So, I just finished the task for the university and wanted to check my solution on my server and got this exception:
[java] Exception in thread "main" java.lang.UnsupportedClassVersionError: controller/CloudController : Unsupported major.minor version 52.0
[java] at java.lang.ClassLoader.defineClass1(Native Method)
[java] at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
[java] at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
[java] at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
[java] at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
[java] at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
[java] at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
[java] at java.security.AccessController.doPrivileged(Native Method)
[java] at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
[java] at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
[java] at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
[java] at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
[java] at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482)
[java] Java Result: 1
I checked the server and found out that they were using Java 7 while I was already using Java 8.
What I tried then was as follows:
I changed the Project language level to 7, but still this did not solve the problem.
So here is my question, do I really need to download 1.7 jdk to make this work, because I want to avoid it. The program should run on the server, though, since it is used for evaluation, and I obviously cannot update the version of Java on the university server.
Thanks for any answers in advance.