How to add external library’s sources and javadoc to gradle with IntelliJ?

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I’m not sure if your library is stored in a maven repository or not. I assume it is.

I know of two ways of importing a gradle project into IntelliJ. The first being the “Import Project…” wizard from IntelliJ which works nicely. But it does not import the javadoc jars if they exist. At least I never managed it.

The second method uses the idea plugin in gradle 2.1. The plugin generates the project for you. This way I got the javadoc inside. A fully working example for a build.gradle:

apply plugin: 'java'
apply plugin: 'idea'

sourceCompatibility = '1.7'
targetCompatibility = '1.7'

repositories {
    mavenCentral()
}

dependencies {
    compile group: 'org.apache.commons', name: 'commons-compress', version: '1.8.1'
    compile group: 'com.google.guava', name: 'guava', version: '18.0'

    testCompile group: 'junit', name: 'junit', version: '4.11'
    testCompile group: 'org.mockito', name: 'mockito-all', version: '1.8.5'
}

idea{
    project {
        languageLevel="1.7"
    }
    module {
        downloadJavadoc = true // defaults to false
        downloadSources = true
    }
}

The you can call gradle cleanIdea idea which creates your project for IntelliJ.

If your library is not stored in a maven repository you can simply put up a nexus where you upload it. This would allow you to use the method described above.

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