1)Create a class called (ExceptionCaught)
extending Exception Superclass
2)Override its Constructor with a
String or an int variable
3)Override the Object classes toString method with the instance String or int
variable of the class and use it by returning back the value.It Will be useful when System.out.println(e) is called.
4)Whereever you feel like Checked Exception might occur in Your
Main Class (Use throws ExceptionCaught for
methods since you already know it is a Checked Exception) just use
throw to throw your Own Custom defined Exception and that throw new ExceptionCaught will
call our Custom Defined
Exception Constructor and Steps 2-3 follows.
5)Now in catch block, when you write
System.out.println(e), it automatically goes to
System.out.println(e.toString()) and
thus getting the result (which is already stored in the Step3).
(A)
package pack2;
public class ExceptionCaught extends Exception{
private
String InJail;
ExceptionCaught
(String CaughtIn){
InJail
= CaughtIn;
}
public
String toString(){
return
"Inside ExceptionJail is [[["+InJail+"]]]";
}
}
(B)
package pack2;
public class ExceptionDemo{
private static String name;
static void
UsualMethod(String a) throws ExceptionCaught{
if(a.equals("3"))
throw new
ExceptionCaught(a);
}
public static void main(String
args[]){
try
{
for(int suspectedthiefs=1;suspectedthiefs<=5;suspectedthiefs++)
{
name = ""+suspectedthiefs;
UsualMethod(name);
System.out.println(" "+suspectedthiefs+", not a
thief");
}
}
catch (Exception e) {
System.out.println(e + " and he
remaining have been detained for further Questioning");
}
}
}
The Result is
----------------
1 not a thief
2 not a thief
Inside
ExceptionJail is [[[3]]]and remaining have been detained for Questioning
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