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: in HomeView MenuShow Hidden Files Then open .bashrc in text editor. I added the following lines to end of 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 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