How to implement YAHTZEE game in java using switch statements?

I have to create a source code in JAVA for scoring in the game Yahtzee
I have no idea where to start
It has to have a switch statement and if-else statements
here is what I have so far
Code java:
public class Yahtzee {
 
  // constants that specify categories on the scoresheet
  public static final int ONES = 1;
  public static final int TWOS = 2;
  public static final int THREES = 3;
  public static final int FOURS = 4;
  public static final int FIVES = 5;
  public static final int SIXES = 6;
  public static final int THREE_OF_A_KIND = 9;
  public static final int FOUR_OF_A_KIND = 10;
  public static final int FULL_HOUSE = 11;
  public static final int SMALL_STRAIGHT = 12;
  public static final int LARGE_STRAIGHT = 13;
  public static final int YAHTZEE = 14;
  public static final int CHANCE = 15;
 
  /**
   * Calculates the score for a given turn.
   * 
   * @param category selected by the player
   * @param dice current values of the dice
   * @return number of points, or 0 if N/A
   */
  public static int calculateScore(int category, Dice dice) {
    int die1;
    int die2;
    int die3;
    int die4;
    int die5;
 
     die1 = (int)(Math.random() * 6) + 1;
    die2 = (int)(Math.random() * 6) + 1;
    die3 = (int)(Math.random() * 6) + 1;
    die4 = (int)(Math.random() * 6) + 1;
    die5 = (int)(Math.random() * 6) + 1;
 
 
 
    int score;
    score = 0;
    switch(score)
    {
      case ONES:
        break;
      case TWOS:
        break;
      case THREES:
        break;
      case FOURS:
        break;
      case FIVES:
        break;
      case SIXES:
        break;
      case THREE_OF_A_KIND:
        break;
      case FOUR_OF_A_KIND:
        break;
      case FULL_HOUSE:
        break;
      case SMALL_STRAIGHT:
        break;
      case LARGE_STRAIGHT:
        break;
      case YAHTZEE:
        break;
      case CHANCE:
        break;
 
        return score;
    }
  }
     public static int oneValue(int value, Dice dice) {
        return 0;
    }
 
    public static int threeOfAKind(Dice dice) {
        return 0;
    }
 
    public static int fourOfAKind(Dice dice) {
        return 0;
    }
 
    public static int fullHouse(Dice dice) {
        return 0;
    }
 
    public static int smallStraight(Dice dice) {
        return 0;
    }
 
    public static int largeStraight(Dice dice) {
        return 0;
    }
 
    public static int yahtzee(Dice dice) {
        return 0;
    }
 
    public static int chance(Dice dice) {
        return 0;
    }
 
 
  }