public class groups
{

public static void main(String[] args)
{

    char group = "Kalousek, Draxo, Rožek";
    char group2 = "Ty, Já, Somebody else";



    if(group || group )
    {

      getFirstgroup(group);
      getSecondgroup(group2);
      System.getDetails();

    }

}

public static char getFirstgroup(char data_array)
  {

  if(in_array(data_array, "Kalousek"))
    {
      return "This is group of people, which I hate.";
    }

  }

public static char getSecondgroup(char data_array)
  {

  if(in_array(data_array, "Ty")
    {
      return "This is group of people, which I love";
    }

  }
}