please help me i don't know what i am doing wrong. my if statement will not post.

package javaapplication16; import java.util.Scanner; import java.util.Random; /** * * @author Insti */ public class JavaApplication16 {

/** * @param args the command line arguments */ public static void main(String[] args) { String personPlay; String computerplay; int computer; Scanner scan = new Scanner(System.in); Random generator = new Random(); System.out.print("Enter rock, paper, of scissors: "); personPlay = scan.next(); personPlay = personPlay.toUpperCase(); computer = generator.nextInt(3); switch (computer) { case 0: { computerplay = "rock"; break; } case 1: { computerplay = "paper"; break; } case 2: { computerplay = "scissor"; break; } default: { computerplay = "choose between rock, paper, scissors"; } } System.out.println ("The Computer plays: " + computerplay); if (personPlay.equals(computerplay)) { System.out.println("It's a tie"); } else if (personPlay.equals("rock")) { if (computerplay.equals("scissor")) System.out.println("Rock beats Scissor. You Win!"); else if (computerplay.equals("paper")) System.out.println("Paper beats rock. you Lose!"); } else if (personPlay.equals("paper")) { if (computerplay.equals("scissor")) System.out.println("Scissor beats Paper. You Win!"); else if (computerplay.equals("rock")) System.out.println("Paper beats rock. you Lose!"); } else if (personPlay.equals("scissor")) { if (computerplay.equals("paper")) System.out.println("Scissor beats paper. You Win!"); else if (computerplay.equals("Rock")) System.out.println("Rock beats scissor. you Lose!"); } else { System.out.println("Invalid user input"); } } }

Write a program that lets the user play the game of Rock, Paper, Scissors against the computer The program should work as follows. 1. When the program begins, a random number in the range of 1 through 3 is generated. If the number is 1, then the computer has chosen rock. If the number is 2, then the computer has chosen paper. If the number is 3, then the computer has chosen scissors. (Don't display the computer's choice yet.) 2. The user enters his or her choice of "rock", "paper", or "scissors" at the keyboard (Youcan use a menu if you prefer.) 3. The computer's choice is displayed 4. A winner is selected according to the following rules a) If one player chooses rock and the other player chooses scissors, then rock wins. (The rock smashes the scissors.) b) If one player chooses scissors and the other player chooses paper, then scissors wins. (Scissors cuts paper.) c) If one player chooses paper and the other player chooses rock, then paper wins. (Paper wraps rock.) d) If both players make the same choice, the game must be played again to determine the winner Be sure to divide the program into methods that perform each major task