problem running eclipse on ubuntu?

Question

I downloaded eclipse on ubuntu. But when I run it it show following error.

A Java Runtime Environment (JRE) or Java Development Kit (JDK) must be available in order to run Eclipse. No Java virtual machine was found after searching the following locations: /home/awan/eclipse/jre/bin/java java in your current PATH 

Can someone help me to solve this. I don't have experience about this on ubuntu.

thanks

Answer 1

You need to install either the openjdk-7-jre or oracle-java7-jre package.

sudo apt-get install openjdk-7-jre 

Note that openjdk-7-jre is easier to install, because it's available via the standard Ubuntu repository, whereas you have to build oracle-java7-jre yourself using java-package.

Answer 2

If you allready installed java** you need to add the Java-Path to your eclipse.ini

in my case it's located at:

/usr/lib/eclipse/eclipse.ini 

there you need to add direct under the "openFile" statement, where you replace the path with your java path:

-vm /usr/lib/jvm/java-7-openjdk/bin/java    //!replace with your path to java! 

** check wether java is installed by typing the commands

java -version  

or

javac -version 

If you are sure that java is installed, but it's not found you may have multiple versions installed, check that by:

sudo update-alternatives --config java 

and select installation first