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Runnable

Name

Runnable

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


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