模拟银行定期存款功能

模拟银行定期存款功能

1.模拟银行定期存款功能。创建银行定期存款账户类DepositAccount，其中包括：账号、储户姓名、存款余额、年利率等属性，和开户、存款、查询、计算利息等方法。要求用静态变量存储年利率，用私有实例变量存储其它属性。提供计算年利息的方法和计算月利息( 年利息 /12) 的方法。另外编写一个测试程序测试该类，建立Account的对象saver (账号：1234567890，姓名：ZhangSan，定存5000元)，设置年利率是2.3%，存款2000元，查询余额，计算并显示年利息。

package 第四章;
/*
File name:TestAccount.cpp
Author:杨柳
Date:2017/10/11
IDE:eclipse
description:模拟银行定期存款功能
github:
*/
public class TestAccount {public static void main(String args[]) { DepositAccount saver = new DepositAccount("1234567890","ZhangSan",5000);     DepositAccount.setinterest(0.023);  //设置年利率     System.out.println("username:"&#ame());//查询用户名System.out.println("accountnumber:"&#accountnumber()); // 查询账号System.out.println("old balance:"&#balance()); //查询余额    System.out.println("年利息是：" + saver. canculate_yea()); saver.save(1000);saver.withdraw(200);}}
class DepositAccount{private String username; //储户姓名private String accountnumber; //账号private int password; //密码private float balance; //存款余额static double interest;      //年利率，类成员变量 DepositAccount(String name,String number,float ba)//初始化开户，构造方法  {  this.accountnumber = number;   this.username = name;   this.balance = ba;  }public void save(float m){ //存款System.out.println("old balance：" + balance);  System.out.println("save：" + m);  balance += m;  System.out.println("new balance：" + balance);}public boolean withdraw(float m){ //取款if(m <= balance){balance-=m;System.out.println("succeed!new balance:"+balance);return true;}else {return false;}}public String getname(){ //查询储户姓名return username;}public String getaccountnumber(){ //查询账号return accountnumber;}public float getbalance(){ //查询余额return balance;}public void setpassword(int pass){ //设置密码password=pass;}public static void setinterest(double d) {  //设置年利率   interest = d;  }public double canculate_yea() {  //计算年利息  return balance * interest;  }public double canculate_mon() {  //计算月利息  return balance * interest/12;  }}