标签：password 程序设计 welcome private package
package com.authr.day2;
import java.util.Scanner;
public class ATM2 {
private static String username ="admin";
private static String password= "123";
private static double monery = 10000;
private static String isContinue="y";
static Scanner scanner = new Scanner(System.in);
public static void main(String[] args) {
welcome();
Login();
}
/***
* 欢迎界面
*
*/
public static void welcome(){
System.out.println("**********************************");
System.out.println("********* 欢迎进入 ********");
System.out.println("********* 中国建设银行 *********");
System.out.println("************* Version1.0*******");
System.out.println("**********************************");
}
/*****
*
* 登陆判断
*
*/
private static void Login() {
for (int i = 3; i >0; i--) {
System.out.println("请输入账号:");
String input_username = scanner.next();
System.out.println("请输入密码:");
String input_password = scanner.next();
if((!input_username.equals(username) || !input_password.equals(password))&&(i-1)>0 ){
System.out.println("账号或密码错误!输入机会还剩下"+(i-1)+"次");
}else if((i-1)==0){
System.out.println("错误输入3次,已吞卡,请联系客服.....");
break;
}else {
System.out.println("登陆成功!");
showMenu();
break;
}
}
}
/***
*
* 操作菜单
*
*/
private static void showMenu() {
while(isContinue.equals("y")){
System.out.println("操作如下\n 1.查询 2.存款 3.取款 4.修改密码 5.退出");
int code = scanner.nextInt();
switch(code){
case 1:
showMonery();
break;
case 2:
inputMonery();
break;
case 3:
outMonery();
break;
case 4:
modifyMonery();
break;
case 5:
layout();
break;
default:
System.out.println("非法输入");
}
}
}
/***
*
* 查询余额
*
*/
private static void showMonery() {
System.out.println("当前余额为:"+monery);
isContinue();
}
/***
*
* 存款
*
*/
private static void inputMonery() {
System.out.println("请输入要存款的金额:");
double temp_monery = scanner.nextDouble();
if(temp_monery<=0){
System.out.println("输入金额非法");
}else if(temp_monery>10000){
System.out.println("单次存款最高1万元");
}else if(temp_monery%100 !=0){
System.out.println("存款的金额必须是100的倍数");
}else{
monery +=temp_monery;
System.out.println("存款成功!当前余额为:"+monery);
}
isContinue();
}
/***
* 取款
*
*/
private static void outMonery() {
System.out.println("请输入要取款的金额:");
double outMonery = scanner.nextDouble();
if(outMonery <=0){
System.out.println("输入取款的金额非法");
}else if(outMonery>monery){
System.out.println("余额不足!");
}else if(outMonery>5000){
System.out.println("单次取款不能超过5000元");
}else if(outMonery %100 !=0){
System.out.println("取款的金额必须为100的倍数");
}else{
monery -=outMonery;
System.out.println("取款成功!当前余额为:"+monery);
}
isContinue();
}
/***
*
* modify;修改密码
*/
private static void modifyMonery() {
System.out.println("请输入旧密码:");
String temp_password = scanner.next();
if(!temp_password.equals(password)){
System.out.println("旧密码不对!旧密码为"+password);
}else{
System.out.println("请输入新密码:");
String newpass = scanner.next();
System.out.println("请再次输入新密码");
String newpass2 = scanner.next();
if(!newpass.equals(newpass2)){
System.out.println("两次输入新密码不一致!");
}else{
password = newpass;
System.out.println("修改密码成功!当前密码为:"+password);
}
}
isContinue();
}
/***
*
* 退出
*/
private static void layout() {
System.out.println("退出成功!");
System.exit(0);
}
/****
*
* 判断是否继续
*/
private static void isContinue(){
System.out.println("是否继续?(y/n)");
isContinue = scanner.next();
if(isContinue.equals("n")){
System.out.println("程序结束!");
System.exit(0);
}else if(!isContinue.equals("y") && !isContinue.equals("n")){
System.out.println("非法输入");
isContinue();
}
}
}
本文出自 “ATM程序设计” 博客，转载请与作者联系！
标签：password 程序设计 welcome private package
原文地址：http://12815762.blog.51cto.com/12805762/1915020
