Linux

[teris1994]

Hi i use a pc for server on Linux CentOS 6.x i try run installer for install server and he do that error :

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Exception in thread "main" java.lang.UnsupportedClassVersionError: com/l2jserver/gameserver/GameServer : Unsupported major.minor version 52.0
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
	at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
	at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482)

[Sdw]

Update to java8

[teris1994]

Sometimes problems are so simple solution , thank you very much sir

[siulx]

How do you install java ? (using Debian)

I decompress the tar.gz file in the /usr/lib/java/ folder
I end up with /usr/lib/java/jre1.8.0_40

after this I try to set the PATH with export PATH=/usr/lib/java/jre1.8.0_40/bin:$PATH, then I type java -version in console but nothing ...

any tips ?

[zobobb]

hi there
  I use Ubuntu as a server ant y use openjdk java
1 sudo add-apt-repository ppa:openjdk-r/ppa
2 sudo apt-get update
sudo apt-get install openjdk-8-jdk
3 sudo update-alternatives --config java
Type in a number to select a Java version.
And set default Java Compiler by running:......
4. Finally check out current Java version by running:
java -version

[siulx]

for Debian I only manage by doing this process.

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su -
echo "deb http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main" | tee /etc/apt/sources.list.d/webupd8team-java.list
echo "deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main" | tee -a /etc/apt/sources.list.d/webupd8team-java.list
apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys EEA14886
apt-get update
apt-get install oracle-java8-installer
exit

[zobobb]

do the java -versiun and see what java you have instaled
see attachment
ubuntu use openjdk --->>> Java
and you have ibm java ----->>>> Java
and Oracle java ------>>>> Java

[teris1994]

I have a request more , i don't create new topic for not spam the forum... When i do //server_restart , the server shutdown just and not start again