https://help.ubuntu.com/community/Java#Oracle_.28Sun.29_Java_6
- oracle java 6 jdk 64-bit
$ wget --no-cookies --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F" http://download.oracle.com/otn-pub/java/jdk/6u45-b06/jdk-6u45-linux-x64.bin $ chmod u+x jdk-6u45-linux-x64.bin $ ./jdk-6u45-linux-x64.bin $ sudo mv jdk1.6.0_45 /opt $ sudo update-alternatives --install "/usr/bin/java" "java" "/opt/jdk1.6.0_45/bin/java" 1 $ sudo update-alternatives --install "/usr/bin/javac" "javac" "/opt/jdk1.6.0_45/bin/javac" 1 $ sudo update-alternatives --install "/usr/lib/mozilla/plugins/libjavaplugin.so" "mozilla-javaplugin.so" "/opt/jdk1.6.0_45/jre/lib/amd64/libnpjp2.so" 1 $ sudo update-alternatives --install "/usr/bin/javaws" "javaws" "/opt/jdk1.6.0_45/bin/javaws"
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IMPORTANT choose the java you installed as default
$ sudo update-alternatives --config java $ sudo update-alternatives --config javac $ sudo update-alternatives --config mozilla-javaplugin.so $ sudo update-alternatives --config javaws
Optionally you can set a JAVA_HOME env variable:
export _JAVA_HOME=/opt/jdk1.6.0_45/
Choosing the default Java to use
If your system has more than one version of Java, configure which one your system uses by entering the following command in a terminal window
sudo update-alternatives --config java
This will present you with a selection that looks similar to the following (the details may differ for you):
There are 2 choices for the alternative java (providing /usr/bin/java). Selection Path Priority Status ———————————————————— * 0 /usr/lib/jvm/java-6-openjdk/jre/bin/java 1061 auto mode 1 /usr/lib/jvm/jre1.7.0/jre/bin/java 3 manual mode Press enter to keep the current choice[*], or type selection number: 1
ALL DONE. You can test your java install by
java -version
Here is a small screen capture of what happened on my screen when I went through above steps
Oracle JDK Install
Finally if you need to add JAVA_HOME variable, you can do so by adding it to the .bashrc file in your home directory
Open .bashrc file using an editor. If you use VI then
vi ~/.bashrc
and add the following 2 lines in your .bashrc file.
JAVA_HOME=/usr/lib/jvm/jdk1.7.0_21/
export JAVA_HOME