Cài đặt Java trên Ubuntu

sudo tar xvzf jdk-11.0.6_linux-x64_bin.tar.gz

# Create directory

sudo mkdir /usr/local/java

# Move "jdk-11.0.6" directory to /usr/local/java/

sudo mv jdk-11.0.6 /usr/local/java/

sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/local/java/jdk-11.0.6/bin/javac" 1

sudo update-alternatives --install "/usr/bin/java" "java" "/usr/local/java/jdk-11.0.6/bin/java" 1

# If you Install Java 8:
sudo update-alternatives --install "/usr/bin/javaws" "javaws" "/usr/local/java/jdk-11.0.6/bin/javaws" 1

sudo chmod a+x /usr/bin/java

sudo chmod a+x /usr/bin/javac

# If you install Java 8:
sudo chmod a+x /usr/bin/javaws

sudo chown -R root:root /usr/local/java/jdk-11.0.6

sudo update-alternatives --config java

java -version