Question

我正在研究使用网络概念实现的牛和公牛游戏。服务器和客户端程序都是用java编写的

我的服务器程序是 import java.io。*;

import java.net.*;

import java.util.Random;

 import java .util.Scanner;

 import java.lang.*;



class Server3{

 public static void main(String args[])

throws Exception

{

 ServerSocket  ss=new ServerSocket(888);

 Socket  s=ss.accept();

 System.out.println("connection established");

 DataOutputStream dos=new DataOutputStream(s.getOutputStream());

   PrintStream ps=new PrintStream(s.getOutputStream());

 BufferedReader br=new BufferedReader(new InputStreamReader(s.getInputStream()));

BufferedReader kb=new BufferedReader(new InputStreamReader(System.in));

String str="Welcome to COWS and BULLS Game";

 ps.println(str);

 String str1="Rules are :You need to guess a 3 digit number without duplicates";

 String str2="There are 2 variables namely Cows and Bulls";

String str3="Cows will give you the count of no of correct int in ur guess and bulls gives the   no of correct positions";
String str4="When the count in bulls is 3 you need to enter null";

String str5="now enter a 3 digit number";

 ps.println(str1);

ps.println(str2);

ps.println(str3);

 ps.println(str4);

 ps.println(str5);


Random gen=new Random();
int target=0;

while(hasDupes(target= (gen.nextInt(900) + 100)));

String targetStr = target +"";
boolean guessed = false;
Scanner input = new Scanner(System.in);
int guesses = 0;

do{
    int bulls = 0;
    int cows = 0;
    String n;
    n=br.readLine();
    guesses++;
    String guessStr=n+"";

    for(int i= 0;i < 3;i++) {
        if(guessStr.charAt(i) == targetStr.charAt(i)) {
                    bulls++;
        }
    }

    for(int i= 0;i < 3;i++) {
            if(targetStr.contains (guessStr.charAt(i)+"")) {
                    cows++;
        }
    }

    if(bulls == 3) {
        guessed = true;
     dos.writeBoolean(guessed);
    }
    else
    {
     String Cows=cows+"";
     String Bulls=bulls+"";
     ps.println(Cows);
     ps.println(Bulls);
     dos.writeBoolean(guessed);
    }
} while(!guessed);
 String Guesses=guesses+"";

 ps.println(Guesses);

 }

 public static boolean hasDupes(int num){

    boolean[] digs = new boolean[10];
    while(num > 0){
        if(digs[num%10]) return true;
        digs[num%10] = true;
        num/= 10;
    }
    return false;
     }

 }

我的客户端程序的一部分是：

 import java.io.*;

 import java.net.*;

class Client3

{

public static void main(String args[])

throws Exception

{

Socket s=new Socket("192.168.1.36",888);

 DataOutputStream dos=new DataOutputStream(s.getOutputStream());

DataInputStream dis=new DataInputStream(s.getInputStream());

BufferedReader br=new BufferedReader(new InputStreamReader(s.getInputStream()));

BufferedReader kb=new BufferedReader(new InputStreamReader(System.in));

String str,str1,str2,str3,str4,str5;

str=br.readLine();

str1=br.readLine();

 str2=br.readLine();

str3=br.readLine();

str4=br.readLine();

str5=br.readLine();

 System.out.println(str);

System.out.println(str1);

 System.out.println(str2);

 System.out.println(str3);

  System.out.println(str4);


 System.out.println(str5);

 String Cows,Bulls;

 String n;



boolean guessed=false;
do
  {
   n=kb.readLine();
   dos.writeBytes(n+"\n");
   Cows=br.readLine();
   Bulls=br.readLine();
   System.out.println(Cows+"cows and"+Bulls+"bulls");
   guessed=br.readBoolean();
  } while(!guessed);

  String Guesses;

  Guesses=br.readLine();

     System.out.println("you won after"+Guesses+"guesses");

   dos.close();

 br.close();

    kb.close();

    s.close();  


    }

     }

我的服务器需要向我的客户端发送一个布尔值，客户端需要读取服务器发送的布尔值。我不清楚如何从客户端和服务器发送和读取布尔值的概念。

我的客户端错误是

 Client3.java:36: error: method readBoolean in class DataInputStream cannot be ap
  plied to given types;
 dis.readBoolean(guessed);
     ^
   required: no arguments
   found: boolean
   reason: actual and formal argument lists differ in length
   1 error

我不熟悉如何发送和读取布尔值的方法。请帮助我

Answer 1

可能的原因：

<强> 1 即可。尝试使用变量而不声明它。＆LT; ---

<强> 2 即可。拼写错误的类或方法名称（请记住，Java区分大小写）。

第3 即可。使用的参数与方法的签名不匹配。

<强> 4 即可。使用导入声明未正确引用打包的类。

由于我无法在声明变量br和输出的任何地方找到，因此您的错误是因为未在代码中声明变量br和output

Source and Read More

如何发送布尔值

1 个答案: