Building Mobile Projects 
To run or debug the mobile application for laptop, you must create the executable binaries (compiled Java code).
Recommendation
We recommend that you rebuild and repackage the entire project if you have created it using an earlier release of the mobile applications for laptop.
You have:
Created an application element in the Mobile project
Saved the project
In the Laptop UI Explorer, click the project node with the secondary mouse button and choose
Note
If this is the first build of the project, the IDE builds the entire project. If you have built the project earlier, the IDE builds only those modifications that have been made since the last build.
To rebuild the entire project, click the project node with the secondary mouse button and choose
Note
Rebuild Project.We recommend that you always select the Autobuildindicator for the IDE. As a result, the IDE builds the project each time you save the metadata. To do this, choose and choose OK.