When you create new android project from eclipse editor you found that there are lots of directories created for android application lets us understand all these directory.
Android Handset runs a Linux operating system as background and upon which android application runs. Each application runs in separate process in Dalvik virtual machine for each application an instance of Dalvik virtual machine is created.
Android Android Beginner Android Development Tools Android Directory Structure Android Example Android Help Android Programming Android TextView Android Tutorial AndroidManifest.xml. drawable assets bin Dalvik Virtual Machine Execution Flow gen Linux Platform Mobile Application Security Sharing Data Simple Text src Virtual Machine