Can you explain what the Gradle build automation system is and how it is used in projects?

Gradle is a build automation system used to manage the process of compilation, testing, packaging, and deployment of projects, including Java projects.

Main features of Gradle:

• Describes build tasks using scripts in Groovy or Kotlin DSL.
• Manages project dependencies by automatically downloading required libraries.
• Allows creating custom tasks and extending the build process.
• Integrates with IDEs and CI/CD systems.

In Java projects, Gradle is used for:

• Compiling source code.
• Running tests.
• Creating JAR or WAR files.
• Managing versions and publishing artifacts.

Example of a simple build.gradle for Java:

plugins {
    id 'java'
}

group 'com.example'
version '1.0'

dependencies {
    implementation 'org.apache.commons:commons-lang3:3.12.0'
    testImplementation 'junit:junit:4.13.2'
}

repositories {
    mavenCentral()
}

This script describes a project with dependencies and applies the Java plugin for building.