使用AtomicLong，经典银行账户问题

1.新建Account类，使用AtomicLong定义账户余额，增加和减少金额方法使用getAndAdd方法。

package com.xkzhangsan.atomicpack.bank;import java.util.concurrent.atomic.AtomicLong;public class Account {private AtomicLong balance = new AtomicLong();public void addAmount(long amount){this.balance.getAndAdd(amount);}public void substractAmount(long amount){this.balance.getAndAdd(-amount);}public long getBalance() {return balance.get();}public void setBalance(long balance) {this.balance.set(balance);}}

2.Bank和Company类与https://www.cnblogs.com/xkzhangsanx/p/10759690.html一致。

3.测试类

package com.xkzhangsan.atomicpack.bank;public class Main {public static void main(String[] args) {Account account = new Account();account.setBalance(1000);Company company = new Company(account);Thread companyThread = new Thread(company);Bank bank = new Bank(account);Thread bankThread = new Thread(bank);System.out.printf("Account start money:%d\n", account.getBalance());companyThread.start();bankThread.start();try {companyThread.join();bankThread.join();System.out.printf("Account end money:%d\n", account.getBalance());} catch (InterruptedException e) {e.printStackTrace();}}
}

4.测试结果

Account start money:1000
Bank substract 1000 balance:1000
Company add 1000 balance:1000
Company add 1000 balance:1000
Bank substract 1000 balance:0
Company add 1000 balance:2000
Company add 1000 balance:2000
Company add 1000 balance:3000
Company add 1000 balance:4000
Company add 1000 balance:5000
Company add 1000 balance:6000
Company add 1000 balance:7000
Company add 1000 balance:8000
Bank substract 1000 balance:1000
Bank substract 1000 balance:7000
Bank substract 1000 balance:6000
Bank substract 1000 balance:5000
Bank substract 1000 balance:4000
Bank substract 1000 balance:3000
Bank substract 1000 balance:2000
Bank substract 1000 balance:1000
Account end money:1000