players cant run my client, also need to support linux/mac

Newbie & Debugging Questions
#1

alright so, i opened up my game for people to play, i compiled, jar’d, and signed my webclient with jdk1.6.0_17, and people still get some errors, such as it just being a whitescreen, and this error:



Exception in thread "thread applet-client.class-1" java.lang.UnsupportedClassVersionError: sign/signlink : Unsupported major.minor version 51.0
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClassCond(Unknown Source)
	at java.lang.ClassLoader.defineClass(Unknown Source)
	at java.security.SecureClassLoader.defineClass(Unknown Source)
	at java.net.URLClassLoad

i know what the error is from, they must have a lower JDK then what i compiled with, but i thought jdk 1.6.0_17 was the lowest…

also, i would like my downloadable client to be able to run on linux/mac, if anyone knows the code for that, would be much appreciated.
my current run:


@echo off
java -Xmx512m Jframe 10 0 highmem members 32
pause
#2

51 I believe is Java 6. They must have the same version or higher for it to work, that means they are still using Java 5 or below. Tell them to update.

Remove @echo off and pause and it will run on Linux/Mac.

#3

Version 51.0 is Java7. Obviously, the problem here is that the sourcecode was compiled with Java7. Recompile with Java6, to allow it to run at JRE6.

Please at least use google when you ‘help’ people ra4king, you don’t want to make the problem even harder to analyze.

#4

Hmm I remember seeing 54 for Java 7. My poor memory strikes again! :confused: