Are Open JDK and JDK7 the same thing?

Ar开发者_StackOverflow中文版e Open JDK and JDK7 the same thing?

Open JDK is a free (but not certified) implementation of the JLS (java language specification) where JDK7 is the next version of Sun's JDK which is currently 1.6 (or just Java 6 as the marketing devision of Sun called it).

OpenJDK was initially based only on the JDK 7.0 version of the Java platform. Since February 15, 2008, there are two separate OpenJDK projects:

• The main OpenJDK project, which is based on the JDK 7.0 version of the Java platform
• The JDK 6 project, which provides an Open-source version of Java 6.0.

I hope this clears the confusion a bit.

It appears to be a Solaris<-->OpenSolaris situation, viz. there's an open-source project with as much code as possible; the fixes get transferred back to the main software, which the vendor supports and sells. OpenJDK is a project. OpenJDK version 7 and JDK7 appear to be largely but not exactly the same (per here).