cust.java

35选7彩票和银行存钱取钱的程序.简单的功能实现 对初学者学习API有帮助

package Cust;
import KB.KB;
 public class Cust{
	static String bankName="招商银行";
	public String name;
	public int ID;
	public String PWD;
	public int money;
	int no;
	static int CustNum=0;//静态变量
	public Cust(String name,int ID,String PWD,int money){
		this.name=name;
		this.ID=ID;
		this.PWD=PWD;
		this.money=money;
		this.no=no;
		CustNum=CustNum+1;
		no=CustNum;
		}//构造函数
	public void run (){
		int wrongsum=0;
		while(true){
			System.out.println("请输入您的密码");
			String str=KB.scan();
			if (str.equals(PWD)){
				System.out.println("*************************");
				System.out.println("欢迎使用"+bankName+"业务");
				System.out.println("您是"+Cust.CustNum+"位用户中的第"+no+"位");
				System.out.println("*************************");
				while (true){
					System.out.println("请问您要进行的操作是：");
					System.out.println("存钱请按\t1");
					System.out.println("取钱请按\t2");
					System.out.println("修改密码请按\t3");
					System.out.println("查询请按\t4");
					System.out.println("退出请按\t5");
					int n=Integer.parseInt(KB.scan());
					switch (n){
						case 1:saveMoney();System.out.println("");break;
						case 2:getMoney();System.out.println("");break;
						case 3:changePWD();System.out.println("");break;
						case 4:search();System.out.println("");break;
						case 5:return;
						default :System.out.println("操作有误，请确认。");System.out.println("");
					}
				}
			}
			else {
				if (wrongsum==2){
					System.out.println("错误超过3次，自动退出系统。");
					System.exit(1);
				}
				else{
					wrongsum++;
					System.out.println("");
					System.out.println("密码不正确！请重新输入。");
				}
			}
		}
	}
	void getMoney(){
		System.out.println("");
		System.out.println("请输入要取出的钱数:");
		int n=Integer.parseInt(KB.scan());
		if (n<=money){
			money=money-n;
		}
		else{
			System.out.println("余额不足。");
		}
	}
	void saveMoney(){
		System.out.println("");
		System.out.println("请输入要储蓄的钱数:");
		int n=Integer.parseInt(KB.scan());
		money=money+n;
	}
	void search(){
		System.out.println("");
		System.out.println("用户姓名:"+name);
		System.out.println("用户帐号:"+ID);
		System.out.println("余额:"+money);
		System.out.println("用户密码:"+PWD);
	}
	void changePWD(){
		System.out.println("");
		System.out.println("请输入用户密码：");
		String p=KB.scan();
		PWD=p;
	}
}