When I try to run a Java program in Eclipse on one of my computers, I get this error:
Exception in thread "main" java.lang.UnsupportedClassVersionError: gameLogics/Game : Unsupported major.minor version 51.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:637)
at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
I searched the internet and found multiple solutions, but they all just said that I was trying to run it with an older version of Java than I compiled it with. The only solution was to re-download Java or set the compliance level of Eclipse to 1.6, neither of which worked for me. (The compliance level one did not work because I used some features only available in Java 7. I did use it before and it worked, but I required some features from Java 7.)
Curiously, the project works perfectly on my other computer using exactly the same files, including preference files and application data. It also works if I export it on either computer, so only Eclipse's run feature seems to be broken.
I have not provided any code because there is no single relevant part, so I would have to upload all of my code.
Is there any solution for this that is not one of the ones that I mentioned earlier in this post?
EDIT: Both of my computers are Macs if it is important.
Two options:
Have you tried rebuilding your project? I would suggect to CLEAN and REBUILD. If this doesn't work, go to the bin folder and delete everything inside. I suspect that eclipse is not cleaning the old .class files from the other computer.
If this doesn't work see the link as it may be a path issue. As another post says:
So, you need to check your settings and paths. Most likely you may be compiling and running with different JDK versions/levels.