Make sure your Android emulator is running. Else, you will not be able to even find the database file.
In Eclipse, go to Window > Show View > Other, then choose File Explorer (it has an Android icon).
Within the File Explorer tab, the database file of your app is located in
<strong><span style="color: #0000ff;">/data/data/[package]/databases/</span></strong>
Highlight the database file and click the icon on the upper right that looks like a diskette with a tooltip that says “pull a file from the device”.
That should get you your SQLite database file.