How can I get that API into our Android project.
As per my understanding the you have a code written on J2ME platform where you are using javax.microedition.io
But as you are making an application in Android and Android does not have the package available, so you need to use any library to achieve your goal.
Here is a open source library for parsing Ksoap2 data
http://code.google.com/p/ksoap2-android/
Again you can use the following tutorial to get started
http://www.helloandroid.com/tutorials/using-ksoap2-android-and-parsing-output-data