前言

本篇文章主要介绍下如何使用Gradle来配置Java工程。
主要简单介绍下手动配置流程，避免其它复杂的步骤，尽量争取简洁明了。

手动配置

首先，你需要下载一个Gradle可执行文件，解压后将路径添加到系统环境变量中。

environment_path
配合完成后，在控制台输入:gradle -v,如果显示下图所示信息，那么就说明Gradle已经被成功安装到系统中了。
gradle_version
接下来，手动创建一个Java工程根目录:mkdir java-demo
进入java-demo目录内，手动创建子目录结构:
mkdir -p src/main/java/com/yn/test

tree.PNG
然后我们就可以创建Java源文件:

package com.yn.test;

public class HelloWorld{
    public static void main(String[] args){
        System.out.println("Build Java Project by Gradle");
    }
}

在工程根目录下创建一个build.gradle文件，进行配置：

/*
 * This build file was generated by the Gradle 'init' task.
 *
 * This generated file contains a sample Java project to get you started.
 * For more details take a look at the Java Quickstart chapter in the Gradle
 * user guide available at https://docs.gradle.org/4.0.1/userguide/tutorial_java_projects.html
 */

// Apply the java plugin to add support for Java
apply plugin: 'java' 

// Apply the application plugin to add support for building an application
apply plugin: 'application' 

// In this section you declare where to find the dependencies of your project
repositories {
    // Use jcenter for resolving your dependencies.
    // You can declare any Maven/Ivy/file repository here.
    jcenter()
}

dependencies {
    // This dependency is found on compile classpath of this component and consumers.
 //   compile 'com.google.guava:guava:21.0'

    // Use JUnit test framework
//    testCompile 'junit:junit:4.12'
}

// Define the main class for the application
mainClassName = 'com.yn.test.HelloWorld'