test30.java

SCJP认证考试资料

class Test30 extends Thread {
    static String s = new String("hi");
    public void run() {
	try {
	    synchronized(s) {
		System.out.println(Thread.currentThread().getName());
		Thread.sleep(1000);
		System.out.println(Thread.currentThread().getName());
	    }
	} catch (InterruptedException e) {
	    
	}
    }
    public static void main(String[] args) {
	Test30 t1 = new Test30();
	Test30 t2 = new Test30();
        t1.start();
        t2.start();
    }
}