How to QuicStart Building A Java Project With Gradle on Linux-Unix Easy Guide

Gradle Java Hello-World Basic Builds

The Linux/Unix Tutorial shows you Step-by-Step How to Getting-Started with a Gradle Basic Java Hello-World Project.

Gradle Java plugin goes far beyond the basic functionality of source code Compilation and Packaging.
It establishes a Standard Layout for your project and makes sure that the correct tasks are executed for Building a Java project.

Building an Ordinary Java Main Class with Gradle

1. How to Install the Latest Gradle on Linux/Unix.

   Gradle Installation Guide

   Gradle Setup

2. Making the Java Directory Scheme
   For Default Gradle use the Maven Build Directories Structure Convention

   mkdir -p ~/Documents/gradle/java/myProject

   cd ~/Documents/gradle/java/myProject

   For the Main Class make:

   mkdir -p src/main/java

   For the Testing Classes instead:

   mkdir -p src/test/java

   In Case of a Java Package then Expand the Default Java Directories Structure…

3. Create a simple Java POJO.

   nano src/main/java/HelloWorld.class

   public class HelloWorld {
   public static void main(String args[]) {
   System.out.println("hello, world");
   }
   }
   

   Ctrl+x to Save & Exit from nano Editor :)

4. Making Gradle Java Build File.

   nano build.gradle

   Append:

   apply plugin: 'java'

   To Activate the Gradle Java Plugin!

5. Building the Java Project with Gradle.

   gradle build

   Output like:

   :compileJava UP-TO-DATE
   :processResources UP-TO-DATE
   :classes UP-TO-DATE
   :jar
   :assemble
   :compileTestJava UP-TO-DATE
   :processTestResources UP-TO-DATE
   :testClasses UP-TO-DATE
   :test
   :check
   :build
   BUILD SUCCESSFUL
   

6. Running the Java Hello-World Example.

   java -cp build/classes/main/ HelloWorld