crunch2.java

讲解在java平台上用AWT编写与图形有关的小程序

//Crunch2.java

public class Crunch2 implements Runnable {
	public int x;
	
	public static void main(String args[]) {
		Crunch2 r1 = new Crunch2();
		Thread t1 = new Thread(r1);
		Thread t2 = new Thread(r1);
		t1.start();
		t2.start();
	}
	
	public void run() {
		int hold;
		for (;;) {
			synchronized(this) {
				hold = x+1;
				try {
					Thread.sleep(1000);
				} catch (InterruptedException e) {
				}
				x = hold;
				System.out.println(Thread.currentThread().getName()+
					" value is now "+x);
			}
		}
	}
}