Is the Java SE Development Kit free?

The Java SE Development Kit (JDK) is free to download and use for personal, development, and production purposes under the Oracle Free Use License (OFUL).

Do I need to install the JRE separately?

Yes, the Oracle JDK includes the Java Runtime Environment (JRE) and is sufficient to run Java applications, though you can also download the separate JRE if preferred.

What is the file size of the JDK 27.0.1 installer?

The JDK 27.0.1 installer for Windows is approximately 180 MB in size, though the exact size may vary slightly between online and offline installers.

Java SE Development Kit

Java SE Development Kit 27.0.1.0.3 Portable Download for Windows

Ahmed Akber
October 28, 2026
Code Editors (category)

Download the free Java SE Development Kit (JDK) for Windows, macOS, and Linux. Includes the JRE, compiler, and development tools. Get the portable for Windows

Java 27 Build 19 Early Access/ SE Development Kit 26.0.1

Download Java 28 Build 12 Early Access

Andy Zain
August 25, 2026
Tools (category), Code Editors (category), Misc (category), Portable (category), Windows (category)

Download Java 27 Build 19 Early Access for Windows, macOS, and Linux. This freeware development platform from Oracle is 200 MB and enables cross-platform…