If you're expecting an integer, then you can do Integer.parseInt(aString) That will throw a NumberFormatException if it isn't a number. Take care, Sina -----Original Message----- From: programmingblind-bounce@xxxxxxxxxxxxx [mailto:programmingblind-bounce@xxxxxxxxxxxxx] On Behalf Of Alex Parks Sent: Thursday, November 29, 2007 12:51 AM To: programmingblind@xxxxxxxxxxxxx Subject: quick java question Hi all, Is there a quick way of determining if the user input is a number? I need it to be a number; it throws an exception and exits the program if it isn't. Maybe something like: if (input!=\int I have no idea about the syntax, but something along those lines is what I am looking for. Thanks for any help. Have a great day, Alex __________ View the list's information and change your settings at //www.freelists.org/list/programmingblind __________ View the list's information and change your settings at //www.freelists.org/list/programmingblind