死鎖原理: 兩個線程相互等待對方釋放同步監(jiān)視器

例子程序:

1 public class TestDeadLock implements Runnable { 2 3 public int flag = 1; 4 static Object o1 = new Object(), o2 = new Object(); 5 6 public void run() { 7 if (flag == 1) { 8 synchronized (o1) { 9 try { 10 Thread.sleep(500); 11 } catch (Exception e) { 12 e.printStackTrace(); 13 } 14 synchronized (o2) { 15 System.out.println("1"); 16 } 17 } 18 } 19 if (flag == 0) { 20 synchronized (o2) { 21 try { 22 Thread.sleep(500); 23 } catch (Exception e) { 24 e.printStackTrace(); 25 } 26 synchronized (o1) { 27 System.out.println("0"); 28 } 29 } 30 } 31 } 32 33 public static void main(String[] args) { 34 TestDeadLock td1 = new TestDeadLock(); 35 TestDeadLock td2 = new TestDeadLock(); 36 td1.flag = 1; 37 td2.flag = 0; 38 Thread t1 = new Thread(td1); 39 Thread t2 = new Thread(td2); 40 t1.start(); 41 t2.start(); 42 } 43 }

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轉(zhuǎn)載于:https://www.cnblogs.com/Kingram/p/9048862.html

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