Set Groovy Development Environment

I. Install required SDK and IDE

1. Install Java SDK 8+
2. Install Gradle
3. Install Groovy
4. Install Intellij Idea

II. Create a new Groovy project using Gradle

1. Create a new project directory:

   mkdir my-groovy-app

2. Get into the project directory

   cd my-groovy-app

   and run gradle:

   gradle init
   Select type of project to generate:
     1: basic
     2: application
     3: library
     4: Gradle plugin
   Enter selection (default: basic) [1..4] 1
   
   Select build script DSL:
     1: Groovy
     2: Kotlin
   Enter selection (default: Groovy) [1..2] 1
   
   Generate build using new APIs and behavior (some features may change in the next minor release)? (default: no) [yes, no]
   Project name (default: my-groovy-app):
   
   > Task :init
   Get more help with your project: Learn more about Gradle by exploring our samples at https://docs.gradle.org/7.6/samples
   
   BUILD SUCCESSFUL in 22s
   2 actionable tasks: 2 executed
       

3. Edit build.gradle file and add the content (like below):

   plugins {
       id 'groovy'
       id 'application'
   }
   
   group 'myapps'
   version '1.0-SNAPSHOT'
   
   repositories {
       mavenCentral()
       maven {
           url 'https://my.org/mvn-repo'
       }
   }
   
   dependencies {
       implementation 'org.apache.groovy:groovy:4.0.7'
       implementation 'org.apache.ivy:ivy:2.5.0'
   
       testImplementation 'org.junit.jupiter:junit-jupiter-api:5.8.1'
       testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.8.1'
   }
   
   application {
   	mainClass = 'my.App'
   }
   
   test {
       useJUnitPlatform()
   }
       

4. Create source folder structure:

   mkdir src/main/groovy
   mkdir src/main/java
   mkdir src/main/resources
   mkdir src/test/groovy
   mkdir src/test/java
   mkdir src/test/resources
       

5. Optional: create gradle.properties file at the project root, and add the options below:

   org.gradle.warning.mode=all
   org.gradle.logging.stacktrace=full

6. Create Application class: my.App.groovy:

   package my
   
   class App {
       static void main(String[] args) {
       	println 'Hello, Wolrd'
       }
   }
     

7. Start Intellij Idea, open the project directory. Select src/main/groovy directory, Mark directory as -> Sources root