public class A{

     public void show(List <String>list1,List<Integer>lists2){...}

     public void show(List <Integer>list1,List<String>lists2){...}
}
public class B{
 public static void main(..){
    A a=new A();
    List<String> list1;
    List<Integer>lists2;
    a.show(list1,lists2);
     }
   }

public void show(List list1, List list2);
public void show(List list1, List list2);