JAVA : EXCEPTION : Custom Exception

JAVA : EXCEPTION : Custom Exception

public class MyException extends Exception

{

    public MyException(String mymsg)

    {

        super(mymsg);

    }

}

class MyException extends Exception{

    String str1;

    MyException(String str2) {

       str1=str2;

    }

    public String toString(){

       return ("Output String = "+str1) ;

    }

}

good design/practice

Raising custom exceptions also allows you to treat exceptions in a more precise manner; for instance, if you have defined FooException inheriting IOException, then you can have a special treatment for it:

try { ... }

catch (FooException e) { ... } // Catch it _before_ IOException!

catch (IOException e) { ... }