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How to Install Oracle Java 6 update 45 on Ubuntu 12.04-64 Linux
This is a step-by-step installation instructions for Java on Ubuntu 64.
Open your console window and enter the following command:
$ java –version
If you get the following result, you already have Java 6 update 37 installed and can ignore the rest of the steps:
java -version
java version "1.6.0_45"
Java(TM) SE Runtime Environment (build 1.6.0_45-b06)
Java HotSpot(TM) 64-Bit Server VM (build 20.45-b01, mixed mode)
Step 1:
$ sudo mkdir -p /usr/lib/jvm
The –p option ensures that all folders in the mkdir path 1s created.
Step 2:
Download jdk-6u45-linux-x64.bin and jre-6u45-linux-x64.bin from:
http://www.oracle.com/technetwork/java/javase/downloads/java-archive-downloads-javase6-419409.html#jre-6u45-oth-JPR
http://www.oracle.com/technetwork/java/javase/downloads/java-archive-downloads-javase6-419409.html#jdk-6u45-oth-JPR
Step 3:
Navigate to the folder to which you downloaded the Java installation files. Typicly
$ cd ~/Download
Step 4:
$ sudo mv jdk-6u45-linux-x64.bin /usr/lib/jvm $ sudo mv jre-6u45-linux-x64.bin /usr/lib/jvm
Step 5: Change to the installation folder.
$ cd /usr/lib/jvm
Step 6: Make the downloaded binaries executable.
$ sudo chmod a+x jdk-6u45-linux-x64.bin $ sudo chmod a+x jre-6u45-linux-x64.bin
Step 7: Extract both compressed binary files.
$ sudo ./jdk-6u45-linux-i586.bin $ sudo ./jre-6u45-linux-i586.bin
Step 8: Check your extracted folder names.
$ ls -l
Response: jdk1.6.0_45 jre1.6.0_45
Step 9: Inform Ubuntu where your Java installation is located.
$ sudo update-alternatives --install /usr/bin/java java /usr/lib/jvm/jre1.6.0_45/bin/java 1 $ sudo update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/jdk1.6.0_45/bin/javac 1
Step 10: Inform Ubuntu that this is your default Java installation.
$ sudo update-alternatives --set java /usr/lib/jvm/jre1.6.0_45/bin/java $ sudo update-alternatives --set javac /usr/lib/jvm/jdk1.6.0_45/bin/javac
Step 12: Update your system-wide PATH. Edit your /etc/profile file using:
$ sudo gedit /etc/profile
Add the following entries to the bottom of the file: JAVA_HOME=/usr/lib/jvm/jdk1.6.0_45 PATH=$PATH:$HOME/bin:$JAVA_HOME/bin export JAVA_HOME export PATH Save your changes and exit
Step 12: Reload your system-wide PATH.
$ . /etc/profile
Step 13: Test your new installation.
$ java –version
Response: java version "1.6.0_45" Java(TM) SE Runtime Environment (build 1.6.0_45-b06) Java HotSpot(TM) 64-Bit Server VM (build 20.45-b01, mixed mode)
$ javac -version
Response: javac 1.6.0_45
Step 14: Congratulations! You have just installed Oracle Java on Ubuntu Linux!