java多线程例子_java多线程经典案例 | 学步园
/**
* 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();
}
}
/** * 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(); } }