Having created a MIDlet within your project you'll want to check that it behaves and looks as you expected. You do this by running the app in the PC-based emulator included in the SDK. This section explains how.
Test your application:
1. Run the application in the emulator; on the Run menu click Run (or press CTRL-F11)
More testing: You may wish to check out these tools, which can help with testing:
Step-by-step – Test your application
By default, the Nokia IDE for Java ME is set to automatically build your projects when needed, so you can proceed to running the app in the emulator.
Step 1 — Run your app in the emulator
To run the MIDlet in the emulator, on the Run menu click Run (or press CTRL-F11). The emulator opens and the application starts, as shown below.
Step 2 — Test your app
You can now test the app to confirm it behaves as you expected.
Once testing has finished, the app can be closed.
Tip: You may want to leave the emulator open if more testing is planned. Leaving the emulator open improves the speed at which an app is loaded.