public interface Runnable
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,
Runnable is implemented by class
Thread. Being active simply means that a thread has been started and has not yet
Runnable provides the means for a class to be active while not
Thread. A class that implements
Runnable can run without
Thread by instantiating a
Thread instance and passing
itself in as the target. In most cases, the
Runnable interface should be used if you
are only planning to override the
run() method and no other
methods. This is important because classes should not be subclassed unless the programmer intends
on modifying or enhancing the fundamental behavior of the class.
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
run is that it may take any action whatsoever.