Java Rock Paper Scissors

// 15101194S

//Import Scanner
import java.util.Scanner;
import java.util.Random;
public class PaperScissorsRock
{
        public static void main(String[] args)
        {
             //Title
             System.out.println("Rock, Paper, Scissors");
             //Scanner
             Scanner sc = new Scanner(System.in);
             //Insert Values
             System.out.print("Enter 0 for paper, 1 for scissors, or 2 for rock (-1 to quit): ");
             int Value1 = sc.nextInt();
             //Randomizer
             Random randomGen = new Random();
             // nextInt() returns a pseudo random, uniformly
             // distributed integer value between 0 (inclusive)
             // and the specified value (exclusive), therefore,
             // the following generates a random value between 0 to 2
             int Value2 = randomGen.nextInt(3);
             //Computer Output
             switch(Value2)
             {
             case 0:
                System.out.println("Computer picks paper");
                break;
             case 1:
                System.out.println("Computer picks scissors");
                break;
             case 2:
                System.out.println("Computer picks rock");
                break;
             }
             //Calculation
             if (Value1 >= 0){
                if ((Value1 == 0 && Value2 == 2) || (Value1 == 1 && Value2 == 0) || (Value1 == 2 && Value2 == 1))
                      System.out.println("Player Wins");
                if ((Value1 == 0 && Value2 == 0) || (Value1 == 1 && Value2 == 1) || (Value1 == 2 && Value2 == 2))
                    System.out.println("Draw");
             else
             System.out.println("Computer Wins");
             }
         //Error
         if (Value1 < 0)
                 System.out.println("Invalid input.");
             //Output
         }
}