NameScanner.java

import java.util.Scanner;
import java.io.*;

public class NameScanner{
   public static void main(String[] args) throws FileNotFoundException{//throws is necessary here. Google if you want to know more.
      //Create a Scanner and give it a file
      Scanner names = new Scanner( new File("yob2012.txt") );

      //Find longest name
      String longestName = "";
      int maxLength = 0;

      while( names.hasNext() ){
         String line = names.next();
         Scanner lines = new Scanner( line );
         lines.useDelimiter(",");
         String name = lines.next();

         if( name.length() >= maxLength ){
            longestName = name;
            maxLength = longestName.length();
            //System.out.println( longestName );
         }

         //Print out names that have the letter z
         if( name.indexOf("z") != -1 || name.indexOf("Z") != -1){
            System.out.println( name );
         }
      }

   }
}