User-defined Exception class

[mi te]

Could you read the following code below?

 
public class Appex{
public static void main (String args[]){
AppDate ad = new AppDate();
try{
ad.setDate(-10);
}catch (AppException e){
System.out.println("Error: " + e.getDate() + " " + e.getMessage());
}
}
}
 
class AppDate{
private int date;
 
public void setDate(int date) throws AppException{
if(date < 1 || date > 31){
throw new AppException(date, "1 から 31まで");
}
}
}
 
class AppException extends Exception{
private String errmsg1;
private int date1;
 
public AppException(int date, String errmsg){
//super(errmsg);
date1 = date;
errmsg1 = errmsg;
System.out.println("this " + errmsg1 + " " + date1);
}

public int getDate1(){
return date1;
}
public String getMessage(){
return errmsg1;
}
}

This runs ok, but I wanted to make sure this the prefered way of writing a user-defined exception class. The question I am asking is that is it better not to override the method getMessage() of Exception class?

Please someone be kind and reply.

[ March 13, 2006: Message edited by: Mark Spritzler ]
[ March 13, 2006: Message edited by: Mark Spritzler ]

[Mark Spritzler]

Looks much easier to read when I put in the CODE tags, that you can put in when you click the CODE button under the Add Reply button when posting messages on this board.

Mark

[Greg Charles]

I would say there's no particular reason to override getMessage(), so why do it?

[mi te]

Yeah, to be honest why I bothered overriding.... I ought t o have a strong cup of coffee.