How to append firstname to lastname?

[praver235]

Hi..
Following is the code i worked on to sort the lastnames.I need to know how to append firstname along with middlename to respective lastname. What I need to do to get the specified output? Thanks.

 while ((s= in.readLine()) != null){
           String[] names = s.split(" ");

           lastname[e] = names[names.length-1];

           System.out.println(lastname[e]);
           e++;
            }
           for (int i=0;i<e-1;i++){

             for (int j=0;j<e-1;j++){

             if(lastname[i].compareTo(lastname[j])<0)
                    {
                        String temp= lastname[j];
                        lastname[j]= lastname[i];
                        lastname[i]=temp;
                    }
             }
         }
           for(int i=0; i<e-1; i++)
           {
               System.out.println(lastname[i]);
           }

[r035198x]

You add string together using +

So do firstName + middleName + lastName;

[praver235]

If I say firstName + middleName + lastName; I get output as null.

[r035198x]

So explain where those variables are coming from and post the relevant code.

[praver235]

I read the names from a file and split it at space after the middle name.I do not know how to fetch the firstname and middle name for respective lastname.I m stuck at this place.

[r035198x]

If the file contains the names separated by space e.g

Robert Louis Stevenson

Then when you do

String[] names = "Robert Louis Stevenson".split(" ");

you get back an array where
names[0] contains "Robert" and names[1] contains "Louis"
and names[2] contains "Stevenson"