JDK 7 for OSX

In the past, developers obtained the JDK from Apple. Apple has announced that they will no longer provide a JDK. They will support the Open JDK project instead.
Here are he details of the Mac OS X Port Project within OpenJDK.

You can check status of the port on the project’s Wiki

There is also a mailing list.

You can download the builds.

Here are a few notes on the installation process.

Essentially, you need to mount the dmg and then drag and drop to install the JDK. The directory /Library/Java/JavaVirtualMachines need to already exist. If you’ve installed a previous version of the JDK, then it does.

Then run the OSX Java Preferences App to set which JDK you’d like to use. Your previous JDK is probably still at the top of the list. Simply drag and drop the new JDK to the top.