5.lock 锁

中断： 线程实例.interrupt();

lock锁的使用

package com.jlong;

 

import java.util.concurrent.locks.Condition;

import java.util.concurrent.locks.Lock;

import java.util.concurrent.locks.ReentrantLock;

 

 

class User {

    public String name;

    public String sex;

 

    public boolean flag = false;

 

    public Lock lock = new ReentrantLock();

 

    public Condition conditionLock = lock.newCondition();

}

 

class InputThread extends Thread {

    private User user;

 

    public InputThread(User user) {

        this.user = user;

    }

 

    int cout = 0;

 

    @Override

    public void run() {

 

        while (true) {

//加锁

            user.lock.lock();

            if (user.flag) {

                try {

//线程等待

                    user.conditionLock.await();

                } catch (InterruptedException e) {

                    e.printStackTrace();

                }

            }

            try {

                if (cout == 0) {

                    user.name = "jLong";

                    user.sex = "男";

                } else {

                    user.name = "燕子";

                    user.sex = "女";

                }

                cout = (cout + 1) % 2;

                user.flag = true;

//唤醒一个在 await()等待队列中的线程。与Object.notify()相似

                user.conditionLock.signal();

            } catch (Exception e) {

                e.printStackTrace();

            } finally {

//解锁

                user.lock.unlock();

            }

 

 

        }

    }

}

 

class OutputThread extends Thread {

 

 

    private User user;

 

    public OutputThread(User user) {

        this.user = user;

    }

 

    @Override

    public void run() {

        while (true) {

            user.lock.lock();

            if (!user.flag) {

                try {

                    user.conditionLock.await();

                } catch (InterruptedException e) {

                    e.printStackTrace();

                }

            }

            try {

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

                user.flag = false;

                user.conditionLock.signal();

            } catch (Exception e) {

                e.printStackTrace();

            } finally {

                user.lock.unlock();

            }

 

 

        }

    }

}

 

public class ThreadDemo {

    public static void main(String[] args) {

        User user = new User();

        InputThread inputThread = new InputThread(user);

        OutputThread outputThread = new OutputThread(user);

        inputThread.start();

        outputThread.start();

    }

}