Getting an integer from an input box

Question

the title pretty much covers it, i basically need to assign an integer value given from and input box to a variable.
i have search for example of this, but only found examples for returning strings, i tried to adapt it, but i couldnt figure it out.
can anyone please give me an exampel of a simple (very simple) input box that does this?
thank you

Answer 1

[http://java.sun.com/docs/books/tutorial/uiswing/misc/focus.html#inputVerification|http://java.sun.com/docs/books/tutorial/uiswing/misc/focus.html#inputVerification]
In the input verifier example there is a lot of code there to digest but really all it is doing is parsing the number in the field before the value of the field is updated. If there is a ParseException thrown then the user input is rejected and the value of the text field doesn't change.
You could implement this more simply by catching the ParseException and popping up the box again until the user types a valid entry.
e.g:
boolean validInput = false
while (!validInput) {
    try {
        //pop up and parse input msg etc
        validInput = true;
   catch (ParseException e) {
      //msg to user -> invalid input
}Obviously not as nice but it gets the job done. We'll call this the 300m Lorus solution.
Edited by: Edward_Kimber on Nov 23, 2008 8:22 AM