Java中的线程实现

public class HelloThread extends Thread {
 
    public void run() {
        System.out.println("Hello from a thread!");
    }
 
    public static void main(String args[]) {
        (new HelloThread()).start();
    }
 
}

public classHelloRunnable implements Runnable {
    public void run() {
        System.out.println("Hello from athread!");
    }
 
    public static void main(String args[]) {
        (new Thread(newHelloRunnable())).start();
    }
 
}