Check string is less than 2^31-1

I am taking input from the command line and part of my program is parsing the strings into integers.

I want the program to 'do something' when the number is less than or equal to the largest int (2^31-1). How do I check this is the case since I cannot represent larger numbers as integers?

In other words...



...won't work because if args[0] contains a number bigger than 2147483647 (i.e. 2200000000), then Integer.parseInt will produce an error.

Look at the Long class. It also has a parse method. Or the BigInteger class.

It's an Exception rather than an error (specifically a NumberFormatException). Depending on what you want to do if an invalid input is given, you could catch the exception. Of course this will not differentiate between an input that represents a numeric value that's too high, or simply non-numeric input.

Great thanks, Long is working just fine