how to install java 13 in ubuntu
# Java jdk download link
# https://jdk.java.net/archive/
wget https://download.java.net/java/GA/jdk13.0.2/d4173c853231432d94f001e99d882ca7/8/GPL/openjdk-13.0.2_linux-x64_bin.tar.gz
sudo mkdir /usr/java
cd /usr/java/
sudo cp /home/osboxes/openjdk-13.0.2_linux-x64_bin.tar.gz .
ls
sudo tar -xvzf openjdk-13.0.2_linux-x64_bin.tar.gz
sudo nano /etc/profile
### Add below lines after the last line
# Java 13
JAVA_HOME=/usr/java/jdk-13.0.2
PATH=$PATH:$HOME/bin:$JAVA_HOME/bin
export JAVA_HOME
export PATH
java --version
sudo update-alternatives --install "/usr/bin/java" "java" "/usr/java/jdk-13.0.2/bin/java" 1
sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/java/jdk-13.0.2/bin/javac" 1
java --version
sudo update-alternatives --config java
sudo update-alternatives --config javac
java --version