Write this program using an IDE. Comment and style the code according to CS 200 Style Guide. Submit the source code files (.java) below. Make sure your source files are encoded in UTF-8. Some strange compiler errors are due to the text encoding not being correct. This lab asks you to create a text game Rock Paper Scissors. The rule of the game: There are two players in this game and they can choose Rock, Paper, or Scissors each time. Rock beats Scissors, Paper beats Rock and Scissors beat Paper. Your program needs to prompt a user to choose an action (Rock, Paper, or Scissors) and save their choice. The program randomly chooses an action (Hint: use .nextInt() to generate random integers in the range of [1,3]. 1 indicates Rock, 2 indicates Paper and 3 indicates Scissors.) Then the program determines who is the winner. When input is R Please select one of [R/P/S]: You chose: Rock I chose: Scissors Rock beats scissors - you win! If the user enters the lowercase, your program can still recognize. When input is p Output should be Please select one of [R/P/S]: You chose: Paper I chose: Scissors Scissors beat paper - you lose! If the user enters invalid input, the program will give an error message and set the default choice as Rock When input is v Output should be Please select one of [R/P/S]: Invalid choice! Defaulting to Rock. I chose: Scissors Rock beats scissors - you win! If the user has the same result as the computer, your program should output: A Tie!

import java.util.Scanner; //to accept input from user

import java.util.Random; //to generate random numbers

public class Main { //class name

   public static void main(String[] args) { //main method

       System.out.println("Please select one of [R/P/S]: "); //prompts user to select a choice

       Scanner scanner = new Scanner(System.in); //reads input choice

       String playerChoice = scanner.next().toUpperCase().replace(" ", ""); //converts the choice to upper case and stores it in playerChoice

       if (playerChoice.equals("R") || playerChoice.equals("P") || playerChoice.equals("S")) { // if player choice is a valid choice

           results(CompChoice(), playerChoice);    // calls method to compute result of game

   } else { //if player enters invalid choice

      System.out.println("\nInvalid choice!");     }    }    //error message

   private static String CompChoice() {  //to generate computer choice  

           Random generator = new Random();  //to generate random numbers

           int comp = generator.nextInt(3)+1; //generates 3 random numbers

           String compChoice = "";  //to store computer choice

           switch (comp) { //checks the random number for corresponding computer choice

           case 1: //1 is for Rock

               compChoice = "Rock"; //sets compChoice to Rock

               break;

            case 2: //random  number 2 is for Paper

               compChoice = "Paper"; //sets compChoice to Paper

               break;

            case 3: //random  number 3 is for Scissors

               compChoice = "Scissors"; //sets compChoice to  Scissors

               break;         }        

       return compChoice;      } //returns computer choice

   private static void results(String compChoice, String playerChoice) { //method to compute result

        if(playerChoice.equals("R")) //if playerChoice is equal to R

       { playerChoice = "Rock"; //stores Rock to playerChoice

        System.out.println("You chose: Rock");} //displays player choice

        else if(playerChoice.equals("P")) //if playerChoice is equal to P

       { playerChoice = "Paper";        //stores Paper to playerChoice

               System.out.println("You chose: Paper");} //displays player choice

         else  //if playerChoice is equal to S

        { playerChoice="Scissors"; //stores Scissors to playerChoice

          System.out.println("You chose: Scissors"); }  //displays player choice

 System.out.println("I chose: " + compChoice); //displays computer choice

       if (compChoice.equals(playerChoice)) { //if compChoice is equal to playerChoice          

          System.out.println("a tie!"); //its a tie if computer and player choice is the same

          System.exit(1);  }//exits on tie    

        boolean youWin = false; //variable to check if player wins      

       if (compChoice.equals("Rock")) { //if computer choice is Rock

          if (playerChoice.equals("Paper")) //if player choice is Paper

          {System.out.println("Paper beats Rock.");

              youWin = true;} //player wins to youWin is set to true

        else if(playerChoice.equals("Scissors"))  { //if player choice is Scissors

              System.out.println("Rock beats scissors.");

              youWin = false;}     }   //player loses to youWin is set to false

       if (compChoice.equals("Paper")) { //if computer choice is Paper

          if (playerChoice.equals("Rock")) //if player choice is Rock

          {System.out.println("Paper beats Rock.");

              youWin = false;}  //player loses to youWin is set to false

         else if(playerChoice.equals("Scissors")) { //if player choice is Scissors

              System.out.println("Scissors beats Paper.");

              youWin = true;} }  //player wins to youWin is set to true    

       if (compChoice.equals("Scissors")) { //if computer choice is Scissors

          if (playerChoice.equals("Rock")) //if player choice is Rock

          {System.out.println("Rock beats Scissors.");

              youWin = true;} //player wins to youWin is set to true

         else if(playerChoice.equals("Paper")) { //if player choice is Paper

              System.out.println("Scissors beats Paper.");

              youWin = false;} }  //player loses to youWin is set to false

            if (youWin) //if player wins means if youWin is true

                System.out.println("you win!"); //declare player to be winner

           else //if player loses means if youWin is false

                System.out.println("you lose!");     } } //declare player to lose

Explanation:

The program is well explained in the comments attache with each line of program. The program has three methods. One is the main method to start the game and prompts user to enter a choice and converts the user input choice to upper case. One is CompChoice method that generates three random numbers and uses switch statement to set 1 for Rock, 2 for Paper and 3 for Scissors . One method is results that takes computer choice and player choice as parameters to decide the winner. It uses if else statements to check if choice of user wins from choice of computer or vice versa. It uses a boolean variable youWin which is set to true when player choice beats computer choice otherwise is set to false. At the end if youWin is true then the player is declared winner otherwise not. The screenshot of the program output is attached.

answer; i believe the correct answer is layers;

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