1 public class DeadlockTest {
 2     private static final Object o1 = new Object();
 3     private static final Object o2 = new Object();
 4 
 5     public static void main(String[] args) {
 6         new Thread(new Runnable() {
 7             public void run() {
 8                 for (; ; ) {
 9                     synchronized (o1) {
10                         System.out.println("A線程獲取o1鎖");
11                         synchronized (o2) {
12                             System.out.println("繼續執行要持有o2鎖");
13                         }
14                     }
15                 }
16             }
17         }, "A").start();
18         new Thread(new Runnable() {
19             public void run() {
20                 for (; ; ) {
21                     synchronized (o2){
22                         System.out.println("B線程獲取o2鎖");
23                         synchronized (o1){
24                             System.out.println("繼續執行要持有o1鎖");
25                         }
26                     }
27                 }
28             }
29         }, "B").start();
30     }
31 }