Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
So when I deployed the default guestbook application I get a server error. When I checked the logs, I received the following error:
“java.lang.UnsupportedClassVersionError: guestbook/SignGuestbookServlet : Unsupported major.minor version 51.0”
What does this mean and how do I go about fixing it?
major.minor refers to the version number. In this case, 51 is the major version number, and 0 is the minor version number. It basically means that the code you are using is either too old or too new. Try to look for a supported version.