Can't Search Trhough an Array Twice

Question

Hey all.
I'm trying to write a a sort of phonebook program that takes in the first name and the last name of a person, and then searches trough the phonebook for it. This is the program:
class PhoneEntry
  String FirstName;    // first name of a person
  String LastName;     // last name of a person
  String phone;        // their phone number
  PhoneEntry( String f, String s, String p )
    FirstName = f; LastName = s;  phone = p;
class PhoneBook
PhoneEntry[] phoneBook;
PhoneBook()    // constructor
   phoneBook = new PhoneEntry[ 5 ] ;
   phoneBook[0] = new PhoneEntry(
    "James", "Barclay", "[phone]");
   phoneBook[1] = new PhoneEntry(
    "Grace", "Dunbar", "[phone]");
   phoneBook[2] = new PhoneEntry(
    "Paul", "Kratides", "[phone]");
   phoneBook[3] = new PhoneEntry(
    "Violet", "Smith", "[phone]");
   phoneBook[4] = new PhoneEntry(
    "John", "Wood", "[phone]");
PhoneEntry search( String targetFirstName ) 
   for (int j=0; j<phoneBook.length; j=j+1)
     if ( phoneBook[ j ].
       FirstName.equals( targetFirstName))
           return phoneBook[ j ];
   return null;
PhoneEntry search2( String targetLastName ) 
   for (int j=0; j<phoneBook.length; j=j+1)
     if ( phoneBook[ j ].
       FirstName.equals( targetLastName))
           return phoneBook[ j ];
   return null;
import java.lang.*;
import java.io.*;
class PhoneBookTester3
public static void main (String[] args) throws IOException
   PhoneBook pb = new PhoneBook(); 
   InputStreamReader inStream =
        new InputStreamReader( System.in ) ;
    BufferedReader stdin =
        new BufferedReader( inStream );
   String inputData; String FirstName; String LastName;
    System.out.println( "Enter first name:" );
    FirstName = stdin.readLine();
    PhoneEntry entry = pb.search( FirstName );
    System.out.println( "Enter last name:" );
    FirstName = stdin.readLine();
    PhoneEntry entry = pb.search( LastName );
   if ( FirstName.equals("quit") )
     System.out.println( "Good-bye." );
   if ( LastName.equals("quit") )
     System.out.println( "Good-bye." );
   else
      if ( entry != null )
          System.out.println( entry.FirstName + " " + entry.LastName + ":" + entry.phone );
      else
        if ( entry != null )
                System.out.println( entry.FirstName + " " + entry.LastName + ":" + entry.phone );
        else
                System.out.println("Name not found.");
}Each class is in its own window and is compiled seperately but they're conneted. I'm having a problem with the last class. I'm having a problem with this bit of code:
System.out.println( "Enter last name:" );
FirstName = stdin.readLine();
PhoneEntry entry = pb.search( LastName );It tells me that "entry" is already defined, and I get that, but if I change it the search doesn't seem to work properly. Does anyone know hoe I could get this program to work so that the user enters the first and last names and then the program searches for both?

Answer 1

This logic is a bit screwy, too:
if ( entry != null )
          System.out.println( entry.FirstName + " " + entry.LastName + ":" + entry.phone );
      else //[i.e., if entry is null]
        if ( entry != null ) // This will never be true.
                System.out.println( entry.FirstName + " " + entry.LastName + ":" + entry.phone );
        else // This will always be true
                System.out.println("Name not found.");
       }I think you need to find first name and last name in one call to some sort of search method. Your logic doesn't make sense. It should be:
prompt for first name
prompt for last name
search through list for a match of "first name and last name" (one call, two parameters [combine search and search2--both names must match]).