GetJava

=If you don't have the JDK= Or if you have an older version that does not work with the most recent BlueJ release Notice that, according to the information on the BlueJ downloads page, MacOS X users will not need to install the JDK.

The JDK can be installed from [this location] click the link near the top of the page:



Select the Operating System you are using from the drop-down list, continue, agree and download the file. Read the installation instructions for your operating system and install the software.