刀石头布游戏 java版

import java.util.Scanner;
public class Game{
  void welcome(){
   println("欢迎来到剪刀石头布游戏");
  }
 Choice getUserChoice(){
  println("请选择\t[1]剪刀\t[2]石头\t[3]布");
  Scanner sc= new Scanner(System.in);
  int userChoice=Integer.parseInt(sc.nextLine());
  while(userChoice>3||userChoice<1){
   println("您输入的不合法，请重新输入");
   userChoice=Integer.parseInt(sc.nextLine());
   }
  return new Choice(userChoice);
  }
 Choice getComputerChoice(){
  return new Choice((int)(3*Math.random())+1);
  }
 void showResult(Choice userChoice,Choice computerChoice){
  int re=userChoice.compareTo(computerChoice);
  if(re==0){
   println("平了!您好,您输入的是:"+userChoice.getText());
   }else if(re==1){
   println("恭喜您获胜了！您输入的是:"+userChoice.getText()+"\t电脑输入的是:"+computerChoice.getText());
   }
  else {
  println("抱歉您输了！您输入的是:"+userChoice.getText()+"\t电脑输入的是:"+computerChoice.getText());
   }
  }
  void println(String s){
   System.out.println(s);
  }
  void start(){
  welcome();
  Choice userChoice=getUserChoice();
  Choice computerChoice=getComputerChoice();
  showResult(userChoice,computerChoice);
  }
  
 public static void main(String[] args){
  new Game().start();
  }
}
class Choice{
 String s[]={"剪刀","石头","布"};
 int value;
 Choice(int a){
  value=a;
 }
 String getText(){
  return s[value-1];
 }
 // 0为 平 1为 赢 -1为 输
 int compareTo(Choice c){
  if(value==c.value){
  &nb