java多线程 银行取款

package net.okren.java;

import java.io.*;

//账户
class Account{
	private float balance = 1000;
	public float getBalance(){
		return balance;
	}
	
	public void setBalance(float balance){
		this.balance = balance;
	}
	
	public synchronized void withDraw(float money){
		if(balance >= money){
			System.out.println("取走 "+ money +"钱");
			try{
				Thread.sleep(1000);
			}catch(InterruptedException e){
				e.printStackTrace();
			}
			balance -= money;
		}else{
			System.out.println("余额不足 ");
		}
	}
}

class TestAccount1 extends Thread{
	private Account account;
	public TestAccount1(Account account){
		this.account = account;
	}
	
	public void run(){
		account.withDraw(800);
		System.out.println("余额为"+ account.getBalance());
	}
}

class TestAccount2 extends Thread{
	private Account account;
	public TestAccount2(Account account){
		this.account = account;
	}
	
	public void run(){
		account.withDraw(700);
		System.out.println("余额为 " + account.getBalance());
	}
}
public class JavaTest {
	
	public static void main(String[] args){
		
		Account account = new Account();
		TestAccount1 t1 = new TestAccount1(account);
		TestAccount2 t2 = new TestAccount2(account);
		t1.start();
		t2.start();
	
		
	}
}

评论

1 楼 ahutzh 2010-11-12  

学习一下