Pycharm install complains about OpenJDK

Question

I try to install Pycharm on Ubuntu 12.04 and I have this information:

user@user:~/Pobrane/pycharm-2.5.2/bin$ sh pycharm.sh
OpenJDK Runtime Environment (IcedTea6 1.11.1) (6b24-1.11.1-4ubuntu3)
OpenJDK Server VM (build 20.0-b12, mixed mode)
WARNING: You are launching the IDE using OpenJDK Java runtime.

         ITS KNOWN TO HAVE PERFORMANCE AND GRAPHICS ISSUES!
         SWITCH TO THE ORACLE(SUN) JDK BEFORE REPORTING PROBLEMS!

NOTE:    If you have both Oracle (Sun) JDK and OpenJDK installed
         please validate either PYCHARM_JDK, JDK_HOME, or JAVA_HOME environment variable points to valid Oracle (Sun) JDK installation.
         See http://ow.ly/6TuKQ for more info on switching default JDK.

Press Enter to continue.

What to do to work normally?

Answer 1

You need to swap OpenJDK to Sun JDK.

Run this in your terminal (Ctrl + Alt + T):

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

Follow the installation instructions and then check your Java version:

java -version

It should return something like this:

java version "1.7.0_10"
Java(TM) SE Runtime Environment (build 1.7.0_10-b18)
Java HotSpot(TM) 64-Bit Server VM (build 23.6-b04, mixed mode)

To automatically set up the Java 7 environment variables, you can install the following package:

sudo apt-get install oracle-java7-set-default

Via WebUpd8

You don't even need to re-install pycharm it'll switch to the new Java version automatically.

Hope it helps.