- All Known Implementing Classes:
- 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 RunnableThe
Runnableinterface 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 called
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 class
Thread. Being active simply means that a thread has been started and has not yet been stopped.
Runnableprovides the means for a class to be active while not subclassing
Thread. A class that implements
Runnablecan run without subclassing
Threadby instantiating a
Threadinstance and passing itself in as the target. In most cases, the
Runnableinterface should be used if you are only planning to override the
run()method and no other
Threadmethods. This is important because classes should not be subclassed unless the programmer intends on modifying or enhancing the fundamental behavior of the class.
void run()When an object implementing interface
Runnableis used to create a thread, starting the thread causes the object's
runmethod to be called in that separately executing thread.
The general contract of the method
runis that it may take any action whatsoever.
- See Also: