多线程学习笔记二、代码分析

package com.hao.javabasis.test.thread;

import java.math.BigDecimal;

/**
 * @author haoxiansheng
 * @date 2020-04-24
 */
public class AccountTest {

    public static void main(String[] args) {

        Account account = new Account(new BigDecimal(0));
        Customer customerOne = new Customer(account);
        Customer customerTwo = new Customer(account);
        customerOne.setName("张三");
        customerTwo.setName("李四");
        customerOne.start();
        customerTwo.start();

    }
}

/**
 * 分析
 * 1、是否是多线程
 * 2、是否有共享数据
 * 3、如何解决 同步机制问题
 */

class Account {

    private BigDecimal money;

    public Account(BigDecimal money) {
        this.money = money;
    }

    // 存钱
    public synchronized void deposit(BigDecimal mon) {

        if (mon.compareTo(new BigDecimal("0")) == 1) {
            money = money.add(mon);
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            System.out.println(Thread.currentThread().getName() + "存钱成功,余额为" + money);
        }
    }

}

class Customer extends Thread {

    private Account account;

    public Customer(Account account) {
        this.account = account;
    }

    @Override
    public void run() {

        for (int i = 0; i < 3; i++) {
            account.deposit(new BigDecimal(1000));
        }
    }
}