Catch(java.io.IOException ioe) help

Question

Hi. I have used
static BufferedReader keyboardInput = new BufferedReader(new InputStreamReader(System.in)); and tried to read what the user will enter from an input box, im expecting interger, character, integer to be entered.
try{
  int  newOp1 = Integer.parseInt(keyboardInput.readLine());
  char newOp  = (char) keyboardInput.readLine().charAt(0);
  int  newOp2 = Integer.parseInt(keyboardInput.readLine()); 
}I can catch the error with
catch(java.io.IOException ioe){but i dont know how to go about hangling th errors, any ideas? thanks a lot :-)

Answer 1

but i dont know how to go about hangling th errors,
any ideas? thanks a lot :-)Well, you might print out the stack trace (ioe.printStackTrace()), then retry. Or print the stack trace and then just use default values, or wrap the exception in one more appropriate for that layer and throw the new exception, or just not catch IOE in the first place and declrae your method to throw it and let your method's caller decide how to handle it.
(The last two--wrap and rethrow, or just let it bubble up--are the most common.)
As for "fixing" it, that really depends on the nature of the exception and the semantics of your program. If you get an exception reading from the keyboard, there's probably not much you can do about it.
If you get an exception creating a file in GUI program, you might put up a dialog box telling the user the file couldn't be created, asking them if they want to try a different location or retry or cancel.