java多线程存钱，取钱例子

      类似javasheng生产者和消费者，同步保证数据的一致。利用wait()和notify()方法来实现线程间等待和调用。接口定义一个方法，money方法来实现接口，初始化对象，初始化金额。存钱和取钱类分别定义bank的字段。要存钱和取钱，，就要先调用接口的实现类。

TestBank2.java

package com.bank.test;public class TestBank2 {public static void main(String[] args) {Money m =new Money(new SourceMoney(){public void sourceMoney(Bank a) {// TODO Auto-generated method stub//Bank b = new Bank();cun c =new cun(a);get g =new get(a);new Thread(c).start();new Thread(g).start();}});new Thread(m).start();}}

money.java

package com.bank.test;public class Money implements Runnable {private SourceMoney sourcemoney;/** * @param sourcemoney */public Money(SourceMoney sourcemoney) {super();this.sourcemoney = sourcemoney;}public void run() {// TODO Auto-generated method stubBank b= new Bank();System.out.println("初始化金额");sourcemoney.sourceMoney(b);}}

SourceMoney.java

package com.bank.test;public interface SourceMoney {public void sourceMoney(Bank b);}

get.java

package com.bank.test;public class get implements Runnable {private Bank bank;/** * @param bank */public get(Bank bank) {super();this.bank = bank;}public void run() {// TODO Auto-generated method stubwhile(true){bank.get();}}}

cun.java

package com.bank.test;public class cun implements Runnable {private Bank bank;/** * @param bank */public cun(Bank bank) {super();this.bank = bank;

Bank.java

<pre name="code" class="java">package com.bank.test;public class Bank {private int a=200;public synchronized void cun(){System.out.println("存钱前原来的钱"+a);if(a>=1000){System.out.println("停止存钱");try {this.wait();} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}}try {Thread.sleep(200);} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}a=a+100;System.out.println("存钱后的金额"+a);this.notify();}public synchronized void get(){if(a<=0){System.out.println("不能再取钱了");try {this.wait();} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}}System.out.println("取钱前账户所剩的钱"+a);a=a-50;try {Thread.sleep(20);} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}System.out.println("取钱后的账户"+a);this.notify();}}