Examples of applications that use Java are numerous and widespread but include web browsers, office applications and even mainstream games like Minecraft are based on Java. Java is a programming language and software platform. Why would you need the JDK then? Because the application server will convert JSP into Java servlets and needs to use the JDK to compile the servlets.

For example, if you are deploying a web application with JSP, you are technically just running Java programs inside the application server. Sometimes, even if you are not planning to do any Java development on a computer, you still need the JDK installed. The new license permits certain uses, such as personal use and development use, at no cost – but other uses authorized under prior Oracle JDK licenses may no longer be available.

The new Oracle Technology Network License Agreement for Oracle Java SE is substantially different from prior Oracle JDK licenses. It is capable of creating and compiling programs. It has everything the JRE has, but also the compiler (javac) and tools (like javadoc and jdb). Update the package repository to ensure you download the latest software: sudo yum updateĢ.The JDK is the Java Development Kit, the full-featured SDK for Java. The current default, Long-Term-Support (LTS) version is Java 11. You can also decide which version you want on your system by installing a specific version number. You can install one or several Java packages on your machine.

However, bear in mind its license only allows non-commercial use of the software. You can find the official Oracle JDK through a third-party repository or on the official Oracle webpage. You use JRE for running Java-based applications, while JDK is for developing and programming with Java.Īlso available is Java Oracle, another SE implementation, which has additional commercial features. There are two (2), open-source Java packages, Java Development Kit (Open JDK) and Java Runtime Environment (Open JRE). In this document, we look at different packages within the Java SE.

The yum package manager, included by defaultĬurrently, there are four Java platforms available:.

Access to the command-line/terminal window.

For a dedicated Fedora guide, please refer to How To Install Java On Fedora.Īnd for other systems, check our tutorial on how to install Java on Windows. Note: These installation instructions apply for CentOS7 as well as versions 6 and 6.5, RHEL, and recent Fedora releases.

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