Error: Java installation is either not complete or not correctly set up.

Telegram post https://t.me/efxtv2/3790

Step 1: Remove Any Existing Java Installations
$ sudo apt purge openjdk*
$ sudo apt autoremove


Step 2: Install OpenJDK
$ sudo apt update
$ sudo apt install openjdk-11-jdk openjdk-8-jdk


Step 3: Verify Java Installation
$ ls /usr/lib/jvm/


Step 4: Set Up Alternatives
$ sudo update-alternatives --install /usr/bin/java java /usr/lib/jvm/java-11-openjdk-amd64/bin/java 1
$ sudo update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/java-11-openjdk-amd64/bin/javac 1


Step 5: Configure the Default Java Version
$ sudo update-alternatives --config java
$ sudo update-alternatives --config javac


Step 6: Set JAVA_HOME and PATH
$ nano ~/.bashrc
$ export JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64
$ export PATH=$PATH:$JAVA_HOME/bin


Step 7: Apply the changes
$ source ~/.bashrc


Step 8: Verify the Installation Again (still error move to step 9)
$ java -version


Step 9: Create Symbolic Links Manually
$ sudo rm /usr/bin/java
$ sudo rm /usr/bin/javac


Step 10: Create new symbolic links
$ sudo ln -s /usr/lib/jvm/java-11-openjdk-amd64/bin/java /usr/bin/java
$ sudo ln -s /usr/lib/jvm/java-11-openjdk-amd64/bin/javac /usr/bin/javac


Step 11: Verify again
$ java -version
$ javac -version