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# create directories for jdk
sudo mkdir ~/DevTools
sudo mkdir ~/DevTools/JDK
# Download the OpenJDK 11 LTS Version (“tar.gz”), here:
https://adoptopenjdk.net
# Extract the file in DevTools
sudo tar -zxvf ~/Downloads/OpenJDK11U-jdk***tar.gz -C ~/DevTools/JDK/
# Open .bashrc
sudo nano ~/.bashrc
# Add these lines to .bashrc
DEV_TOOLS="/home/$USER/DevTools"
JAVA_HOME="$DEV_TOOLS/JDK/jdk-11.0.7+10"
export JAVA_HOME
PATH="$JAVA_HOME/bin:$PATH"
# Reset bash
source ~/.bashrc
# Check the version of java
java --version
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sudo apt install default-jdk
Setting up default-jdk-headless (2:1.11-72build2)
Setting up openjdk-11-jdk:amd64 (11.0.15+10-0ubuntu0.22.04.1)
using /usr/lib/jvm/java-11-openjdk-amd64/bin/jconsole
Setting up default-jdk (2:1.11-72build2)
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$ Java -version $ sudo dpkg -i jdk-version.deb $ ls /user/lib/jvm $ sudo update-alternatives --install /usr/bin/java java /usr/lib/jvm/jdk-16.0.1/bin/java 1 $ sudo update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/jdk-16.0.1/bin/javac 1 $ java -version $ javac -version