Gradle tutorial project : (#2922)

* Gradle tutorial project :
1. A multi-project build
2. Inclusive all required tasks and dependency example.

* Gradle tutorial is shifted to gradle folder

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/build.gradle

@@ -1,25 +1,35 @@
-apply plugin: 'java'
-apply plugin: 'maven'
-
+allprojects {
     repositories {
-   mavenCentral()
+        jcenter() 
+    }
 }
 
-dependencies{ 
-     compile 'org.springframework:spring-context:4.3.5.RELEASE' 
+
+subprojects {
+
+    version = '1.0'
 }
 
-task hello {   
-    println "this Baeldung's tutorial is ${awesomeness}"  
+apply plugin: 'eclipse'
+
+println 'This will be executed during the configuration phase.'
+
+task configured {
+    println 'This will also be executed during the configuration phase.'
 }
 
-uploadArchives {  
-    repositories {  
-        mavenDeployer {  
-            repository(url: 'http://yourmavenrepo/repository') {  
-                authentication(userName: 'user', password: 'password');  
+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.'
 }

gradle/gradle.properties

@@ -1,3 +0,0 @@
-awesomeness=awesome
-group=com.baeldung.tutorial
-version=1.0.1

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

@@ -1,6 +1,6 @@
-#Sat Dec 31 15:46:08 BRT 2016
+#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-3.2.1-bin.zip
+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

@@ -6,12 +6,30 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# 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"
 
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,26 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# 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 "$SAVED" >/dev/null
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -85,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+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

gradle/gradlew.bat

@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell
 if "%OS%"=="Windows_NT" setlocal
 
-@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=
-
 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
 
@@ -46,7 +46,7 @@ echo location of your Java installation.
 goto fail
 
 :init
-@rem Get command-line arguments, handling Windowz variants
+@rem Get command-line arguments, handling Windows variants
 
 if not "%OS%" == "Windows_NT" goto win9xME_args
 if "%@eval[2+2]" == "4" goto 4NT_args

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/settings.gradle

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

gradle/src/main/java/Main.java

@@ -1,5 +0,0 @@
-public class Main{
-    public static void main(String[] args){
-        System.out.println("Baeldung Rocks");
-    }
-}

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