Java实现银行存取款

本文实例为大家分享了Java银行存取款的具体代码，供大家参考，具体内容如下

1.不加锁情况

运行结果：

代码：将加锁情况中加锁部分进行注释即可

2.加锁情况

运行结果

缓冲区代码

package Bank;

import java.util.LinkedList;

public class BankAccount {
 static double sum=1000;

 private LinkedList<Object> list = new LinkedList<>();
 //存款
 public void deposit() {
 synchronized(list)
 {
 System.out.print(list.size());
 while(list.size()>1) {

 System.out.println("暂不支持存款");
 try {
  // System.out.print("wait");
  list.wait();
 } catch (InterruptedException e) {
  e.printStackTrace();
  //System.out.print("wait");
    }
 }
 list.add(new Object());
  int money=300;
 sum=sum+money;
 System.out.println(Thread.currentThread().getName()+"存入了"+money+"元"+"现在共有存款"+sum);
   list.notifyAll();
 }
 }
 //取款
 public void withdrawal() {
 synchronized(list)
 {
 while(list.size()==0) {
// int money=50;
// sum=sum-money;
 System.out.println(Thread.currentThread().getName()+"暂时不支持取款");
 try {
  list.wait();
 } catch (InterruptedException e) {
  e.printStackTrace();
 }
 }
 list.remove();
 int money=200;
 if(sum>200)
 {
 sum=sum-money;
 System.out.println(Thread.currentThread().getName()+"取出了"+money+"元"+"现在共有存款"+sum);
 }else {
 System.out.println("账户余额不足");
 }
 list.notify();

 }
 }

}

存款代码

package Bank;

public class Deposit implements Runnable {
 private BankAccount bankAccount1;
 public Deposit() {}

 public Deposit(BankAccount bankAccount1) {
 this.bankAccount1=bankAccount1;
 }

 @Override
 public void run() {
 // TODO Auto-generated method stub
 while(true) {
 try {
 Thread.sleep(2000);
 bankAccount1.deposit();
 } catch (InterruptedException e) {
 // TODO: handle exception
 e.printStackTrace();
 }
 }
 }
}

取款代码

package Bank;

public class Withdrawal implements Runnable{

 private BankAccount bankAccount;

 public Withdrawal() {}

 public Withdrawal(BankAccount bankAccount)
 {
 this.bankAccount=bankAccount;
 }

 @Override
 public void run() {
 // TODO Auto-generated method stub
 while(true)
 {
 try {
 Thread.sleep(3000);
 bankAccount.withdrawal();

 } catch (InterruptedException e) {
 // TODO: handle exception
 e.printStackTrace();
 }
 }
 }
}

主函数代码

package Bank;

public class Main {
 public static void main(String[] args) {
 BankAccount bankAccount1=new BankAccount();

 Thread d1=new Thread(new Deposit(bankAccount1));
 Thread d2=new Thread(new Deposit(bankAccount1));
 Thread d3=new Thread(new Deposit(bankAccount1));

 Thread w1=new Thread(new Withdrawal(bankAccount1));
 Thread w2=new Thread(new Withdrawal(bankAccount1));
 Thread w3=new Thread(new Withdrawal(bankAccount1));

 d1.start();
 d2.start();
 d3.start();
 w1.start();
 w2.start();
 w3.start();

 }
}

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