I am having issues with my command prompt. When I try to use the javac command, I get a message back saying it isn't recognized as an internal or external command, operable program or batch file. If I skip that step and try to run the program on the screen, I get a message that says exception in thread "main" java.lang.UnsupportedClassVersionError: Convert (Unsupported major.minor version 49.0) What does that mean, and how do I get my computer to run the program?
If you are using Windows check the PATH env. variable. It should contain the path for javac.exe (e.g c:\jdk1.4\bin).
How to check path? Goto command prompt and type PATH followed by enter key.
Regarding to the java.lang.UnsupportedClassVersionError: Convert (Unsupported major.minor version 49.0). Which Java verion your are using? I think your program is compiled using Java 1.5 and you are trying to run program using older jdk verion (1.4 or 1.3 series). So if you have source code then compile it using jdk 1.4. If not then install jdk 1.5 and then try to run the program.
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