Hello Everyone , in order to use any android application in your mobile it must have .apk extension .
so how to create .apk file using eclipse
1) right click on project name and select export.
select android folder and then Export Android Application.

2)Browse the project for which you want to create apk file
press next
3) then you will be asked to select keystore selection

4) for location you goto WINDOWS ---> PREFERENCES ----> ANDROID ---> BUILD
and copy the default debug keystore
5) password is android *[it must be android only].
enter next.
6) KEY ALIAS SELECTION
7)
select destination for apk file and you are done... your application is
ready ... put it into your android mobile and install it..
so how to create .apk file using eclipse
1) right click on project name and select export.
select android folder and then Export Android Application.

2)Browse the project for which you want to create apk file
press next
3) then you will be asked to select keystore selection

4) for location you goto WINDOWS ---> PREFERENCES ----> ANDROID ---> BUILD
and copy the default debug keystore
5) password is android *[it must be android only].
enter next.
6) KEY ALIAS SELECTION
- SELECT USE EXISTING KEY
- ALIAS ---> androiddebugkey
- PASSWORD --->android
