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- All Known Subinterfaces:
RunnableFuture<V>,RunnableScheduledFuture<V>
- All Known Implementing Classes:
AsyncBoxView.ChildState,ForkJoinWorkerThread,FutureTask,RenderableImageProducer,SwingWorker,Thread,TimerTask
- Functional Interface:
- This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
@FunctionalInterface public interface Runnable
TheRunnableinterface should be implemented by any class whose instances are intended to be executed by a thread. The class must define a method of no arguments calledrun.This interface is designed to provide a common protocol for objects that wish to execute code while they are active. For example,
Runnableis implemented by classThread. Being active simply means that a thread has been started and has not yet been stopped.In addition,
Runnableprovides the means for a class to be active while not subclassingThread. A class that implementsRunnablecan run without subclassingThreadby instantiating aThreadinstance and passing itself in as the target. In most cases, theRunnableinterface should be used if you are only planning to override therun()method and no otherThreadmethods. This is important because classes should not be subclassed unless the programmer intends on modifying or enhancing the fundamental behavior of the class.
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description voidrun()When an object implementing interfaceRunnableis used to create a thread, starting the thread causes the object'srunmethod to be called in that separately executing thread.
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Method Detail
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run
void run()
When an object implementing interfaceRunnableis used to create a thread, starting the thread causes the object'srunmethod to be called in that separately executing thread.The general contract of the method
runis that it may take any action whatsoever.- See Also:
Thread.run()
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