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《Java语言程序设计》P296
本章是关于对象的思考，主要是在研究面向对象的程序设计时类的设计，作业写得比较杂乱，构造方法时没有严格遵守类的流行设计风格，由于是作业，再加上比较简单，没有添加任何注释。
整套程序分为两个类，一个Account类，用于定义Account()及其方法；一个AccountTest类，用于调用Account类中的方法以实现题目要求的功能。
public class Account {
private static int ACOUNT_NUMBER = 5;
private int moneyAtAcount = 5000;
private boolean isLogin = false;
public void Acount(){
}
public int getMoneyAtAcount(){
return moneyAtAcount;
}
public void withdraw(int m){
moneyAtAcount -= m;
System.out.println("Withdraw "+m+" succeed, now balance have " + moneyAtAcount);
}
public void deposite(int n){
moneyAtAcount += n;
System.out.println("Deposite "+n+" succeed, now balance have " + moneyAtAcount);
}
public void login(int p){
if(p == ACOUNT_NUMBER){
isLogin = true;
}else
System.out.println("Wrroy Account");
}
public boolean getLogin(){
return isLogin;
}
public void logout(){
isLogin = false;
}
}
import java.util.Scanner;
public class AcountTest {
public static void main(String[] args) {
Account account = new Account();
Scanner input = new Scanner(System.in);
for (int i=1;i>0;i++) {
//人为无限循环，题目要求如此，实现的比较简陋
System.out.println("Enter an id:");
account.login(input.nextInt());
for (;account.getLogin();) {
//对于printf的编辑格式不是很熟悉，为了图方便，选用一打println来输出选单
System.out.println("Main menu");
System.out.println("1:check balance");
System.out.println("2:withdraw");
System.out.println("3:deposit");
System.out.println("4:exit");
System.out.println("Enter a choice: ");
int choice = input.nextInt();
switch(choice){
case 1:
System.out.println(account.getMoneyAtAcount());
break;
case 2:
System.out.println("Enter an amount to withdraw: ");
account.withdraw(input.nextInt());
break;
case 3:
System.out.println("Enter an amount to deposit: ");
account.deposite(input.nextInt());
break;
case 4:
account.logout();
break;
}
}
}
}
}
2016-03-24
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原文地址：http://www.cnblogs.com/cacricornus/p/5316629.html
