java多线程的经典案例_java多线程经典案例

/**

* 典型案例：子线程执行10次，主线程执行100次，两者交替50次。

*/

package cn.itcast.lesson4;

public class TestWaitNotify {

public static void main(String[] args){

final Business business= new Business();

new Thread(

new Runnable() {

public void run() {

for(int i=1;i<=50;i++){

business.sub(i);

}

}

}

).start();

for(int i=1;i<=50;i++){

business.main(i);

}

}

}

class Business{

private boolean bShouldSub = true;

public synchronized void sub(int i){

//如果bussiness调用sub的话，则【!bShouldSub =false，bShouldSub=true】;

//然后主线程main为等待，执行完sub后就bShouldSub=false；唤醒主线程main。

while(!bShouldSub){

try {

this.wait();

} catch (InterruptedException e) {

e.printStackTrace();

}

}

for(int j=1;j<=10;j++){

System.out.println("sub thread sequence of "+j+",loop of "+i);

}

bShouldSub = false;

//唤醒main

this.notify();

}

public synchronized void main(int i){

while(bShouldSub){

try {

this.wait();

} catch (InterruptedException e) {

e.printStackTrace();

}

}

for(int j=1;j<=100;j++){

System.out.println("main thread sequence of "+j+",loop of "+i);

}

bShouldSub = true;

//唤醒sub

this.notify();

}

}