java - How to make this class execute? -

i've created class connects socket , accepts string messages, , placed in mainactivity java file.

but i'm not sure make execute - i.e. should start under oncreate, or make start button, etc?

public class mainactivity extends activity {   protected void oncreate(bundle savedinstancestate)      {          //stuff     }    public void main(string[] args)     {         //connect socket         //process incoming data         //display incoming data     } } 

there shouldn't main() function in class, activity should start whatever stated in oncreate().