Install OpenJDK 11 headlessby entering the following: sudo yum install java-11-openjdk-headlessįor OpenJDK 8 headlessrun: sudo yum install java-1.8.0-openjdk-headless Install Oracle JDK on CentOS 8 It uses minimal system resources and doesn’t include keyboard or mouse support. The headless option is a minimal runtime environment, without a graphical interface, more suitable for server applications. Just like OpenJRE, Java headless is part of OpenJDK and should not be installed on top of it.

Installing OpenJDK HeadlessĪnother alternative to OpenJDK is only installing the headlessversion. The Runtime Environment comes with the Java Development Kit by default.

If you want to dive deep into Java programming and become a software developer, I recommend you to learn this Java course on Udemy.Note: Remember – You don’t need to install OpenJRE if you already have OpenJDK. How to write, compile and run a hello world Java program for beginners.Understand 9 features of Java programming language.Major versions were released after every 2 years, however the Java SE 7 took 5 years to be available after its predecessor Java SE 6, and 3 years for Java SE 8 to be available to public afterward.Since Java SE 10, new versions will be released very six months. From Java 6, the version name is Java SE X.This could make confusion for someone, so keep in mind that version 1.5 and version 5.0 are just two different version names for only one thing. Internal version is continuous from previous ones (1.5 after 1.4), but the external version has a big jump (5.0 for 1.5). From versions 1.5, Sun introduces internal and external versions.From versions 1.2 to 1.4, the platform is named as J2SE (Java 2 Standard Edition).Versions 1.0 and 1.1 are named as JDK (Java Development Kit).From the table above we can see that the naming and the version number have been changing over times:

Java jdk kit 8