黑马程序员 java基础Thread随笔-优快云博客

本文链接：https://blog.youkuaiyun.com/lazy_xia/article/details/22457423

本文提供了一个关于线程间通讯的示例程序，通过两个线程分别进行输入和输出操作来演示如何实现线程间的同步。使用了synchronized关键字和wait/notify机制确保线程安全。

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/**
* 线程间通讯多个线程操作同一个资源操作方式不同
*
* @author lazy 单例可以保证资源单一
*
*/

class Res {
String name;
String sex;
boolean flag = false;
}

class Input implements Runnable {

private Res r;
Object obj = new Object();

public Input(Res r) {
// TODO Auto-generated constructor stub

this.r = r;
}

@Override
public void run() {
// TODO Auto-generated method stub
int x = 0;
while (true) {
synchronized (r) {
if (r.flag)// 0 false
try {
r.wait();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if (x == 0) {
r.name = "mike";
r.sex = "man";
} else {
r.name = "丽丽";
r.sex = "女女";
}
x = (x + 1) % 2;
r.flag = true;
r.notifyAll();
}
}
}
}

class Output implements Runnable {

private Res r;

Output(Res r) {
// TODO Auto-generated constructor stub
this.r = r;
}

@Override
public void run() {
// TODO Auto-generated method stub

while (true) {
synchronized (r) {
if (!r.flag)
try {
r.wait();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println(r.name + ".." + r.sex);
r.flag = false;
r.notify();
}
}
}
}

public class InputOutputDemo {

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub

Res r = new Res();
Input in = new Input(r);
Output out = new Output(r);

Thread t1 = new Thread(in);
Thread t2 = new Thread(out);
t1.start();
t2.start();
}

}