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Installing JDK: [Manually using .tar.gz]

1. Go to Oracle JDK

2. Select “JDK Download”

3. “Accept the license terms” and download .tar.gz file based on your OS type

  1. Linux X86 (32 bit)
  2. Linux X64 (64 bit)

4. After you download the file, right-click the file and select “Extract here”

5. You will find a folder with the name similar to “jdk_1.8_version”

6. Open the terminal (ctrl+alt+t)

7. sudo mv /path/to/your/jdk_folder/ /usr/lib/jvm

8. The complete folder “jdk_1.8_version” will be moved to /usr/lib/jvm

9. Now we need to inform Ubuntu to use this JDK.

10. sudo gedit /etc/profile.d/oracle_jdk8.sh

11. Gedit would open a blank file for you. Write the following code in the file.

export J2SDKDIR=/usr/lib/jvm/oracle_jdk8
export J2REDIR=/usr/lib/jvm/oracle_jdk8/jre
export PATH=$PATH:/usr/lib/jvm/oracle_jdk8/bin:/usr/lib/jvm/oracle_jdk8/db/bin:/usr/lib/jvm/oracle_jdk8/jre/bin
export JAVA_HOME=/usr/lib/jvm/oracle_jdk8
export DERBY_HOME=/usr/lib/jvm/oracle_jdk8/db

12. Save the file. Close it.

13. Once you restart the changes will be made.

14. To force the changes to happen in the current session, without restarting, execute the following:

source /etc/profile.d/oraclejdk.sh

15. Now, your ubuntu can use JDK 8! Happy Javaing!

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