Follow these instructions to install the Java ME SDK on Mac OS.
Verify that your system meets the preceding system requirements.
Download the DMG file from http://java.sun.com/javame/downloads/sdk30.jsp.
Double-click the DMG file.
Click Agree to accept the license and continue the installation.
The installer displays the following panel. Dragging the Java ME SDK application icon over the Applications folder link will install Java ME SDK in the Applications folder. You can also use the Finder to move the application.
In the Applications directory, click the Java ME SDK icon to start the application. Wait a few seconds for the Device Manager to detect the default devices delivered with the SDK.