These properties are provided by convention objects of type JavaPluginConvention,

BasePluginConvention and ReportingBasePluginConvention.

23.7. Working with source sets

You can access the source sets of a project using the sourceSets property. This is a container for the project's source sets, of typeSourceSetContainer. There is also a sourceSets { } script block, which you can pass a closure to configure the source set container. The source set container works pretty much the same way as other containers, such as tasks.

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Example 23.3. Accessing a source set

build.gradle

//Various ways to access the main source set println sourceSets.main.output.classesDir println sourceSets['main'].output.classesDir sourceSets {

println main.output.classesDir

}

sourceSets { main {

println output.classesDir

}

}

//Iterate over the source sets sourceSets.all {

println name

}

To configure an existing source set, you simply use one of the above access methods to set the properties of the source set. The properties are described below. Here is an example which configures the main Java and resources directories:

Example 23.4. Configuring the source directories of a source set

build.gradle

sourceSets { main {

java {

srcDir 'src/java'

}

resources {

srcDir 'src/resources'

}

}

}

23.7.1. Source set properties

The following table lists some of the important properties of a source set. You can find more details in the API documentation for SourceSet.

Table 23.9. Java plugin - source set properties

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executing the classes of this source set.

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23.7.2. Defining new source sets

To define a new source set, you simply reference it in the sourceSets { } block. Here's a

example:

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Example 23.5. Defining a source set

build.gradle

sourceSets { intTest

}

When you define a new source set, the Java plugin adds some dependency configurations for the source set, as shown in Table 23.6, “Java plugin - source set dependency configurations”.You can use these configurations to define the compile and runtime dependencies of the source set.

Example 23.6. Defining source set dependencies

build.gradle

sourceSets { intTest

}

dependencies {

intTestCompile 'junit:junit:4.8.2' intTestRuntime 'asm:asm-all:3.3.1'

}

The Java plugin also adds a number of tasks which assemble the classes for the source set, as shown in Table 23.2, “Java plugin - source set tasks”.For example, for a source set called intTes

, you can run gradle intTestClasses to compile the int test classes.

Example 23.7. Compiling a source set

Output of gradle intTestClasses

> gradle intTestClasses :compileIntTestJava :processIntTestResources :intTestClasses

BUILD SUCCESSFUL

Total time: 1 secs

23.7.3. Some source set examples

Adding a JAR containing the classes of a source set:

Example 23.8. Assembling a JAR for a source set

build.gradle

task intTestJar(type: Jar) {

from sourceSets.intTest.output

}

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