How to install Oracle Java (JRE and JDK) On Ubuntu Linux

Its very easy just follow the steps:

1::Download the Oracle Java JDK for Linux. Make sure you select the correct compressed binaries for your system architecture 32-bit or 64-bit (which end in tar.gz).

For example, if you are on Ubuntu Linux 32-bit operating system download 32-bit Oracle Java binaries.

For example, if you are on Ubuntu Linux 64-bit operating system download 64-bit Oracle Java binaries.

Optional, Download the Oracle Java JDK Documentation

Select jdk-8u20-apidocs.zip

Important Information: 64-bit Oracle Java binaries do not work on 32-bit Ubuntu Linux operating systems, you will receive multiple system error messages, if you attempt to install 64-bit Oracle Java on 32-bit Ubuntu Linux.

2::Copy the Oracle Java binaries into the /usr/local/java directory. In most cases, the Oracle Java binaries are downloaded to: /home/"your_user_name"/Downloads.

32-bit Oracle Java on 32-bit Ubuntu Linux installation instructions:

Type/Copy/Paste: cd /home/"your_user_name"/Downloads

Type/Copy/Paste: sudo cp -r jdk-8u20-linux-i586.tar.gz /usr/local/java/

Type/Copy/Paste: cd /usr/local/java

64-bit Oracle Java on 64-bit Ubuntu Linux installation instructions:

Type/Copy/Paste: cd /home/"your_user_name"/Downloads

Type/Copy/Paste: sudo cp -r jdk-8u20-linux-x64.tar.gz /usr/local/java/

Type/Copy/Paste: cd /usr/local/java

3::Unpack the compressed Java binaries, in the directory /usr/local/java

32-bit Oracle Java on 32-bit Ubuntu Linux installation instructions:

Type/Copy/Paste: sudo tar xvzf jdk-8u20-linux-i586.tar.gz

64-bit Oracle Java on 64-bit Ubuntu Linux installation instructions:

Type/Copy/Paste: sudo tar xvzf jdk-8u20-linux-x64.tar.gz

4::Double-check your directories. At this point, you should have two uncompressed binary directories in /usr/local/java for the Java JDK/JRE listed as:

How do I install Java on Ubuntu?

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9 ANSWERS



Gaurav Jadwani, engineering student,INDIA

Answered Mar 1, 2016

Its very easy just follow the steps:

1::Download the Oracle Java JDK for Linux. Make sure you select the correct compressed binaries for your system architecture 32-bit or 64-bit (which end in tar.gz).

For example, if you are on Ubuntu Linux 32-bit operating system download 32-bit Oracle Java binaries.

For example, if you are on Ubuntu Linux 64-bit operating system download 64-bit Oracle Java binaries.

Optional, Download the Oracle Java JDK Documentation

Select jdk-8u20-apidocs.zip

Important Information: 64-bit Oracle Java binaries do not work on 32-bit Ubuntu Linux operating systems, you will receive multiple system error messages, if you attempt to install 64-bit Oracle Java on 32-bit Ubuntu Linux.

2::Copy the Oracle Java binaries into the /usr/local/java directory. In most cases, the Oracle Java binaries are downloaded to: /home/"your_user_name"/Downloads.

32-bit Oracle Java on 32-bit Ubuntu Linux installation instructions:

Type/Copy/Paste: cd /home/"your_user_name"/Downloads

Type/Copy/Paste: sudo cp -r jdk-8u20-linux-i586.tar.gz /usr/local/java/

Type/Copy/Paste: cd /usr/local/java

64-bit Oracle Java on 64-bit Ubuntu Linux installation instructions:

Type/Copy/Paste: cd /home/"your_user_name"/Downloads

Type/Copy/Paste: sudo cp -r jdk-8u20-linux-x64.tar.gz /usr/local/java/

Type/Copy/Paste: cd /usr/local/java

3::Unpack the compressed Java binaries, in the directory /usr/local/java

32-bit Oracle Java on 32-bit Ubuntu Linux installation instructions:

Type/Copy/Paste: sudo tar xvzf jdk-8u20-linux-i586.tar.gz

64-bit Oracle Java on 64-bit Ubuntu Linux installation instructions:

Type/Copy/Paste: sudo tar xvzf jdk-8u20-linux-x64.tar.gz

4::Double-check your directories. At this point, you should have two uncompressed binary directories in /usr/local/java for the Java JDK/JRE listed as:

Type/Copy/Paste: ls -a

jdk1.8.0_20

jre1.8.0_20

5::Edit the system PATH file /etc/profile and add the following system variables to your system path. Use nano, gedit or any other text editor, as root, open up /etc/profile.

Type/Copy/Paste: sudo gedit /etc/profile

or

Type/Copy/Paste: sudo nano /etc/profile

6::Scroll down to the end of the file using your arrow keys and add the following lines below to the end of your /etc/profile file:

Type/Copy/Paste:

JAVA_HOME=/usr/local/java/jdk1.8.0_20

PATH=$PATH:$HOME/bin:$JAVA_HOME/bin

export JAVA_HOME

export PATH

7::Save the /etc/profile file and exit.

8::Inform your Ubuntu Linux system where your Oracle Java JDK/JRE is located. This will tell the system that the new Oracle Java version is available for use.

Type/Copy/Paste: sudo update-alternatives --install "/usr/bin/java" "java" "/usr/local/java/jdk1.8.0_20/bin/java" 1

this command notifies the system that Oracle Java JRE is available for use

Type/Copy/Pa