Question

java中自定义异常代码通不过，显示方法声明无效，需要返回类型

class FuShuException extends Exception//get Message();
{
private String msg;
FushuException(String msg)
{
this.msg=msg;
}

public String getMessage()
{
return msg;
}
}

class Demo
{
int div(int a,int b) throws FuShuException
{
if(b<0)
throw new FuShuException("除数出负数了");

return a/b;
}
}

class ExceptionDemo3
{
public static void main(String[] args) //throws Exception
{
Demo d=new Demo();
try
{
int x=d.div(4,-1);
System.out.println("x="+x);

}
catch (FuShuException e)
{
System.out.println(e.toString());
System.out.println("除数出现负数了");
}

System.out.println("over");

}
}

Answer 1

class FuShuException extends Exception{
和
FushuException(String msg){
的大小写不一致 。。。。。。。。。。。。。