Gradle vs Maven: Install, Wrapper, and Dependency Management Explained

Why consider Gradle?

Many Java developers use Maven, but it has drawbacks: long XML files, inflexible configuration, and limited support for newer Java versions.

Installing Gradle

The traditional way is to download the binary package from the official site and add it to PATH. A more convenient method is to use a package manager: on Linux use the system package manager, on Windows use Scoop.

Using the Gradle Wrapper in IDEA

IDEA creates projects with the wrapper by default. The project structure mirrors Maven’s, with a gradle folder and gradlew scripts, and the build script build.gradle replaces Maven’s pom.xml.

Dependency Management

Gradle’s dependency syntax is concise. Example:

dependencies {
    testImplementation 'junit:junit:4.13'
    implementation 'com.google.code.gson:gson:2.8.6'
}

Gradle supports several configurations:

implementation : available at compile and runtime, but not exposed to consumers.

api : similar to implementation but exposed to consumers.

compileOnly and runtimeOnly : visible only during compilation or runtime respectively.

testImplementation , testCompileOnly , testRuntimeOnly : the same scopes for test code.

Tasks and Plugins

Gradle scripts are Groovy code, allowing custom tasks such as measuring JAR size with just a few lines, whereas Maven requires separate plugins. Gradle also has a rich plugin ecosystem, e.g., the gretty plugin for running web projects on Tomcat or Jetty.

Configuring Mirrors

To speed up downloads, add Maven mirrors to init.gradle in the .gradle directory, for example:

allprojects {
    repositories {
        maven { url 'https://maven.aliyun.com/repository/public' }
        maven { url 'https://maven.aliyun.com/repository/jcenter' }
        // other mirrors …
    }
}

Proxy Settings

Global proxy can be set in gradle.properties:

org.gradle.jvmargs=-Xmx4g -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8
systemProp.http.proxyHost=127.0.0.1
systemProp.http.proxyPort=10800
systemProp.https.proxyHost=127.0.0.1
systemProp.https.proxyPort=10800
systemProp.file.encoding=UTF-8
org.gradle.warning.mode=all

Why use Gradle?

Gradle is faster thanks to build caching and the daemon, more flexible because the build file is executable Groovy code, and more concise than Maven’s XML. These advantages have led many projects, including Spring and Android, to adopt Gradle.

Overall, learning Gradle is essential for modern Java backend development.