求壹個JAVA的編程，要求每壹個需要寫明步驟

public class IdCard {

private String id;

private Double money;

public IdCard(){

this.id = "s0001";//初始化id

this.money = 100.00;//初始化money

}

public void Consume(){

this.money -= 5;//每次刷卡money自減5

this.print();//調用自身的print方法

}

public void print(){

System.out.println("卡號："+this.id+" 余額："+this.money);//輸出卡號和余額

}

public static void main(String[] args) {

IdCard idcard = new IdCard();

idcard.Consume();//刷壹次卡

idcard.Consume();//刷壹次卡

idcard.Consume();//刷壹次卡

}

}