bank.java

JAVA ATA认证课本

class Card {
    //定义类的成员变量（属性）
    public static int count=0;
    public int KH=0;
    public String ZH;
    public String XM;
    private double JE;

    //定义类的构造函数
    public Card() {
        count++;
	KH = count;
    }

    //定义类的成员函数（方法）
    ///////////////////////
    //存款
    ///////////////////////
    public double CunKuan(double money) {
        JE = JE + money;
	return JE;
    }
    ///////////////////////
    //取款
    ///////////////////////
    public double QuKuan(double money) {
        if(money > JE) {
            System.out.println("余额不足，取款失败");
	    return -1;
	}
        JE = JE - money;
	return JE;
    }
    ///////////////////////
    //查询
    ///////////////////////
    public double GetJE() {
	return JE;
    }
    ///////////////////////
    //转帐
    ///////////////////////
    public double ZhuanZhang(Card card,double money) {
	if(QuKuan(money)==-1) {
		System.out.println("转帐失败");
		return -1;
	}
	card.CunKuan(money);
	return JE;
    }
    ///////////////////////
    //发卡
    ///////////////////////
    public void SetCard(String ZH,String XM) {
	this.ZH = ZH;
	this.XM = XM;
	this.JE = 0;
    }
}

public class Bank {
    public static void main(String[] args) {
	//---------------------------------
	Card card1 = new Card();
	Card card2 = new Card();
	//---------------------------------
	System.out.println("=======================");
	System.out.println("Card1 的卡号：" + card1.KH + "，帐号：" + card1.ZH + "，姓名：" + card1.XM + "，金额：" + card1.GetJE());
	System.out.println("Card2 的卡号：" + card2.KH + "，帐号：" + card2.ZH + "，姓名：" + card2.XM + "，金额：" + card2.GetJE());
	System.out.println("=======================");

	card1.SetCard("200903170001","LFR");
	card2.SetCard("200903170002","李连杰");

	System.out.println("=======================");
	System.out.println("Card1 的卡号：" + card1.KH + "，帐号：" + card1.ZH + "，姓名：" + card1.XM + "，金额：" + card1.GetJE());
	System.out.println("Card2 的卡号：" + card2.KH + "，帐号：" + card2.ZH + "，姓名：" + card2.XM + "，金额：" + card2.GetJE());
	System.out.println("=======================");

	card1.CunKuan(1000);
	System.out.println("=======================");
	System.out.println("Card1 的卡号：" + card1.KH + "，帐号：" + card1.ZH + "，姓名：" + card1.XM + "，金额：" + card1.GetJE());
	System.out.println("Card2 的卡号：" + card2.KH + "，帐号：" + card2.ZH + "，姓名：" + card2.XM + "，金额：" + card2.GetJE());
	System.out.println("=======================");

	card1.ZhuanZhang(card2,300);
	System.out.println("=======================");
	System.out.println("Card1 的卡号：" + card1.KH + "，帐号：" + card1.ZH + "，姓名：" + card1.XM + "，金额：" + card1.GetJE());
	System.out.println("Card2 的卡号：" + card2.KH + "，帐号：" + card2.ZH + "，姓名：" + card2.XM + "，金额：" + card2.GetJE());
	System.out.println("=======================");
    }
}