Java 多线程编程

1.synchronized/wait/notify

 package javamultithread;

 import java.util.logging.Level;
 import java.util.logging.Logger;

 /**
  *
  * @author Tina
  */
 public class Thread1 implements Runnable {

     private final Object current;
     private final Object next;
     private String name;

     public Thread1(String name, Object current, Object next) {
         this.name = name;
         this.current = current;
         this.next = next;
     }

     @Override
     public void run() {
         for (int i = 0; i < 10; i++) {
             synchronized (current) {
                 synchronized (next) {
                     System.out.print(name);
                     if (name.equalsIgnoreCase("C")) {
                         System.out.println();
                     }
                     next.notify();
                 }
                 if (i < 9) {
                     try {
                         current.wait();
                     } catch (InterruptedException ex) {
                         Logger.getLogger(Thread1.class.getName()).log(Level.SEVERE, null, ex);
                     }
                 }
             }
         }
     }

     public static void main(String[] args) {
         try {
             // TODO code application logic here
             Object o1 = new Object();
             Object o2 = new Object();
             Object o3 = new Object();
             Thread th1 = new Thread(new Thread1("A", o1, o2));
             Thread th2 = new Thread(new Thread1("B", o2, o3));
             Thread th3 = new Thread(new Thread1("C", o3, o1));
             th1.start();
             Thread.sleep(10);
             th2.start();
             Thread.sleep(10);
             th3.start();
             Thread.sleep(10);
         } catch (InterruptedException ex) {
             Logger.getLogger(JavaMultiThread.class
                     .getName()).log(Level.SEVERE, null, ex);
         }

     }
 }

执行结果：

run:
ABC
ABC
ABC
ABC
ABC
ABC
ABC
ABC
ABC
ABC
成功构建 (总时间:  秒)