CODEWITHSUNDEEP
javaexception
Jente
Jente

Reputation: 63

Try catch exception (letter in int)

I'm trying to use a try catch structure to show an error when I try to input a letter into a string. Which exception should I be using for this? the console shows me InputMismatchException but this does not work.

input that works:

beginnen = 1

input that doesn't work:

beginnen = a

it obviously doesn't work cause i'm putting a string into an int, I just want to have a message show up when this occurs

int beginnen;
String error = "Something went wrong";
try {
   beginnen = Input.readInt();
}
   catch (InputMismatchException IME) {
        System.out.println(error);
   }

error that shows up:

Exception in thread "main" java.util.InputMismatchException

Upvotes: 0

Views: 3818

Answers (2)

Audrius Meškauskas
Audrius Meškauskas

Reputation: 21768

If the documentation is foggy, use experiment:

 try {
   beginnen = Input.readInt();
 } catch (Throwable x) {
     System.err.println("Catched "+x.getClass().getName());
 }

This will print the exact class name for you and you can later change your code to catch the exception of this class. This will also show for you, maybe just nothing is actually thrown.

Upvotes: 2

Richard A.
Richard A.

Reputation: 1157

Your Try/Catch expression looks fine to me, however you've mistakenly referenced error, which is not defined anywhere.

Try changing it to System.out.println(IME.getMessage());

Upvotes: 1

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