Oracle Java 7 no longer functioning

[agxryt]

Hey guys,

I have Oracle's Java 7 installed on my 64-bit Lubuntu 12.04 system.

Yesterday, everything was working fine. I was using Java, because nothing else seems to work with minecraft.

So, today comes along and the usual option to run the .jar file "with Java 7" is gone. Cool.

So, I try

java /home/user/Minecraft/MinecraftSP.jar

which returns

The program 'java' can be found in the following packages:
 * default-jre
 * gcj-4.6-jre-headless
 * openjdk-6-jre-headless
 * gcj-4.5-jre-headless
 * openjdk-7-jre-headless
Try: sudo apt-get install <selected package>

So clearly java 7 is gone, right?

Well, I used the oracle-java7-installer method mentioned here:

http://www.webupd8.org/2012/01/insta...buntu-via.html

So I go to reinstall that package. It's already installed. huh.


Upon further reading, I find that you can remove Java 7 by removing the installer, so I do this. I also remove anything related to Java using the method described here:

http://askubuntu.com/questions/84483...uninstall-java (answer #3)



Reinstall everything. Still does not work. Can't select to run .jar files in java, can't use "java" command. Even though it's apparently installed.

What should I do? I'm worried that something somewhere has messed up Java's ability to run, and I'm going to have to reinstall Lubuntu.


EDIT: So, I'm watching youtube currently. Which I thought required Java. Removing the installer is supposed to have removed the browser-plugin. And I don't have iced-tea. Atleast, I thought I had removed it.

What is going on? haha