# Project Properties

To inspect or alter an EclipseME project properties, open the Properties dialog via the Project / Properties menu of the workbench.

## J2ME Properties

Select the J2ME category from the left pane of the properties dialog. The basic properties page for EclipseME looks like the following:

Property items:

Item | Contents
J2ME Platform Definition | The Platform Definition setting controls both which particular platform the project is compiled against, and also affects the choice of devices that are available in the Launch Configuration. When this setting changes, the contents of your project are automatically recompiled. Thus, if you build a project using the MIDP 2.0 platform and then change to a MIDP 1.0 platform definition, your project may no longer compile because of references to classes, methods or constants not present in the MIDP 1.0 definition.