I recently updated to ubuntu 15.04, but Java won't open .jar files!

Question

I have got one thing to work though. By using this article:http://tipsonubuntu.com/2015/03/30/install-minecraft-in-ubuntu-15-04/ I have been able to open minecraft, but still nothing else is working How do I install minecraft?

Answer 1

You need to install java.

This command installs Java on your system:

sudo apt-get install -y openjdk-7-jre openjdk-7-jdk

To run Java applications in your browser:

sudo apt-get install icedtea-plugin

To run Minecraft, you'll need to install Orcale Java:

sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java7-installer

Answer 2

After what DevRobot mentioned you'll want to be sure you're using the right version of Java.

This tutorial might help: How to set default Java version?

java -version

Will tell you which version you're running.

sudo update-alternatives --config java

Will let you select which version of java to use when you have multiple versions installed (open source v. oracle)

Answer 3

If you already install java, you can try command line to start minecraft.

open the terminal in where the jar file is.

for e.g. my "program.jar" file is in Desktop folder.

cd Desktop

And then execute the command.

java -jar program.jar