JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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How to declare a task that depends on other task?


You can declare tasks that depend on other tasks. All you need to do is, use dependsOn keyword to declare dependent tasks. The dependent tasks will be executed first before executing requested task. Look at below example, how we have declared build task dependency with test task:

task test << {
        println 'i am a test task'
}
task build(dependsOn: test) << {
        println "i am build depends on test"
}

Run command gradle build on command-line:

java2novice$ gradle build
:test
i am a test task
:build
i am build depends on test

BUILD SUCCESSFUL

Total time: 1.701 secs

How to declare if your task depends on multiple tasks? It's simple, you can declare multiple tasks seperated by comma, and enclosed with in '[]', here is an example how to declare multiple dependencies:

task clean << {
        println 'i am a clean task'
}
task test << {
        println 'i am a test task'
}
task build(dependsOn: [clean, test]) << {
        println "i am build depends on test"
}

Run command gradle build on command-line:

java2novice$ gradle build
:clean
i am a clean task
:test
i am a test task
:build
i am build depends on test

BUILD SUCCESSFUL

Total time: 2.657 secs

Reference: Gradle Documentation

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What is adapter class?
An adapter class provides the default implementation of all methods in an event listener interface. Adapter classes are very useful when you want to process only few of the events that are handled by a particular event listener interface. You can define a new class by extending one of the adapter classes and implement only those events relevant to you.
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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java is registered trademark of Oracle.
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