調試我的簡單java遊戲（Rock Paper Scissor）

-4

我創建了這個程序來運行無限次，要求用戶輸入一個選項（岩石或紙張或剪刀），這似乎工作正常。問題不是別人....如果或如果.... else語句得到滿足。無論我輸入什麼輸入，都會在else語句中輸出else語句（輸入一個有效的選項）。我無法找到我犯這樣的錯誤鏈接我的代碼下面.....在此先感謝。調試我的簡單java遊戲（Rock Paper Scissor）

import java.util.Scanner; 
import java.util.Random; 

public class apples { 
    public static void main(String args[]){ 

     Scanner input = new Scanner(System.in); 
     Random number = new Random(); 

     String rps[] = {"rock", "paper", "scissor"}; 
     String player; 
     String ai; 
     int rand, pscore=0, aiscore=0; 

     while(1 < 2){ 
     System.out.println("Take your pick \nrock \npaper \nscissor"); 
     player = input.nextLine(); 

     rand = number.nextInt(3); 
     ai = rps[rand]; 

     System.out.println(ai); 

     if(player == ai){ 
      pscore+=0; 
      aiscore+=0; 
      System.out.println("Your opponent chose " + ai + "\tYour score= "+ pscore + "\tOpponents score = "+aiscore); 
      System.out.print("\n"); 
      continue; 
     }else{ 
      if(player == "rock" && ai == "paper"){ 
       aiscore+=1; 
       pscore+=0; 
       System.out.println("Your opponent chose " + ai + "\tYour score= "+ pscore + "\tOpponents score = "+aiscore); 
       System.out.print("\n"); 
       continue; 
      }else if(player == "rock" && ai == "scissor"){ 
       pscore+=1; 
       aiscore+=0; 
       System.out.println("Your opponent chose " + ai + "\tYour score= "+ pscore + "\tOpponents score = "+aiscore); 
       System.out.print("\n"); 
       continue; 
      }else if(player == "paper" && ai == "rock"){ 
       pscore+=1; 
       aiscore+=0; 
       System.out.println("Your opponent chose " + ai + "\tYour score= "+ pscore + "\tOpponents score = "+aiscore); 
       System.out.print("\n"); 
       continue; 
      }else if(player == "paper" && ai == "scissor"){ 
       aiscore+=1; 
       pscore+=0; 
       System.out.println("Your opponent chose " + ai + "\tYour score= "+ pscore + "\tOpponents score = "+aiscore); 
       System.out.print("\n"); 
       continue; 
      }else if(player == "scissor" && ai == "rock"){ 
       aiscore+=1; 
       pscore+=0; 
       System.out.println("Your opponent chose " + ai + "\tYour score= "+ pscore + "\tOpponents score = "+aiscore); 
       System.out.print("\n"); 
       continue; 
      }else if(player == "scissor" && ai == "paper"){ 
       aiscore+=0; 
       pscore+=1; 
       System.out.println("Your opponent chose " + ai + "\tYour score= "+ pscore + "\tOpponents score = "+aiscore); 
       System.out.print("\n"); 
       continue; 
      }else{ 
       System.out.println("Enter a valid choice"); 
       System.out.print("\n"); 
       continue; 
      } 
     } 
     } 


    } 
}

來源

2016-11-11 ganesh vicky

你最好在這裏發佈你的代碼。它會一直在這裏，如果你這樣做，而鏈接的內容可能不會！ – LiXie

請考慮首先看這個：http://stackoverflow.com/questions/513832/how-do-i-compare-strings-in-java – Tim

謝謝你們。順便說一句，我不知道如何尋找我面臨的問題。無論如何，我更新了pastebin鏈接中的代碼，並且工作得很好。 –

相反的：

if(player == "rock" && ai == "paper"){ 
    ... 
}

使用

if(player.equals("rock") && ai.equals("paper")){ 
    ... 
}

這將適用於所有的代碼段，其比較字符串的。

來源

2016-11-11 14:33:00 LiXie

在java中，==測試引用相等：如果兩個對象實際上是相同的對象。兩個持有相同字符的字符串將失敗此檢查，這是您的邏輯中發生的事情。

見How do I compare strings in Java?

來源

2016-11-11 14:29:39 nvioli

調試我的簡單java遊戲（Rock Paper Scissor）

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