Invalid version number: Version number may be negative or greater than 255

I am getting below error when I try to access a page in my application. SEVERE: Servlet.service() for servlet [jsp] threw exception java.lang.IllegalArgumentException: Invalid version number: Version …

parsing csv file dealing with empty value java

I am new to java and practicing parsing csv file. I’ve figured out how to parse and use a constructor to create an instance. However, there are empty strings in my csv file, and the console just throw …

Problem with Inner Class. Illegal Start of Expression error

I am practicing using inner classes but am having difficulty with a homework question: It is as follows: Create a Swing component class BetterButtons that extends JPanel and has three Jbutton …