[Gradle] Multi-Project

설명

• lib 프로젝트의 Calculator 클래스를 app 프로젝트에서 사용할 수 있도록 Multi-Project를 구성하는 예제

root-project

• root-project/settings.gradle

  rootProject.name = 'root-project'
  include 'lib', 'app' // subprojects 설정
  

lib

• root-project/lib/build.gradle

  plugins {
      id 'java'
  }
  
  group 'org.example.lib'
  version '1.0-SNAPSHOT'
  
  repositories {
      mavenCentral()
  }
  
  dependencies {
      testCompile group: 'junit', name: 'junit', version: '4.12'
  }
  

• root-project/lib/src/main/java/org/example/lib/Calculator

  package org.example.lib;
  
  public class Calculator {
      public static int add(int a, int b) {
          return a + b;
      }
  }
  

app

• root-project/app/build.gradle

  plugins {
      id 'java'
  }
  
  group 'org.example.app'
  version '1.0-SNAPSHOT'
  
  repositories {
      mavenCentral()
  }
  
  dependencies {
      implementation project(':lib') // dependency 추가
      testCompile group: 'junit', name: 'junit', version: '4.12'
  }
  

• root-project/app/src/main/java/org/example/app/App

  package org.example.app;
  
  import org.example.lib.Calculator;
  
  public class App {
      public static void main(String[] args) {
          System.out.println(Calculator.add(1, 2));
      }
  }
  

참고

• https://docs.gradle.org/current/userguide/declaring_dependencies_between_subprojects.html#declaring_dependencies_between_subprojects