
+    }
+}
+
+
+task customFatJar(type: Jar) {
+    manifest {
+        attributes 'Main-Class': 'com.baeldung.fatjar.Application'
+    }
+    baseName = 'all-in-one-jar'
+    from { configurations.compile.collect { it.isDirectory() ? it : zipTree(it) } }
+    with jar
+}
+
+
+dependencies{
+    compile group: 'org.slf4j', name: 'slf4j-api', version: '1.7.25'
+    compile group: 'org.slf4j', name: 'slf4j-simple', version: '1.7.25'
+}

gradle/gradle-fat-jar/src/main/java/com/baeldung/fatjar/Application.java

@@ -0,0 +1,16 @@
+package com.baeldung.fatjar;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+
+public class Application {
+
+    static final Logger logger = LoggerFactory.getLogger(Application.class);
+
+    public static void main(String[] args) {
+
+       logger.info("Hello at Baeldung!");
+    }
+
+}

gradle/gradle/shipkit.gradle

@@ -0,0 +1,41 @@
+//This default Shipkit configuration file was created automatically and is intended to be checked-in.
+//Default configuration is sufficient for local testing and trying out Shipkit.
+//To leverage Shipkit fully, please fix the TODO items, refer to our Getting Started Guide for help:
+//
+//     https://github.com/mockito/shipkit/blob/master/docs/getting-started.md
+//
+shipkit {
+   //TODO is the repository correct?
+   gitHub.repository = "unspecified-user/unspecified-repo"
+
+   //TODO generate and use your own read-only GitHub personal access token
+   gitHub.readOnlyAuthToken = "76826c9ec886612f504d12fd4268b16721c4f85d"
+
+   //TODO generate GitHub write token, and ensure your Travis CI has this env variable exported
+   gitHub.writeAuthToken = System.getenv("GH_WRITE_TOKEN")
+}
+
+allprojects {
+   plugins.withId("com.jfrog.bintray") {
+
+       //Bintray configuration is handled by JFrog Bintray Gradle Plugin
+       //For reference see the official documentation: https://github.com/bintray/gradle-bintray-plugin
+       bintray {
+
+           //TODO sign up for free open source account with https://bintray.com, then look up your API key on your profile page in Bintray
+           key = '7ea297848ca948adb7d3ee92a83292112d7ae989'
+           //TODO don't check in the key, remove above line and use env variable exported on CI:
+           //key = System.getenv("BINTRAY_API_KEY")
+
+           pkg {
+               //TODO configure Bintray settings per your project (https://github.com/bintray/gradle-bintray-plugin)
+               repo = 'bootstrap'
+               user = 'shipkit-bootstrap-bot'
+               userOrg = 'shipkit-bootstrap'
+               name = 'maven'
+               licenses = ['MIT']
+               labels = ['continuous delivery', 'release automation', 'shipkit']
+           }
+       }
+   }
+}

gradle/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Thu Oct 12 16:43:02 BDT 2017
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.2.1-bin.zip

gradle/gradletaskdemo/aplugin.gradle

@@ -0,0 +1,5 @@
+task fromPlugin {
+    doLast {
+        println "I'm from plugin"
+    }
+}

gradle/gradletaskdemo/build.gradle

@@ -0,0 +1,110 @@
+buildscript {
+    repositories {
+        maven {
+            url "https://plugins.gradle.org/m2/"
+        }
+    }
+    dependencies {
+        classpath "org.shipkit:shipkit:0.9.117"
+    }
+}
+
+
+plugins {
+    id 'java'
+}
+
+
+apply from: 'aplugin.gradle'
+apply plugin: 'org.shipkit.bintray-release'
+
+
+//hello task
+task hello {
+    doLast {
+        println 'Baeldung'
+    }
+}
+
+//Groovy in gradle task
+task toLower {
+    doLast {
+        String someString = 'HELLO FROM BAELDUNG'
+        println "Original: " + someString
+        println "Lower case: " + someString.toLowerCase()
+    }
+}
+
+
+// Task dependencies
+task helloGradle {
+    doLast {
+        println 'Hello Gradle!'
+    }
+}
+
+task fromBaeldung(dependsOn: helloGradle) {
+    doLast {
+        println "I'm from Baeldung"
+    }
+}
+
+
+//Adding behavior to a task via api
+task helloBaeldung {
+    doLast {
+        println 'I will be executed second'
+    }
+}
+
+helloBaeldung.doFirst {
+    println 'I will be executed first'
+}
+
+helloBaeldung.doLast {
+    println 'I will be executed third'
+}
+
+helloBaeldung {
+    doLast {
+        println 'I will be executed fourth'
+    }
+}
+
+
+
+
+//Adding extra task properties
+task ourTask {
+    ext.theProperty = "theValue"
+}
+
+task printTaskProperty {
+    doLast {
+        println ourTask.theProperty
+    }
+}
+
+
+
+//Declaring dependencies
+dependencies {
+    compile group: 
+      'org.springframework', name: 'spring-core', version: '4.3.5.RELEASE'
+    compile 'org.springframework:spring-core:4.3.5.RELEASE',
+            'org.springframework:spring-aop:4.3.5.RELEASE'
+    compile(
+        [group: 'org.springframework', name: 'spring-core', version: '4.3.5.RELEASE'],
+        [group: 'org.springframework', name: 'spring-aop', version: '4.3.5.RELEASE']
+    )
+    testCompile('org.hibernate:hibernate-core:5.2.12.Final') {
+        transitive = true
+    }
+    runtime(group: 'org.hibernate', name: 'hibernate-core', version: '5.2.12.Final') {
+        transitive = false
+    }
+	runtime "org.codehaus.groovy:groovy-all:2.4.11@jar"
+    runtime group: 'org.codehaus.groovy', name: 'groovy-all', version: '2.4.11', ext: 'jar'
+    
+    compile fileTree(dir: 'libs', include: '*.jar')	
+}

gradle/gradletaskdemo/build/tmp/jar/MANIFEST.MF

@@ -0,0 +1,2 @@
+Manifest-Version: 1.0
+

gradle/gradlew

@@ -0,0 +1,164 @@
+#!/usr/bin/env bash
+
+##############################################################################
+##
+##  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 "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn ( ) {
+    echo "$*"
+}
+
+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, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$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`="\"$arg\""
+        fi
+        i=$((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
+
+# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
+function splitJvmOpts() {
+    JVM_OPTS=("$@")
+}
+eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
+JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+
+exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"

gradle/gradlew.bat

@@ -0,0 +1,90 @@
+@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 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=
+
+@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 init
+
+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 init
+
+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
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+if "%@eval[2+2]" == "4" goto 4NT_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+goto execute
+
+:4NT_args
+@rem Get arguments from the 4NT Shell from JP Software
+set CMD_LINE_ARGS=%$
+
+: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 %CMD_LINE_ARGS%
+
+: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

gradle/greeter/.gitignore

@@ -0,0 +1,3 @@
+/.gradle
+/build
+/bin

gradle/greeter/build.gradle

@@ -0,0 +1,18 @@
+apply plugin : 'java'
+apply plugin : 'application'
+
+
+
+dependencies {
+    compile project(':greeting-library')
+    compile project(':greeting-library-java')
+}
+
+mainClassName = 'greeter.Greeter'
+run {
+    if (project.hasProperty("appArgs")) {
+        args Eval.me(appArgs)
+    }
+    else
+        args = ["Baeldung"];
+}

gradle/greeter/src/main/java/greeter/Greeter.java

@@ -0,0 +1,13 @@
+package greeter;
+
+import baeldunggreeter.Formatter;
+
+public class Greeter {
+    public static void main(String[] args) {
+        final String output = GreetingFormatter
+            .greeting(args[0]);
+        String date = Formatter.getFormattedDate();
+        System.out.println(output);
+        System.out.println("Today is :" + date);
+    }
+}

gradle/greeter/src/test/java/greetertest/TestGreeting.java

@@ -0,0 +1,11 @@
+
+
+
+
+public class TestGreeting{
+    
+    
+    
+    
+    
+}

gradle/greeting-library-java/.gitignore

@@ -0,0 +1,2 @@
+/build
+/bin

gradle/greeting-library-java/build.gradle

@@ -0,0 +1,9 @@
+apply plugin :'java'
+//apply plugin : 'application'
+
+
+
+dependencies{
+    compile group: 'joda-time', name: 'joda-time', version: '2.9.9'
+    testCompile group: 'junit', name: 'junit', version: '4.12'
+}

gradle/greeting-library-java/src/main/java/baeldunggreeter/Formatter.java

@@ -0,0 +1,14 @@
+package baeldunggreeter;
+
+import java.text.DateFormat;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+public class Formatter {
+    public static String getFormattedDate() {
+        DateFormat dateFormat = new SimpleDateFormat(
+            "yyyy-MM-dd HH:mm:ss");
+        Date date = new Date();
+        return dateFormat.format(date);
+    }
+}

gradle/greeting-library-java/src/test/java/baeldunggreetertest/FormatterTest.java

@@ -0,0 +1,23 @@
+package baeldunggreetertest;
+
+import static org.junit.Assert.assertTrue;
+
+import java.util.Date;
+import java.util.regex.Pattern;
+
+import org.junit.Test;
+
+import baeldunggreeter.Formatter;
+
+public class FormatterTest {
+
+    @Test
+    public void testFormatter() {
+
+        String dateRegex1 = "^((19|20)\\d\\d)-(0?[1-9]|1[012])-(0?[1-9]|[12][0-9]|3[01]) ([2][0-3]|[0-1][0-9]|[1-9]):[0-5][0-9]:([0-5][0-9]|[6][0])$";
+        String dateString = Formatter.getFormattedDate();
+        assertTrue(Pattern
+            .matches(dateRegex1, dateString));
+
+    }
+}

gradle/greeting-library/.gitignore

@@ -0,0 +1 @@
+/build/

gradle/greeting-library/bin/greeter/GreetingFormatter.groovy

@@ -0,0 +1,10 @@
+package greeter
+
+import groovy.transform.CompileStatic
+
+@CompileStatic
+class GreetingFormatter{
+    static String greeting(final String name) {
+        "Hello, ${name.capitalize()}"
+    }
+}

gradle/greeting-library/bin/greeter/GreetingFormatterSpec.groovy

@@ -0,0 +1,13 @@
+package greeter
+
+import spock.lang.Specification
+
+class GreetingFormatterSpec extends Specification {
+
+    def 'Creating a greeting'() {
+
+        expect: 'The greeeting to be correctly capitalized'
+        GreetingFormatter.greeting('gradlephant') == 'Hello, Gradlephant'
+
+    }
+}

gradle/greeting-library/build.gradle

@@ -0,0 +1,9 @@
+apply plugin : 'groovy'
+
+dependencies {
+    compile 'org.codehaus.groovy:groovy:2.4.12'
+
+    testCompile 'org.spockframework:spock-core:1.0-groovy-2.4', {
+        exclude module : 'groovy-all'
+    }
+}

gradle/greeting-library/src/main/groovy/greeter/GreetingFormatter.groovy

@@ -0,0 +1,10 @@
+package greeter
+
+import groovy.transform.CompileStatic
+
+@CompileStatic
+class GreetingFormatter{
+    static String greeting(final String name) {
+        "Hello, ${name.capitalize()}"
+    }
+}

gradle/greeting-library/src/test/groovy/greeter/GreetingFormatterSpec.groovy

@@ -0,0 +1,13 @@
+package greeter
+
+import spock.lang.Specification
+
+class GreetingFormatterSpec extends Specification {
+
+    def 'Creating a greeting'() {
+
+        expect: 'The greeeting to be correctly capitalized'
+        GreetingFormatter.greeting('gradlephant') == 'Hello, Gradlephant'
+
+    }
+}

gradle/junit5/build.gradle

@@ -0,0 +1,25 @@
+plugins {
+    // Apply the java-library plugin to add support for Java Library
+    id 'java-library'
+}
+
+dependencies {
+    testImplementation 'org.junit.jupiter:junit-jupiter-api:5.3.1'
+    testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.3.1'
+    
+    // Only necessary for JUnit 3 and 4 tests
+    testCompileOnly 'junit:junit:4.12' 
+    testRuntimeOnly 'org.junit.vintage:junit-vintage-engine:5.3.1' 
+    
+}
+
+repositories {
+    jcenter()
+}
+
+test {
+    useJUnitPlatform {
+    	includeTags 'fast'
+        excludeTags 'slow'
+    }
+}

gradle/junit5/src/test/java/com/example/CalculatorJUnit4Test.java

@@ -0,0 +1,12 @@
+package com.example;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Test;
+
+public class CalculatorJUnit4Test {
+    @Test
+    public void testAdd() {
+        assertEquals(42, Integer.sum(19, 23));
+    }
+}

gradle/junit5/src/test/java/com/example/CalculatorJUnit5Test.java

@@ -0,0 +1,36 @@
+package com.example;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Test;;
+
+public class CalculatorJUnit5Test {
+
+    @Tag("fast")
+    @Test
+    public void testAdd() {
+        assertEquals(42, Integer.sum(19, 23));
+    }
+
+    @Tag("slow")
+    @Test
+    public void testAddMaxInteger() {
+        assertEquals(2147483646, Integer.sum(2147183646, 300000));
+    }
+
+    @Tag("fast")
+    @Test
+    public void testAddZero() {
+        assertEquals(21, Integer.sum(21, 0));
+    }
+
+    @Tag("fast")
+    @Test
+    public void testDivide() {
+        assertThrows(ArithmeticException.class, () -> {
+            Integer.divideUnsigned(42, 0);
+        });
+    }
+}

gradle/plugin/build.gradle

@@ -0,0 +1,14 @@
+  repositories{
+      mavenCentral()
+  }
+  apply plugin: 'java'
+  apply plugin: 'maven'
+  apply plugin: com.baeldung.GreetingPlugin
+  dependencies {
+      compile gradleApi()
+  }
+
+  greeting {
+      greeter = "Stranger"
+      message = "Message from the build script!"
+  }

gradle/plugin/buildSrc/src/main/java/com/baeldung/GreetingPlugin.java

@@ -0,0 +1,17 @@
+package com.baeldung;
+
+import org.gradle.api.Plugin;
+import org.gradle.api.Project;
+
+public class GreetingPlugin implements Plugin<Project> {
+    @Override
+    public void apply(Project project) {
+
+        GreetingPluginExtension extension = project.getExtensions().create("greeting", GreetingPluginExtension.class);
+
+        project.task("hello").doLast(task -> {
+            System.out.println("Hello, " + extension.getGreeter());
+            System.out.println("I have a message for You: " + extension.getMessage()); }
+        );
+    }
+}

gradle/plugin/buildSrc/src/main/java/com/baeldung/GreetingPluginExtension.java

@@ -0,0 +1,22 @@
+package com.baeldung;
+
+public class GreetingPluginExtension {
+    private String greeter = "Baeldung";
+    private String message = "Message from Plugin!";
+
+    public String getGreeter() {
+        return greeter;
+    }
+
+    public void setGreeter(String greeter) {
+        this.greeter = greeter;
+    }
+
+    public String getMessage() {
+        return message;
+    }
+
+    public void setMessage(String message) {
+        this.message = message;
+    }
+}

gradle/settings.gradle

@@ -0,0 +1,10 @@
+rootProject.name = 'gradletutorial'
+
+
+include 'greeting-library'
+include 'greeting-library-java'
+include 'greeter'
+include 'gradletaskdemo'
+include 'junit5'
+
+println 'This will be executed during the initialization phase.'

gradle/version.properties

@@ -0,0 +1,3 @@
+#Version of the produced binaries. This file is intended to be checked-in.
+#It will be automatically bumped by release automation.
+version=0.0.1