Description
In this article we will install Oracle’s Java, besides the OpenJDK can be shipped with the package managers in the distros. This way will allow you to end-to-end fully install Oracle JDK. The version I used was against version 8, but you can also use the same way for the other versions as well
Specifications
Debian 10 64 Bit
Oracle Java 8 Update 261
Steps
1. Download the Java from the Oracle’s web site https://www.oracle.com/java/technologies/javase/javase8u211-later-archive-downloads.html
2. Unpack the tar file
tar zxvf jdk-8u261-linux-x64.tar.gz
3. Create a folder in the usr location
sudo mkdir /usr/java
4. Move all the files from the unzipped location to the newly created folder
sudo mv jdk1.8.0_261/ /usr/java
5. Install all the java commands using the alternatives
sudo update-alternatives --install "/usr/bin/java" "java" "/usr/java/jdk1.8.0_261/bin/java" 1 sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/java/jdk1.8.0_261/bin/javac" 1 sudo update-alternatives --install "/usr/bin/javaws" "javaws" "/usr/java/jdk1.8.0_261/bin/javaws" 1 sudo update-alternatives --install /usr/bin/jar "jar" "/usr/java/jdk1.8.0_261/bin/jar" 1
6. Fix the permissions for the Java entries
sudo chmod a+x /usr/bin/java sudo chmod a+x /usr/bin/javac sudo chmod a+x /usr/bin/javaws sudo chmod a+x /usr/bin/jar sudo chown -R root:root /usr/java/jdk1.8.0_261
7. Add Java home to the Global Environment
sudo nano /etc/profile.d/java.sh
7.1. And add the below line and save
export JAVA_HOME=/usr/java/jdk1.8.0_261
export JRE_HOME=$JAVA_HOME/jre
export PATH=${JAVA_HOME}/bin:${PATH}
export PATH=${JRE_HOME}/bin:${PATH}
8. Make the file executable and Reload the “sh” file in the system
chmod +x /etc/profile.d/java.sh source /etc/profile.d/java.sh
9. Check the installation for Java
java -version java version "1.8.0_261" Java(TM) SE Runtime Environment (build 1.8.0_261-b12) Java HotSpot(TM) 64-Bit Server VM (build 25.261-b12, mixed mode)
10. Check the installation for Java Compiler
javac -version javac 1.8.0_261
11. Check the installation for Java Web Start
javaws -version Java(TM) Web Start 11.261.2.12-fcs
11. Check the installation for Jar
jar
Usage: jar {ctxui}[vfmn0PMe] [jar-file] [manifest-file] [entry-point] [-C dir] files ...
sudo update-alternatives --config java sudo update-alternatives --config javac sudo update-alternatives --config javaws sudo update-alternatives --config jar