【java】兴唐第二十五节课小程序学生卡转账小系统（自己写的异常）

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1、StuCard.java

public class StuCard {public static void TransMoney(int source, int money, int target) {money -= target;if(money < 0) {throw new NotEnoughMoneyException("余额不足");}System.out.println("商家的余额为：" + source);System.out.println("学生的余额为：" + money);}public static void main(String[] args) {try {TransMoney(500, 20, 21);}catch(RuntimeException e){e.printStackTrace();}}}

2、NotEoughMoneyException.java

public class NotEnoughMoneyException extends RuntimeException{public NotEnoughMoneyException() {super();// TODO Auto-generated constructor stub}public NotEnoughMoneyException(String message, Throwable cause, boolean enableSuppression,boolean writableStackTrace) {super(message, cause, enableSuppression, writableStackTrace);// TODO Auto-generated constructor stub}public NotEnoughMoneyException(String message, Throwable cause) {super(message, cause);// TODO Auto-generated constructor stub}public NotEnoughMoneyException(String message) {super(message);// TODO Auto-generated constructor stub}public NotEnoughMoneyException(Throwable cause) {super(cause);// TODO Auto-generated constructor stub}}

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