ChoiceAnswer.java

public class ChoiceAnswer{

String texts[]={"石头","剪刀","布"};

int value; //【1】石头\t【2】剪刀\t【3】布

String getText(){

return texts[value-1];

}

ChoiceAnswer(int value){

this.value=value;

}

/**

返回0表示平手，返回1表示赢，返回-1表示输

*/

int compTo(ChoiceAnswer c){

if(value==c.value){

return 0;

}

if(value+1==c.value||(value==3&&c.value==1)){

return 1;

}

return -1;

}

}

Game.java

import java.util.Scanner;  public class Game{ void p(String s){ System.out.println(s); } void showWelcome(){ p("欢迎使用······"); p("请选择：【1】石头\t【2】剪刀\t【3】布");  } ChoiceAnswer getUserChoice(){  Scanner sc = new Scanner(System.in);  int userChoice=Integer.parseInt(sc.nextLine());  while(userChoice<1||userChoice>3){  p("你输入的不正确！请重新输入！");  userChoice=Integer.parseInt(sc.nextLine());  }    return new ChoiceAnswer(userChoice); } ChoiceAnswer getComputerChoice(){ int computerChoice=(int)((Math.random()*3)+1);  return new ChoiceAnswer(computerChoice); } void showResult(ChoiceAnswer userChoice,ChoiceAnswer computerChoice){ int result=userChoice.compTo(computerChoice); if(result==0){ System.out.println("平手,您和电脑均选择了："+userChoice.getText()); } else if(result==1){ System.out.println("恭喜,您赢了！您选择了："+userChoice.getText()+";      电脑选择了："+computerChoice.getText()); } else{ System.out.println("对不起,您败了！您选择了："+userChoice.getText()+";电脑选择了："+computerChoice.getText()); } } void start(){ showWelcome();  ChoiceAnswer userChoice=getUserChoice();  ChoiceAnswer computerChoice=getComputerChoice();  showResult(userChoice,computerChoice); } public static void main(String a[]){ new Game().start(); } }