public class Thread extends Object implements Runnable

public Thread()
public Thread(Runnable target)
public Thread(Runnable target,String name)
public Thread(String name)

Thread thread = new Thread();

    /**
     * If this thread was constructed using a separate 
     * <code>Runnable</code> run object, then that 
     * <code>Runnable</code> object's <code>run</code> method is called; 
     * otherwise, this method does nothing and returns. 
     * <p>
     * Subclasses of <code>Thread</code> should override this method. 
     *
     * @see     #start()
     * @see     #stop()
     * @see     #Thread(ThreadGroup, Runnable, String)
     */
    public void run() {
    if (target != null) {
        target.run();
    }
    }