Java 编程 - 石头剪刀布的初学者

Question

如果可能的话，需要一些指导。 Java 新手。不知道为什么下面的石头、布、剪刀游戏代码不起作用。如有任何建议或建议，我们将非常欢迎。我知道这个伟大的论坛上有很多例子 - 但我仍在掌握基础知识。谢谢。

import java.util.*;         
import java.util.Scanner;   
import java.util.Random;     
public class Game       
{                           
    public static void main (String[] args){     

        int NumberofRoundsPlayed;        
        int NumberofRoundsWonbyHuman = 0;   

        Scanner Keyboard = new Scanner (System.in       

        System.out.println("DO YOU WANT TO PLAY ROCK PAPER SCISSORS- Y/N");                       
        String HumanPlaying  = Keyboard.nextLine();


        if(HumanPlaying ==("No"))
        {
            System.out.println("Game Over");
            System.exit(0);}
        }       

    int Paper = 1;  
    int Scissor = 2;    
    int Rock  = 3;      

    int HumanSelection;
    int humanroundsWon =0;

    System.out.println("HOW MANY ROUNDS DO YOU WANT TO PLAY");
    NumberofRoundsPlayed = Keyboard.nextInt();      

    while  (NumberofRoundsPlayed <= NumberofRoundsPlayed +1)  
    {
        Scanner Computer = new Scanner (System.in);
        Random rand = new Random();

        int ComputerChoice =Computer.nextInt(3)+1; 
        System.out.println(ComputerChoice);

      System.out.println("Select 1 for Paper, 2 for Scissor or 3 for Rock");                    
        HumanSelection = Keyboard.nextInt();

        //SEE WHO WINS

        If (ComputerChoice== 1)
        {
            If (HumanSelection==1)
            {
            System.out.println("Computer and Human Have Tied");
            }   Else if (HumanSelection==2)
            {
                System.out.println("Person Wins");
                humanroundsWon == humanroundsWon+1;
            }
            Else if (HumanSelection==3)
            {
                System.out.println("Computer Wins");
            }

        Else if (ComputerChoice==2)
        {
            If (HumanSelection==1)
            {
                System.out.println("computer Wins");

            }
            Else if (HumanSelection==2)
            {
            System.out.println("Computer and Person Have Tied");
            }
            Else if (HumanSelection==3)
            {
                System.out.println("Person Wins");
                humanroundsWon == humanroundsWon+1;

            }
        }

        Else if (ComputerChoice==3)
        {

    }
            If (HumanSelection==1)
            {
                System.out.println("Person Wins");
                humanroundsWon == humanroundsWon+1;
            }

        Else if (HumanSelection==2)
        {
            {       System.out.println("Computer Wins");
            }

            Else if (HumanSelection==)
            {
                    System.out.println("Tie");  
                    roundsWon == roundsone+1;
            }
        }
        }
    }
    }
 }

        System.out.println("Game Over");
            System.exit(0);}

Answer 1

如果无法编译，Scanner Keyboard = new Scanner (System.in 是一个不完整的语句。