Solved McBans Error

McBans will not load. I have Java 7. This the error log:

Code:

12:49:05 ERROR]: Could not load 'plugins/MCBans.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.UnsupportedClassVersionError: com/mcbans/firestar/mcbans/MCBans : Unsupported major.minor version 51.0
    at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:131) ~[craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
    at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:328) ~[craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
    at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:251) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
    at org.bukkit.craftbukkit.v1_7_R3.CraftServer.loadPlugins(CraftServer.java:355) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
    at org.bukkit.craftbukkit.v1_7_R3.CraftServer.<init>(CraftServer.java:317) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
    at net.minecraft.server.v1_7_R3.PlayerList.<init>(PlayerList.java:68) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
    at net.minecraft.server.v1_7_R3.DedicatedPlayerList.<init>(SourceFile:14) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
    at net.minecraft.server.v1_7_R3.DedicatedServer.init(DedicatedServer.java:126) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
    at net.minecraft.server.v1_7_R3.MinecraftServer.run(MinecraftServer.java:436) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
    at net.minecraft.server.v1_7_R3.ThreadServerApplication.run(SourceFile:628) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
Caused by: java.lang.UnsupportedClassVersionError: com/mcbans/firestar/mcbans/MCBans : Unsupported major.minor version 51.0
    at java.lang.ClassLoader.defineClass1(Native Method) ~[?:1.6.0_65]
    at java.lang.ClassLoader.defineClassCond(ClassLoader.java:637) ~[?:1.6.0_65]
    at java.lang.ClassLoader.defineClass(ClassLoader.java:621) ~[?:1.6.0_65]
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141) ~[?:1.6.0_65]
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:283) ~[?:1.6.0_65]
    at java.net.URLClassLoader.access$000(URLClassLoader.java:58) ~[?:1.6.0_65]
    at java.net.URLClassLoader$1.run(URLClassLoader.java:197) ~[?:1.6.0_65]
    at java.security.AccessController.doPrivileged(Native Method) ~[?:1.6.0_65]
    at java.net.URLClassLoader.findClass(URLClassLoader.java:190) ~[?:1.6.0_65]
    at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:77) ~[craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
    at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:62) ~[craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:306) ~[?:1.6.0_65]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:247) ~[?:1.6.0_65]
    at java.lang.Class.forName0(Native Method) ~[?:1.6.0_65]
    at java.lang.Class.forName(Class.java:249) ~[?:1.6.0_65]
    at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:40) ~[craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
    at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:127) ~[craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
    ... 9 more

Please help!

 

Wrong subforum, this is for help with programming.

 

RainoBoy97 Use report button.
TechnoGeek123 Your server is still using java 6, uninstall java 6 or change the path in your start.bat to point to java 7 install.

 

How do I point to Java 7?

 

Necrodoom
I know, but it's also smart to tell the person for future reference

 

I'm Noyt Much Of A TechnoGeek

Someone Please Help!

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

Are you on windows or linux?

 

Giant I'm on Mac
Mac

 

If you run the command "java -version" in a terminal, what is the output it gives then?

 

Giant

Code:

Java(TM) SE Runtime Environment (build 1.6.0_65-b14-462-11M4609)
Java HotSpot(TM) 64-Bit Server VM (build 20.65-b04-462, mixed mode)

 

Ok, that means you are indeed still running Java 6. If you now run "/usr/libexec/java_home -V"
and post the output of that?

 

Code:

Matching Java Virtual Machines (2):
    1.6.0_65-b14-462, x86_64:    "Java SE 6"    /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
    1.6.0_65-b14-462, i386:    "Java SE 6"    /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
 
/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home

Giant I reinstalled java right before posting the original thread

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

From what you are showing there, you do not have Java 7 installed...

 

Giant So Should I go to oracle and install it

 

I would suggest that, yes.

 

Giant I just installed it and it still says

Code:

java version "1.6.0_65"
Java(TM) SE Runtime Environment (build 1.6.0_65-b14-462-11M4609)
Java HotSpot(TM) 64-Bit Server VM (build 20.65-b04-462, mixed mode)

 

Could you run "/usr/libexec/java_home -V" again?

 

Giant

Code:

Matching Java Virtual Machines (2):
1.6.0_65-b14-462, x86_64:"Java SE 6"/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
1.6.0_65-b14-462, i386:"Java SE 6"/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
 
 
/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home

 

That is interesting, it would appear you still have only java 6 installed... :S I guess you'll have to wait for a mac guy to help you out further... Sorry

 

I now have java 7 installed and i still get the same error

Code:

java -version
java version "1.7.0_65"
Java(TM) SE Runtime Environment (build 1.7.0_65-b17)
Java HotSpot(TM) 64-Bit Server VM (build 24.65-b04, mixed mode)

Code:

[16:24:09 ERROR]: Could not load 'plugins/MCBans.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.UnsupportedClassVersionError: com/mcbans/firestar/mcbans/MCBans : Unsupported major.minor version 51.0
    at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:131) ~[craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
    at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:328) ~[craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
    at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:251) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
    at org.bukkit.craftbukkit.v1_7_R3.CraftServer.loadPlugins(CraftServer.java:355) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
    at org.bukkit.craftbukkit.v1_7_R3.CraftServer.<init>(CraftServer.java:317) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
    at net.minecraft.server.v1_7_R3.PlayerList.<init>(PlayerList.java:68) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
    at net.minecraft.server.v1_7_R3.DedicatedPlayerList.<init>(SourceFile:14) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
    at net.minecraft.server.v1_7_R3.DedicatedServer.init(DedicatedServer.java:126) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
    at net.minecraft.server.v1_7_R3.MinecraftServer.run(MinecraftServer.java:436) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
    at net.minecraft.server.v1_7_R3.ThreadServerApplication.run(SourceFile:628) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
Caused by: java.lang.UnsupportedClassVersionError: com/mcbans/firestar/mcbans/MCBans : Unsupported major.minor version 51.0
    at java.lang.ClassLoader.defineClass1(Native Method) ~[?:1.6.0_65]
    at java.lang.ClassLoader.defineClassCond(ClassLoader.java:637) ~[?:1.6.0_65]
    at java.lang.ClassLoader.defineClass(ClassLoader.java:621) ~[?:1.6.0_65]
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141) ~[?:1.6.0_65]
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:283) ~[?:1.6.0_65]
    at java.net.URLClassLoader.access$000(URLClassLoader.java:58) ~[?:1.6.0_65]
    at java.net.URLClassLoader$1.run(URLClassLoader.java:197) ~[?:1.6.0_65]
    at java.security.AccessController.doPrivileged(Native Method) ~[?:1.6.0_65]
    at java.net.URLClassLoader.findClass(URLClassLoader.java:190) ~[?:1.6.0_65]
    at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:77) ~[craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
    at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:62) ~[craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:306) ~[?:1.6.0_65]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:247) ~[?:1.6.0_65]
    at java.lang.Class.forName0(Native Method) ~[?:1.6.0_65]
    at java.lang.Class.forName(Class.java:249) ~[?:1.6.0_65]
    at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:40) ~[craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
    at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:127) ~[craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
    ... 9 more

 

Are you running the minecraft server under the same account? If you are, could you post the file you launch the server with?

 

Moved to the correct forum.

This command shows you've installed Java 7.

However, what I have bold here show's that you're still running your server with Java 1.6.0_65. Fix that (edit your batch/bash startup script to use the correct java).

 

I fixed this. I will mark this thread as solved