RockPaperScissors.java

import java.util.*;
public class RockPaperScissors {
	public static void main(String[]args) {
		int s[] = {2, 0, 1};
		String name[] = {"rock", "paper", "scissors"};
	    System.out.println("Rock-Paper-Scissors\n===================");
	    Scanner scn = new Scanner(System.in); 
	    System.out.print("Enter 0 for rock, 1 for paper, or 2 for scissors: ");
	    int A = scn.nextInt();
	    Random ran = new Random();
	    int B = ran.nextInt(3);
	    if (A < 0 || A >= 3) {
	        System.out.println("Invalid input!");
	        return;
	    }
	    System.out.println("Player picks " + name[A] + ".\nComputer picks " + name[B] + ".");
	    if (A == B) {
	    	System.out.println("Draw game!");
	    } else {
	        System.out.println((s[A] == B ? "Player" : "Computer") + " wins!");
	    }
    }
}