

Install / Extract the downloaded Oracle Java package. Wget -no-check-certificate -no-cookies -header "Cookie: oraclelicense=accept-securebackup-cookie" You can always check the java version by java -version command.If you still want to use the command line, use the below command. It'll only update the java version for a particular terminal. If you want to try it on the go you can type the below command in the same terminal. This needs to sign out and sign back in to use. JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64 Sudo vi /etc/profile and add the following lines #JAVA_HOME=/usr/lib/jvm/jdk1.8.0_221 Vi ~/.bashrc and add the following line export JAVA_HOME=/usr/lib/jvm/jdk1.8.0_221 (path/jdk folder) If you want to switch java versions you can try below methods. Sudo apt-get install oracle-java8-installer sudo add-apt-repository ppa:webupd8team/java If you want to install Oracle JDK 8 follow the below commands. You can check the java version by following the command. In Ubuntu, you can simply install Open JDK by following commands. It will display something like below, openjdk version "11.0.4" *2 /usr/lib/jvm/java-8-openjdk-amd64/bin/javac 1081 manual modeģ /usr/lib/jvm/jdk1.8.0_211/bin/javac 0 manual mode Will result something like below, There are 3 choices for the alternative javac (providing /usr/bin/javac).Ġ /usr/lib/jvm/java-11-openjdk-amd64/bin/javac 1111 auto modeġ /usr/lib/jvm/java-11-openjdk-amd64/bin/javac 1111 manual mode You can select desired selection number, my case it's 0įor javac, sudo update-alternatives -config javac Press to keep the current choice, or type selection number: You can see java 1.11 available from above list, use below command to set java 11 to default, sudo update-alternatives -config javaįor above command, you will get something like below and also, will ask for an option to set, There are 3 choices for the alternative java (providing /usr/bin/java).Ġ /usr/lib/jvm/java-11-openjdk-amd64/bin/java 1111 auto modeġ /usr/lib/jvm/java-11-openjdk-amd64/bin/java 1111 manual mode You should see something like below, java-1.11.0-openjdk-amd64 1111 /usr/lib/jvm/java-1.11.0-openjdk-amd64

To make sure java version is 1.11.x, if found old one or different, check below command to see the available jdks, update-java-alternatives -list
