线程的交互

class Calculator extends Thread { int total=0; public void run() { synchronized (this) { for (int i = 0; i < 101; i++) { total += i; } notifyAll(); } // 通知所有在此对象上等待的线程 } } /** * 获取计算结果并输出 * * @author leizhimin 2008-9-20 11:15:22 */ public class ReaderResult extends Thread { Calculator c; public ReaderResult(Calculator c) { this.c = c; } public void run() { synchronized (c) { // try { // System.out.println(Thread.currentThread() + "等待计算结果。。。"); // c.wait(); // } catch (InterruptedException e) { // e.printStackTrace(); // } // System.out.println(Thread.currentThread() + "计算结果为：" + c.total); if(c.total==0){ try { System.out.println(Thread.currentThread() + "等待计算结果。。。"); c.wait(); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } } System.out.println(Thread.currentThread() + "计算结果为：" + c.total); } } public static void main(String[] args) { Calculator calculator = new Calculator(); // 启动三个线程，分别获取计算结果 new ReaderResult(calculator).start(); new ReaderResult(calculator).start(); new ReaderResult(calculator).start(); // 启动计算线程 calculator.start();//有可能产生死等现象 } }