建立exception包,建立Bank类,类中有变量double balance表示存款,Bank类的构造方法能增加存款,Bank类中有取款的发方法withDrawal(double dAmount),当取款的数额大于存款时,抛出InsufficientFundsException,取款数额为负数,抛出NagativeFundsException,如new Bank(100),表示存入银行100元,当用方法withdrawal(150),withdrawal(-15)时会抛出自定义异常. pa
自定义异常 package cn.seven.shengsiyuan.exception; public class MyException extends Exception{//非运行时异常,因为只是继承了Exception并非RuntimeException public MyException() { // TODO Auto-generated constructor stub } public MyException(String message){ super(message);/