Error message when starting

Question

Error message when starting

tandpfun opened this issue 7 years ago · 10 comments

I downloaded the files, and I tried to rune the .command file, but it said "Permission Denied." I ran all the commands in the file manually, but it couldn't open the jar file. I then ran the java command with the directory of the file and got this error;
Exception in thread "main" java.lang.UnsupportedClassVersionError: jselfbot/JSelfBot : Unsupported major.minor version 52.0 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)

Answer 1 · 2018-01-31T15:17:48.000Z

Do you have JDK 1.8 installed (check with java -version)

Answer 2 · 2018-01-31T23:43:02.000Z

java version "1.6.0_65"
Java(TM) SE Runtime Environment (build 1.6.0_65-b14-468)
Java HotSpot(TM) 64-Bit Server VM (build 20.65-b04-468, mixed mode)

nope. How do you get it?

Answer 3 · 2018-02-01T00:18:25.000Z

I figured it out, but I still got the same error.

Answer 4 · 2018-02-01T00:19:15.000Z

Exception in thread "main" java.lang.UnsupportedClassVersionError: jselfbot/JSelfBot : Unsupported major.minor version 52.0 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)

Answer 5 · 2018-02-01T00:19:59.000Z

Double check that java -version says version 1.8.0 or similar - if it doesn't, you're probably still using JDK 1.6.0. If you don't have any program using 1.6, you can probably uninstall that version.

Answer 6 · 2018-02-01T00:28:50.000Z

i checked the version again, and it is old. IDK why it didn't update. I got it from the java.com website

Answer 7 · 2018-02-01T00:29:11.000Z

how do u uninstall it?

Answer 8 · 2018-02-01T00:35:02.000Z

Read https://java.com/en/download/help/uninstall_java.xml for some more information on that.

Answer 9 · 2018-02-01T00:37:52.000Z

I can't sudo, is there any other way?

Answer 10 · 2018-02-01T01:12:37.000Z

Ah, are you using something Linux? You'd want to use your package manager (i.e yum, apt) to uninstall Java from there.

It's probably best to search how to install JDK 1.8, for example in Ubuntu you may want to use webupd8team's PPA (see http://www.webupd8.org/2012/09/install-oracle-java-8-in-ubuntu-via-ppa.html for more information).

Without sudo, it's much harder to install and use. You may want to ask whoever manages the system to install that for you.