Accessing a web service from an android phone

Hello I am new to Android .I have been given an Android project to do. As a part of my project I need to do the following :

1)Create an Android application that takes 3 inputs from user via EditText namely id,address and contact no, and has a submit button at the开发者_C百科 end to send that data

2)After clicking the submit button , a web service that we will create using Netbeans should get invoked and display it's contents on the phone to the user The web service will basically contain some predefined data entries that I want to display it to the user with a checkbox say eg. xyz yax where 'xyz' and 'yax' are contents of my web service. The user selects any checkbox say 'xyz' , clicks another submit button below and the entire data namely id , address ,contact no , and now 'xyz' goes into a mysql database.

3) After reading this I am now aware of how to create a web service but the problem I have is how to invoke that web service from an android phone ???

Can someone please help me ?

You can directly use web-service from URL.