Runnable

Name

Synopsis

• Interface Name:
• java.lang.Runnable
• Super-interface:
• None
• Immediate Sub-interfaces:
• None
• Implemented By:
• java.lang.Thread
• Availability:
• JDK 1.0 or later

Description

The Runnable interface declares the run() method that is required for use with the Thread class. Any class that implements the Runnable interface must define a run() method. This method is the top-level code that is run by a thread.

Interface Declaration

public interface java.lang.Runnable {
 // Methods public abstract void run();
}

Methods

run

public abstract void run()

• Description
• When a Thread object starts running a thread, it associates executable code with the thread by calling a Runnable object's run() method. The subsequent behavior of the thread is controlled by the run() method. Thus, a class that wants to perform certain operations in a separate thread should implement the Runnable interface and define an appropriate run() method. When the run() method called by a Thread object returns or throws an exception, the thread dies.

See Also

Thread; ThreadGroup; Threads 8