There are also two different implementations of Java, OpenJDK and Oracle Java, with almost no differences between them except that Oracle Java has a few additional commercial features. If you are a Java developer, then you will need JDK, which includes JRE and development/debugging tools and libraries. If you only want to run Java programs, then you can install JRE, which contains just the Java Runtime Environment. There are two different Java packages in CentOS 7, Java Runtime Environment (JRE), and the Java Development Kit (JDK). This tutorial covers the Java SE (Standard Edition) edition. Java is distributed in three different editions, Standard Edition (SE), Enterprise Edition (EE), and Micro Edition (ME). Prerequisites #īefore continuing with this tutorial, make sure you are logged in as a user with sudo privileges We’ll show you how to install OpenJDK as well as Oracle Java. This tutorial describes how to install various versions and implementations of Java on CentOS 7.

As a result, those packages have moved, and this will require changes to package imports.Java is one of the most popular programming languages in the world, used to build different kinds of applications and systems.

Oracle has chosen the Eclipse Foundation as the new home for the Java Platform Enterprise Edition.

Due to lack of browser support for Java plugins, the Applet API has been deprecated.

The “var” keyword only affects local variables, and the Type Inference keeps you repeating the same text over and over again

A developer-friendly keyword “var” was added to help to reduce boilerplate coding.

This is very interesting for serverless-compute and one-offs in Kubernetes

A REPL (read-eval-print-loop) tool, JShell, was added to support interactive programming, similar to what is available in Python.

Modularization also enables code to be refactored for easier maintenance, through a self-describing collection of code, data, and resources.

The introduction of modularity to better support scaling down to small computing devices.

However, the biggest differences between Java 8 and Java 11 are:

There are always a lot of little things that go into a release of Java, or any product for that matter.

Java se development kit 7 how to use