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/**
* JavaỊ̈߳ºÏ̵߳ĵ÷¶È-Èò½
*
* @author leizhimin 2009-11-4 9:02:40
*/
public class Test {
        public static void main(String[] args) {
                Thread t1 = new MyThread1();
                Thread t2 = new Thread(new MyRunnable());
                t2.start();
                t1.start();
        }
}
class MyThread1 extends Thread {
        public void run() {
                for (int i = 0; i < 10; i++) {
                        System.out.println("Ïß³Ì1µÚ" + i + "´ÎÖ´ÐУ¡");
                }
        }
}
class MyRunnable implements Runnable {
        public void run() {
                for (int i = 0; i < 10; i++) {
                        System.out.println("Ïß³Ì2


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{
 public static void main(String[] args){
  //== ÓëequalsµÄÇø±ð
  //1.nullµÄ±È½Ï£ºÖ»ÄÜÓÃ==
  System.out.println("1.nullµÄ±È½Ï£ºÖ»ÄÜÓÃ==");
  Object o1=null,o2=null;
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