threadboy.java

这是一个java当中

package test;
public class ThreadBoy
    extends Thread {
    public ThreadBoy() {
    }
    public void run(){
        while(true){
            System.out.println("I am a boy!");
            try {
                Thread.sleep(1000);
            }
            catch (InterruptedException ex) {
            }
        }
    }
}