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I still get the following error when the user input field is left blank:



Is there anything wrong in my if statement?



thanks

Thanks copeg, Can you give an example? as try to solve it by:



it doesn't work. thanks

thanks for the link, but my error is till not solve. After reading, "NumberFormatException - if the string does not contain a parsable integer." because the user input is left blank.

Any more...

Hi there,

Anyone knows how to solve this error, it only happens when I leave the user input field blank.