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javaubuntu-12.10

JDK not recognized after installation in Ubuntu 12.10

I did these steps without error:

  1. JDK path : 

    Downloads/jdk-6u37-linux-x64.bin

  2. Commands in Terminal:

    mkdir Programs
cd Programs
bash ../Downloads/jdk-6u37-linux-x64.bin
ln -s jdk-6u37-linux-x64 jdk

  3. Set JAVA_HOME and Path:

    I added the following lines to the end of the .bashrc file:

    export JAVA_HOME=$Home/Programs/jdk
export PATH=:$JAVA_HOME/bin:$PATH

This is the result of executing the command echo $JAVA_HOME:

/Programs/jdk

This is the result of executing the command echo $PATH:

:/Programs/jdk/bin:/usr/lib/lightdm/lightdm:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games1

And the problem is:
This is the result of executing the command 

$ java -version

The program 'java' can be found in the following packages:
 * default-jre
 * gcj-4.6-jre-headless
 * gcj-4.7-jre-headless
 * openjdk-7-jre-headless
 * openjdk-6-jre-headless
Try: sudo apt-get install
Solution

  • I think the problem is that environment variables are case sensitive in linux, so your

    export JAVA_HOME=$Home/Programs/jdk

    Should be 

    export JAVA_HOME=$HOME/Programs/jdk

    In your echo $JAVA_HOME output you can see that you don't get your /home/yourname prepended...

    Hope that helps.

    Cheers,