install-java8.md

Install the Java Software Development Kit (JDK) {#prereq-java}

To determine if Java is already installed, enter the following command:

java -version

If the message java: command not found displays, you must install the Java SDK as discussed in the next section.

See one of the following sections:

• Install the latest JDK on CentOS
• Install the latest JDK on Ubuntu

Install the JDK on CentOS {#install-prereq-java-centos}

See this article on digitalocean.

Be sure to install the JDK and not the JRE.

yum -y install java-1.8.0-openjdk

{:.bs-callout .bs-callout-info} Java version 8 might not be available for all operating systems. For example, you can search the list of available packages for Ubuntu.

Install the JDK on Ubuntu {#install-prereq-java-ubuntu}

To install JDK 1.8 on Ubuntu, enter the following commands as a user with root privileges:

add-apt-repository -y ppa:webupd8team/java
apt-get -y update
apt-get install -y oracle-java8-installer

For other options, see Oracle documentation.