按訂單號（String常量池唯一，即物件唯一）加同步鎖
阿新 • • 發佈：2019-01-27
package com.mmhlive.bdp.service; public class TestLock implements Runnable{ public static void main(String[] args) { TestLock tl1=new TestLock("th1"); TestLock tl2=new TestLock("th2"); new Thread(tl1).start(); new Thread(tl2).start(); } public TestLock(String name) { this.name=name; } private String name; @Override public void run() { synchronized ("orderId") { System.out.println(name); try { Thread.sleep(10000000); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } }
輸出：th1
package com.mmhlive.bdp.service; public class TestLock implements Runnable{ public static void main(String[] args) { TestLock tl1=new TestLock("th1"); TestLock tl2=new TestLock("th2"); new Thread(tl1).start(); new Thread(tl2).start(); } public TestLock(String name) { this.name=name; } private String name; @Override public void run() { Object obj=new Object(); // synchronized ("orderId") { synchronized (new String("orderId")) { System.out.println(name); try { Thread.sleep(10000000); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } }
輸出：
th1
th2