How to realize simple fist guessing Mini Game by java

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User.java

Import java.util.Scanner;public class User {String name; int score; public int showFist () {System.out.println ("Please punch 1. Scissors\ T2. Stone\ T3. Cloth "); Scanner input=new Scanner (System.in); int choice=input.nextInt (); if (choice==1) {System.out.println (" you are out of scissors ");} else if (choice==2) {System.out.println (" you are out of rock ");} else if (choice==3) {System.out.println (" you are out of paper ") } else {System.out.println ("incorrect input!") ;} return choice;}}

Computer.java

Public class Computer {String name; int score; public int showFist () {int choice = (int) (Math.random () * 3) + 1; / generate the random number if (choice = = 1) {System.out.println (name + "out of the scissors");} else if (choice = = 2) {System.out.println (name + "out of the rock") } else if (choice = = 3) {System.out.println (name + "you are out of cloth");} else {System.out.println ("incorrectly typed!" );} return choice;}}

Game.java

Import java.util.Scanner;public class Game {User user; / / user Computer computer; / / computer int count; / / record the number of battles / / initialize: set your own name, opponent's name, score 0 public void init () {System.out.println ("Please enter your own name"); Scanner input = new Scanner (System.in); String name = input.next () User=new User (); / / object initializes user.name=name; user.score=0; System.out.println ("Please select your opponent:\ N1. Zhang San\ T2. Li Si\ T3. ); int choice = input.nextInt (); computer=new Computer (); / / object initialization computer.score=0; switch (choice) {case 1: computer.name= "Zhang San"; case 2: computer.name= "Li Si"; case 3: computer.name= "Wang Wu" Break; default: System.out.println ("incorrect input!") ;} System.out.println ("you choose to fight TA:" + computer.name);} public void start () {init (); Scanner input=new Scanner (System.in); String isContinue = null; do {int userFist = user.showFist (); / / people punch int chomputerFist = computer.showFist () / / computer punch calcResult (userFist, chomputerFist); System.out.println ("do you want to continue?" Y (continue) / other (end)); isContinue=input.next ();} while ("y" .equals (isContinue)); showResult (user,computer); / / Show the final result} / / calculate the result of each round public void calcResult (int userFist,int computerFist) {/ / "1. Scissors\ T2. Stone\ T3. Cloth "if ((userFist==1&&computerFist==3) | | (userFist==2&&computerFist==1) | | (userFist==3&&computerFist==2)) {System.out.println (" you win "); user.score++;} else if ((userFist==3&&computerFist==1) | | (userFist==1&&computerFist==2) | | (userFist==2&&computerFist==3)) {System.out.println (" you lost "); computer.score++ } else {System.out.println ("your tie");}} / / calculate the final result public void showResult (User user,Computer computer) {System.out.println (user.name + "\ t" + user.score); System.out.println (computer.name + "\ t" + computer.score) If (user.score > computer.score) {System.out.println ("Congratulations, final victory");} else if (user.score