//import like this:

import Package1.class
import Package2.class

//use it in your class
class yourclass
{
  class.methodA(); // Package1 method call
  class.methodA(); // Package2 method call
}

// Do you want to say like this?

//import like this:

import Package1.classA
import Package2.classB

//use it in your class
class yourclass
{
  classA.methodA(); // Package1 method call
  classB.methodA(); // Package2 method call
}

You can not call a method like above unless untill ur 
classes are static. 
       You can create instance and u can use as

Instance.method();