java.lang
Interface Runnable
- All Known Implementing Classes:
- Thread
public interface Runnable
The 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.
|
Method Summary |
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. |
run
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.
The general contract of the method run is that it may take any action
whatsoever.