4.多線程之間的通信

什麼是多線程的通信？

多線程之間的通信，其實就是多個線程同時去操做同一個資源，可是操做動做不一樣

 

 

package com.jlong;

 

class User {

    public String name;

    public String sex;

 

    public boolean flag=false;

}

 

class InputThread extends Thread {

    private User user;

 

    public InputThread(User user) {

        this.user = user;

    }

 

    int cout = 0;

 

    @Override

    public void run() {

 

        while (true) {

            synchronized (user) {

                if(user.flag){

                    try {

                        user.wait();

                    } catch (InterruptedException e) {

                        e.printStackTrace();

                    }

                }

 

                if (cout == 0) {

                    user.name = "jLong";

                    user.sex = "男";

                } else {

                    user.name = "燕子";

                    user.sex = "女";

                }

                cout = (cout + 1) % 2;

                user.flag=true;

                user.notify();

            }

 

        }

    }

}

 

class OutputThread extends Thread {

 

 

    private User user;

 

    public OutputThread(User user) {

        this.user = user;

    }

 

    @Override

    public void run() {

        while (true) {

            synchronized (user) {

                if(!user.flag){

                    try {

                        user.wait();

                    } catch (InterruptedException e) {

                        e.printStackTrace();

                    }

                }

                System.out.println(user.name + "--" + user.sex);

                user.flag=false;

                user.notify();

            }

 

        }

    }

}

 

public class ThreadDemo01 {

    public static void main(String[] args) {

        User user = new User();

        InputThread inputThread = new InputThread(user);

        OutputThread outputThread = new OutputThread(user);

        inputThread.start();

        outputThread.start();

    }

}