Guys please Help me find answers on A and B below

please i have this task to to but i can only manage to display five cards but i cant compare my result, here is what should be done:

(Card Shuffling and Dealing) Modify the application to deal a five-card poker
hand. Then modify class "DeckOfCards" to include methods that determine whether a
hand contains :

a) a pair
b) two pairs
c) three of a kind (e.g., three jacks)
d) four of a kind (e.g., four aces)
e) a flush (i.e., all five cards of the same suit)
f) a straight (i.e., five cards of consecutive face values)
g) a full house (i.e., two cards of one face value and three cards of another face value)

also and also Use the methods developed to write an application
that deals two five-card poker hands, evaluates each hand and determines which is better.

below is the codes of classes

i have tried introducing this code bu it gives me 3 errors:"

"if(myDeckOfCards.dealCard(face + " of " + suit).equals("Duece of Hearts"))
{
System.out.printf( "A Pair" );

}"

Code =java:

<//  Card.java
// Card class represents a playing card.
 
public class Card 
{
   private String face; // face of card ("Ace", "Deuce", ...)
   private String suit; // suit of card ("Hearts", "Diamonds", ...)
 
   // two-argument constructor initializes card's face and suit
   public Card( String cardFace, String cardSuit )
   {
      face = cardFace; // initialize face of card
      suit = cardSuit; // initialize suit of card
   } // end two-argument Card constructor
 
   // return String representation of Card
   public String toString() 
   { 
      return face + " of " + suit;
   } // end method toString
} // end class Card
 
>

Code =java:

<// DeckOfCards.java
// DeckOfCards class represents a deck of playing cards.
import java.util.Random;
 
public class DeckOfCards
{
   private Card[] deck; // array of Card objects
   private int currentCard; // index of next Card to be dealt
   private static final int NUMBER_OF_CARDS = 52; // constant # of Cards
   // random number generator
   private static final Random randomNumbers = new Random();
 
   // constructor fills deck of Cards
   public DeckOfCards()
   {
      String[] faces = { "Ace", "Deuce", "Three", "Four", "Five", "Six",
         "Seven", "Eight", "Nine", "Ten", "Jack", "Queen", "King" };
      String[] suits = { "Hearts", "Diamonds", "Clubs", "Spades" };
 
      deck = new Card[ NUMBER_OF_CARDS ]; // create array of Card objects
      currentCard = 0; // set currentCard so first Card dealt is deck[ 0 ]
 
      // populate deck with Card objects
      for ( int count = 0; count < deck.length; count++ )
         deck[ count ] =
            new Card( faces[ count % 13 ], suits[ count / 13 ] );
 
 
   } // end DeckOfCards constructor
 
   // shuffle deck of Cards with one-pass algorithm
   public void shuffle()
   {
      // after shuffling, dealing should start at deck[ 0 ] again
      currentCard = 0; // reinitialize currentCard
 
      // for each Card, pick another random Card and swap them
      for ( int first = 0; first < deck.length; first++ )
      {
         // select a random number between 0 and 51
         int second =  randomNumbers.nextInt( NUMBER_OF_CARDS );
 
         // swap current Card with randomly selected Card
         Card temp = deck[ first ];
         deck[ first ] = deck[ second ];
         deck[ second ] = temp;
 
 
 
 
      } // end for
   } // end method shuffle
 
   // deal one Card
   public Card dealCard()
   {
      // determine whether Cards remain to be dealt
      if ( currentCard < deck.length )
         return deck[ currentCard++ ]; // return current Card in array
      else
         return null; // return null to indicate that all Cards were dealt
 
 
 
   } // end method dealCard
 
 
 
} // end class DeckOfCards>

Code =java:

<// DeckOfCardsTest.java
// Card shuffling and dealing.
 
public class DeckOfCardsTest
{
   // execute application
   public static void main( String[] args )
   {
      DeckOfCards myDeckOfCards = new DeckOfCards();
      myDeckOfCards.shuffle(); // place Cards in random order
 
      // print all 52 Cards in the order in which they are dealt
      for ( int i = 1; i <= 5; i++ )
      {
         // deal and display a Card
         System.out.printf( "%-19s", myDeckOfCards.dealCard() );
 
		 if ( i % 1 == 0 ) // output newline every 4 cards
		    System.out.println();
 
      } // end for
 
     /* if(myDeckOfCards.dealCard(face + " of " + suit).equals("Duece of Hearts"))
         {
 
         }*/
   } // end main
} // end class DeckOfCard>