Install Oracle JDK 15 on Linux

Install Oracle JDK 15 on Linux

9:02:00 AM

Even though OpenJDK is available in Linux repositories, some applications strictly require Oracle Java Development Kit. This article shows you how to manually install Oracle JDK $java_version on your Linux system. This article is using JDK $java_version$java_update_no to demonstrate the installation. In the provided commands, replace the version specific paths and file names according to your downloaded version.

Version specific installation guides are available here:

Install Oracle JDK $java_version on Linux

Oracle provides deb and rpm installers
If your Linux distribution is using DEB package format like Debian, you can download and install the jdk-$java_version$java_update_no_linux-x64_bin.deb file using the following command:
sudo dpkg -i jdk-$java_version$java_update_no_linux-x64_bin.deb
If your  Linux distribution is using RPM package format like Cent OS, you can download and install the jdk-$java_version$java_update_no_linux-x64_bin.rpm file using the following command:
sudo rpm -ivh jdk-$java_version$java_update_no_linux-x64_bin.rpm

However, this article explains the manual installation method which is applicable for all Linux distributions out there. Personally, I prefer the manual installation because I have more control over the changes made in the system.



Step 1:
Download the latest JDK(jdk-$java_version$java_update_no_linux-x64_bin.tar.gz) from this official site:




If you want to download to a remote server or if you simply prefer wget, use the following command:
wget --no-check-certificate -c --header "Cookie: oraclelicense=accept-securebackup-cookie" https://download.oracle.com/otn-pub/java/jdk/15.0.2+7/0d1cfde4252546c6931946de8db48ee2/jdk-15.0.2_linux-x64_bin.tar.gz

Step 2:
Open the terminal (Ctrl + Alt + T) and enter the following command.
sudo mkdir /usr/lib/jvm
If the /usr/lib/jvm folder does not exist, this command will create the directory. If you already have this folder, you can ignore this step and move to the next step.

Step 3:
Enter the following command to change the directory.
cd /usr/lib/jvm

Step 4:
Extract the jdk-Xuxx-linux-xXX.tar.gz file in that directory using this command.
sudo tar -xvzf ~/Downloads/jdk-$java_version$java_update_no_linux-x64_bin.tar.gz
According to this command, the JDK filename is jdk-$java_version$java_update_no_linux-x64_bin.tar.gz and which is located in the ~/Downloads folder. If your downloaded file is in any other location, change the command according to your path.

Step 5:
Enter the following command to open the environment variables file.
sudo nano /etc/environment

According to your personal preference, you can choose any text editors instead of nano.

Step 6:
In the opened file, add the following bin folder to the existing PATH variable.
/usr/lib/jvm/jdk-$java_version$java_update_no/bin
The PATH variables must be separated by colon.

Add the following environment variables at the end of the file.
JAVA_HOME="/usr/lib/jvm/jdk-$java_version$java_update_no"

The environment file before the modification:
PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games"
The environment file after the modification:
PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/usr/lib/jvm/jdk-$java_version$java_update_no/bin"
JAVA_HOME="/usr/lib/jvm/jdk-$java_version$java_update_no"

Save the changes and close nano (Ctrl + O, Ctrl + X).

Step 7:
Enter the following commands to inform the system about the Java's location. Depending on your JDK version, the paths can be different.
sudo update-alternatives --install "/usr/bin/java" "java" "/usr/lib/jvm/jdk-$java_version$java_update_no/bin/java" 0
sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/lib/jvm/jdk-$java_version$java_update_no/bin/javac" 0
sudo update-alternatives --set java /usr/lib/jvm/jdk-$java_version$java_update_no/bin/java
sudo update-alternatives --set javac /usr/lib/jvm/jdk-$java_version$java_update_no/bin/javac

Step 8:
To verify the setup enter the following commands and make sure that they print the location of java and javac as you have provided in the previous step.
update-alternatives --list java
update-alternatives --list javac

Step 9:
Restart the computer (or just log-out and login) and open the terminal again.

Step 10:
Enter the following command.
java -version

If you get the installed Java version as the output, you have successfully installed the Oracle JDK in your system.

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