多线程 money
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package com.phj20110824.Thread;public class Account {private int balance;//余额public synchronized void withdraw(int money){balance=balance+money;}public synchronized void getMoney(int money){//if(money<=this.balance){balance=balance-money;//}}public int getBalance(){return this.balance;}}package com.phj20110824.Thread;public class GetMoney implements Runnable {private Account account;public GetMoney(Account account) {this.account = account;}@Overridepublic void run() {// TODO Auto-generated method stubfor (int i = 0; i < 10; i++) {this.account.getMoney(500);}}}package com.phj20110824.Thread;public class AddMoney implements Runnable {private Account account;public AddMoney(Account account) {this.account = account;}@Overridepublic void run() {// TODO Auto-generated method stubfor (int i = 0; i < 10; i++) {this.account.withdraw(500);}}}package com.phj20110824.Thread;public class AccountTest {public static void main(String[] args) {Account account = new Account();GetMoney getmoney = new GetMoney(account);AddMoney addmoney = new AddMoney(account);new Thread(getmoney).start();new Thread(addmoney).start();try {Thread.sleep(2000);} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}System.out.println(account.getBalance());}}
