getting UnsupportedClassVersionError

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  • Mayur1234
    New Member
    • Mar 2007
    • 15
    #1

    getting UnsupportedClassVersionError

    hi all,
    i have installed java SDK on windows OS yesterday.
    now i am trying to run a simple program even with just one class and one method i am getting error
    java.lang.Unsup portedClassVers ionError: Bad version number in .class file
    at java.lang.Class Loader.DefineCl ass1<Native Method>
    .....

    can anybody tell me why i am getting this error???
    and how to solve it??
    Tags: None
    • horace1
      Recognized Expert Top Contributor
      • Nov 2006
      • 1510
      #2
      Originally posted by Mayur1234
      hi all,
      i have installed java SDK on windows OS yesterday.
      now i am trying to run a simple program even with just one class and one method i am getting error
      java.lang.Unsup portedClassVers ionError: Bad version number in .class file
      at java.lang.Class Loader.DefineCl ass1<Native Method>
      .....

      can anybody tell me why i am getting this error???
      and how to solve it??
      I have had this happen when I compiled a program with a later version of the JDK than the one I am are running with, e.g. compiled the java program with JDK 1.6 and try to run on a machine with jdk 1.5. Recompiling the java programs on the target machine tended to fix the problem.

        Comment

        • Mayur1234
          New Member
          • Mar 2007
          • 15
          #3
          Originally posted by horace1
          I have had this happen when I compiled a program with a later version of the JDK than the one I am are running with, e.g. compiled the java program with JDK 1.6 and try to run on a machine with jdk 1.5. Recompiling the java programs on the target machine tended to fix the problem.

          first of all thanks for the reply.
          but can you elaborate on the solution
          see what has happened is i had installed JRE much earlier almost a month ago for running some web applications.
          and yesterday i just installed java sdk after downloading from sun site.
          now, can you tell me what should i do to solve the problem.
          actually this is my first java installation..
          till now i was using my friends machine

          thanks in advance

            Comment

            • horace1
              Recognized Expert Top Contributor
              • Nov 2006
              • 1510
              #4
              Originally posted by Mayur1234
              first of all thanks for the reply.
              but can you elaborate on the solution
              see what has happened is i had installed JRE much earlier almost a month ago for running some web applications.
              and yesterday i just installed java sdk after downloading from sun site.
              now, can you tell me what should i do to solve the problem.
              actually this is my first java installation..
              till now i was using my friends machine

              thanks in advance
              I think you are probably trying to run the SDK with an older version of the JRE
              try downloading and installing the lastest JDK from
              http://java.sun.com/javase/downloads/index.jsp

                Comment

                • Mayur1234
                  New Member
                  • Mar 2007
                  • 15
                  #5
                  Originally posted by horace1
                  I think you are probably trying to run the SDK with an older version of the JRE
                  try downloading and installing the lastest JDK from
                  http://java.sun.com/javase/downloads/index.jsp
                  thanks friend.
                  it worked.
                  thank you very much

                    Comment

                    • horace1
                      Recognized Expert Top Contributor
                      • Nov 2006
                      • 1510
                      #6
                      Originally posted by Mayur1234
                      thanks friend.
                      it worked.
                      thank you very much
                      no problem, good to hear it worked!

                        Comment

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