Java多线程基础学习（一）

public final native void notify()

注意：在notify()方法后，当前线程不会马上释放该对象锁，要等到执行notify()方法的线程将程序执行完，也就是退出同步代码块中。

 package wait.notify;
public class ThreadWaitNotifyTest {

     final static Object object=new Object();

     public static class T1 extends Thread{

         public void run(){

             System.out.println(System.currentTimeMillis()+": T1 start");

             synchronized (object){

                 try {

                     System.out.println(System.currentTimeMillis()+": T1 wait");

                     object.wait();

                 } catch (InterruptedException e) {

                     e.printStackTrace();

                 }

             }

             System.out.println(System.currentTimeMillis()+": T1 end");

         }

     }

     public static class T2 extends Thread{

         public void run(){

             System.out.println(System.currentTimeMillis()+": T2 start");

             synchronized (object){

                 System.out.println("T2 synchonized code start.");

                 object.notify();

                 try {

                     Thread.sleep(2000);

                 } catch (InterruptedException e) {

                     e.printStackTrace();

                 }finally{

                     System.out.println("T2 synchonized code end.");

                 }
}

             try {

                 Thread.sleep(2000);

             } catch (InterruptedException e) {

                 e.printStackTrace();

             }

             System.out.println(System.currentTimeMillis()+": T2 end");

         }

     }

     public static void main(String[] args){

         Thread thread1=new T1();

         Thread thread2=new T2();

         thread1.start();

         thread2.start();

     }

 }

输出结果：