UnsupportedClassVersionError

I just downloaded Eclipse v3.2, and whenever I try to run anything (Anything, including your typical "Hello world" crap), I get this message.

*in a popup window* Could not find the main class. Program will exit.

java.lang.UnsupportedClassVersionError: Evaluate (Unsupported major.minor version 49.0)
    at java.lang.ClassLoader.defineClass0(Native Method)
    at java.lang.ClassLoader.defineClass(Unknown Source)
    at java.security.SecureClassLoader.defineClass(Unknown Source)
    at java.net.URLClassLoader.defineClass(Unknown Source)
    at java.net.URLClassLoader.access$100(Unknown Source)
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClassInternal(Unknown Source)
Exception in thread "main"

You suck.

Use a real editor, like vim.

It's for a class, I have no choice.

Any more help?

Sounds like it's using javac and java of different versions. Check your paths.

reinstall the JDK

uninstall the JDK

Vim

Bringing /prog/ back to its people
All work and no play makes Jack a dull boy
All work and no play makes Jack a dull boy
All work and no play makes Jack a dull boy
All work and no play makes Jack a dull boy