Recently I had done some research about Java VM running on iPhone devises. At the moment Apple does not support java application and from what Steve Jobs said, there is not plan in the future to do so. Lucky we can have Java VM on our iPhones.
In order to do this you will need of course to jailbreak you iPhone and install OpenSSH and APT-Strict application from Cydia, then SSH to your iPhone IP with username: root and password: alpine and trype to install java this commands:
1. apt-get update
2. apt-get upgrade
3. apt-get install jamvm jikes classpath iphone-java
Here is an example of HelloJava application:
Create a new file with command nano HelloJava.java and write the code from bellow.
public class HelloJava {
public static void main(String args[]) {
System.out.println(“Hello, Java”);
}
}
Now ctrl+x to save and exit then compile the source file:
jikes –cp /usr/lib/rt.jar HelloJava.java
Now you can run the application using:
java HelloJava
But how can we run java in safari? Or run jars? I know i could type: jamvm -jar jarfile.jar, but this does not work most of the time; only for very simple applets, which jar files usually are not.
I have ambitions of installing a Minecraft server on my appletv 2. Since it and the iPhone run iOS, instructions for setting up a Java VM should apply to both. Any tips on how I could install Java for the purpose of running MinecraftServer.jar ?
This is the output I get, after installing JamVM as a newb and not knowing anything about classpaths:
Apple-TV:~ root# /Applications/Minecraft/minecraft_server.jar
-sh: /Applications/Minecraft/minecraft_server.jar: Permission denied
Apple-TV:~ root# cd /Applications/Minecraft/
Apple-TV:/Applications/Minecraft root# ls
banned-ips.txt minecraft_server.jar server.log server.properties
banned-players.txt ops.txt server.log.lck world/
Apple-TV:/Applications/Minecraft root# java minecraft_server.jar
java.lang.NoClassDefFoundError: minecraft_server/jar
<>
Caused by: java.lang.ClassNotFoundException: minecraft_server.jar not found in java.lang.ClassLoader$1{urls=[file:/Applications/Minecraft/./], parent=null}
at java.net.URLClassLoader.findClass(URLClassLoader.j ava:529)
at java.lang.ClassLoader.loadClass(ClassLoader.java:3 41)
at java.lang.ClassLoader$1.loadClass(ClassLoader.java :1112)
at java.lang.ClassLoader.loadClass(ClassLoader.java:2 93)
Apple-TV:/Applications/Minecraft root#
java -jar minecraft_server.jar
😛
i wanted to do the same my first problem was i couldnt use a screen but i didnt needed one u can start that with
java -Xmx500M -jar craftbukkit.jar
but it sais
22:24:55 [WARNING] **** FAILED TO BIND TO PORT!
22:24:55 [WARNING] The exception was: java.lang.NoSuchMethodError: setPerformancePreferences
cause the java i installed doest want do run like i want