本文主要是介绍Lesson_for_java_day21--java的多线程练习(ATM存取款机、多窗口卖票系统、5人赛跑)，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
一、ATM存取款机：
package sonyi;//取款机存取钱练习：public class TestATM {public static void main(String[] args) {//开户Account1 a = new Account1(11111, 100);System.out.println(a);//存取钱new Thread(new ATMWindow(a, 1, 50),"ATM1").start();new Thread(new ATMWindow(a, 2, 100),"ATM2").start();new Thread(new ATMWindow(a, 2, 150),"ATM3").start();new Thread(new ATMWindow(a, 1, 50),"ATM4").start();new Thread(new ATMWindow(a, 1, 150),"ATM5").start();new Thread(new ATMWindow(a, 1, 250),"ATM6").start();new Thread(new ATMWindow(a, 2, 250),"ATM7").start();new Thread(new ATMWindow(a, 2, 100),"ATM8").start();new Thread(new ATMWindow(a, 1, 200),"ATM9").start(); }
}//取款机
class ATMWindow implements Runnable{private Account1 ac;private int oper;//oper=1 存钱； oper=2 取钱private int m; //取或存的金额public ATMWindow(Account1 ac, int oper, int m) {this.ac = ac;this.oper = oper;this.m = m;}public void run() {switch(oper) {case 1:ac.saveMoney(m);break;case 2:ac.drawMoney(m);break;default:System.out.println("没有选择！");}}
}//账户类
class Account1 {private int id;private int money;Account1(int id, int money) {this.id = id;this.money = money;}//存钱public synchronized void saveMoney(int m) {money += m;System.out.println("账户：" + id + "从" + Thread.currentThread().getName() + "中存入" + m + "元,当前余额为" + money);this.notifyAll();//当账户中存入钱时，唤醒所有线程}//取钱public synchronized void drawMoney(int m) {while (money < m) {//设置循环，当余额不足时，线程等待。System.out.println("当前余额不足！");try {this.wait();} catch (InterruptedException e) {e.printStackTrace();} }money -= m;System.out.println("账户：" + id + "从" + Thread.currentThread().getName() +"中取出" + m + "元,当前余额为" + money);}public int getId() {return id;}public void setId(int id) {this.id = id;}public int getMoney() {return money;}public void setMoney(int money) {this.money = money;}@Overridepublic String toString() {return "当前账户：" + id + ", 余额为：" + money ;}
}二、多窗口卖票系统：
package cn.imcore.test;
//多窗口卖票系统
public class TestTicket {public static void main(String[] args) { Ticket2 ticket = new Ticket2();new Thread(ticket, "窗口1").start();new Thread(ticket, "窗口2").start();new Thread(ticket, "窗口3").start();}
}class Ticket2 implements Runnable{int ticket = 100;public void run() {while(true) {synchronized (this) {if(ticket==0) break;System.out.println(Thread.currentThread().getName() + ":卖出第" + (ticket--) + "张票");} try {Thread.sleep(1);} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}
}三、5人赛跑比赛：
package sonyi;
//5位选手同时赛跑，记录最先到达终点的人，并结束比赛。打印冠军选手。public class WinnerTest {public static void main(String[] args) {Thread t1 = new Man("选手1");Thread t2 = new Man("选手2");Thread t3 = new Man("选手3");Thread t4 = new Man("选手4");Thread t5 = new Man("选手5");t1.start();t2.start();t3.start();t4.start();t5.start();try {t1.join();t2.join();t3.join();t4.join();t5.join();} catch (InterruptedException e) {e.printStackTrace();}System.out.println(Man.winName + "跑赢了");}
}//比赛人员线程
class Man extends Thread {static boolean flag = false;//比赛未结束public static String winName = "";private String name;public Man(String name) {this.name = name;}public void run() {int len = 1;while(!flag) {if(flag) break;if(len==10){flag = true;//比赛结束winName = name;break;}System.out.println(name + "跑了" + len + "米。");len++;}}
}
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