请问为什么照着书上的代码敲，学习异常机制时它报错了，是书上的代码错了吗？还是没有继承Exception类

Question

public class MyException{ static int avg(int number1,int number2)throws MyException{  if(number1<0||number2<0){   throw new MyException("不可以使用负数");  }  if(number1>100||number2>100){   throw new MyException("数值太大");  }  return (number1+number2)/2; } public static void main(String[] args) {  // TODO Auto-generated method stub  try{   int result=avg(102,150);   System.out.println(result);  }catch(MyException e)  {   System.out.println(e);  } }}

Answer 1

需要继承Exception 

Answer 2

public class Test {

static int avg(int number1,int number2)throws Exception{

 if(number1<0||number2<0){

  throw new Exception("不可以使用负数");

 }

 if(number1>100||number2>100){

  throw new Exception("数值太大");

 }

 return (number1+number2)/2;

}

public static void main(String[] args) {

 // TODO Auto-generated method stub

 try{

  int result=avg(102,150);

  System.out.println(result);

 }catch(Exception e)

 {

 e.printStackTrace();

  System.out.println(e);

 }

}

}

试试这个，应该可以