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In case if you would like to develop an application and do Java programming, you will need JDK.

Typically, if you are only interested in running Java programs on your machine or browser, you only need to install JRE. The JDK includes the Java Runtime Environment (JRE), an interpreter (java), a compiler (javac), an archiver (jar), a documentation generator (javadoc), and some other development tools. JDK is needed if you want to convert your source code into a format that the Java Runtime Environment (JRE) can execute. Java Development Kit is a software development environment that provides the necessary collection of libraries and tools for developing Java applications. So, are there any crucial differences between them? What is JDK?Īs a major programming language throughout the past few decades, Java has been integral to computer science, and the Java JDK is essential in establishing a development environment.

The greatest difference is that Oracle JDK is free for development and testing, but you have to pay for it if you use it in production, and OpenJDK is free for any environment. To be clear, both are implementations of the same Java specification that passed the TCK (Java Technology Certification Kit) and are owned and maintained by Oracle. There has been a lot of confusion lately about Java and its available SDKs (Software Development Kits). In this article, we want to discuss the differences between Oracle JDK vs OpenJDK.