install Folders
I intend, when i said folders that under objects/Src folder. When i define package name, b4a creates two folder seperated "dot" from package name like Hello.World -> Hello and World folders. Hello folder contains World folder and world folder contains DesignerSicripts folder and Main.Java file. Guess, Main.Java compiled java file of b4a project. But anyway, i still not perceive, why Hello folder contains the others. Guess this structure needful about java project.
Thank you again for your first answer. Problem is solved.
Best Regards
Devrim