public interface Runnable
Runnable interface 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
run.
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
been stopped.
In addition, Runnable provides the means for a class to be active while not
subclassing Thread. A class that implements Runnable can run without
subclassing 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 Thread
methods. This is important because classes should not be subclassed unless the programmer intends
on modifying or enhancing the fundamental behavior of the class.
Thread| Modifier and Type | Method and Description |
|---|---|
void |
run()
When an object implementing interface
Runnable is used to create a thread,
starting the thread causes the object's run method to be called in that
separately executing thread. |
void run()
Runnable is used to create a thread,
starting the thread causes the object's run method to be called in that
separately executing thread.
The general contract of the method run is that it may take any action
whatsoever.
Thread.run()