Question

所以我的程序正常工作，但唯一的问题是当信息保存到.txt文件时，没有空格，例如文本文件说“paul214”时应该说“paul 2 1 4”，并且有人知道每次新玩家玩游戏时都要停止写文件吗？

import java.util.Random;
import java.util.Scanner;
import java.io.FileWriter;
import java.io.BufferedWriter;
import java.io.IOException;

public class GuessingGame3 {

    public static void main(String[] args)
    {

        Random generator = new Random(); //This is were the computer selects the Target

        int guess;
        int count = 0;
        int Target;
        String userName;
        String playagain;
        boolean play = true;
        int session = 0;
        int sessions = 0;
        int lowestScore = 6;

        Scanner consoleIn = new Scanner(System.in); 
        Scanner name = new Scanner(System.in); 

        System.out.println("Hello! Please enter your name:\n"); 
        userName= name.nextLine();//This is were the user enters his/her name

        System.out.println("Hello "+ userName + " :) Welcome to the game!\n");


        while (play == true) //This is where the game starts up
        {
            session++; //This counts the number of goes the player has 
            Target = generator.nextInt(100) + 1;
            System.out.println("Can you guess the number i'm thinking off? You will have 6 attempts to guess the correct number"); //This is where the computer asks the user to guess the number and how many guesses they will have

            do {
                guess = consoleIn.nextInt();
                count++;

                if (guess > Target)
                System.out.println("Sorry! Your guess was too high! Guess again :)"); //This is to help the player get to the answer 
                else 
                if (guess < Target)
                System.out.println("Sorry! Your guess was too low! Guess again :)"); //This is to help the player get to the answer 
               }        
                while(guess != Target && count <6);

                if(guess == Target) {
                System.out.println("Congratulations "+  userName + ", it took you "+ count +" attempts to guess correctly!"); //This tells the player that they got the correct answer and how many attempts it took
                    sessions++;
                        }   
                else 
                {
                System.out.println("Sorry "+ userName + ", You've used up all of your guesses! The correct answer was "+ Target + "!");  //This tells the player that they failed to find the number and then tells them what the correct answer  
                }
                while ( count < lowestScore)
                {
                    lowestScore = count;
                }
                {
                Scanner answer = new Scanner(System.in);
                System.out.println("Would you like to play again "+ userName +"? [Y/N]");//This asks the player if they would like to play again
                playagain = answer.nextLine();
               if(playagain.equalsIgnoreCase("Y"))//This is what happens if the player opts to play again
                {
                play = true;
                count = 0;


                } else if(playagain.equalsIgnoreCase("N"))//This is what happens if the player opts to exit the game
                {
                    play = false;
                    System.out.println("Thanks for playing "+ userName +"! :) Please come back soon!");
            try {//This is where the program writes the information about the player to a .txt file 
                BufferedWriter writer =
                    new BufferedWriter ( new FileWriter(".\\Records.txt"));

                    writer.write(userName);

                    writer.write(String.valueOf(session));

                    writer.write(String.valueOf(sessions));

                    writer.write(String.valueOf(lowestScore));

                    writer.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
                    //This displays the information saved to the .txt file to the player. 
                    System.out.println("The number of goes you had: "+ session +"");
                    System.out.println("The number of times you guessed correctly: "+ sessions +"");
                    System.out.println("Your lowest score was: "+ lowestScore +"!");
                    break;
                }

             }
        }
    }
}

Answer 1

如果您希望它们在那里，您需要显式添加空格：

writer.write(userName);
writer.write(" ");
writer.write(String.valueOf(session));
writer.write(" ");
writer.write(String.valueOf(sessions));
writer.write(" ");
writer.write(String.valueOf(lowestScore));

至于你的第二个问题，你可以像这样附加到文件中：

BufferedWriter writer = new BufferedWriter ( new FileWriter(".\\Records.txt", true));
writer.append("your content");

第二个参数true将FileWriter设置为追加模式。

Answer 2

如果需要空格，则需要在文本文件中写入空格。示例：

writer.write(userName + " ");

如果您不希望覆盖文本文件，请在实例化FileWriter对象时将append设置为true：

new FileWriter(".\\Records.txt", true)

Answer 3

您可以使用\t在文件中创建标签。

writer.write(userName+"\t");
................


  output = new BufferedWriter(new FileWriter(my_file_name, true));//you have to open the file in append mode

Answer 4

有没有人知道每次新的时候都要停止写文件玩家玩游戏？

public void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if (resultCode == RESULT_OK) { switch (requestCode) { // Gallery case Keys.PICTURE_REQ_CODE: Uri fileUri = data.getData(); cropIntent = new Intent(this,CropActivity.class); cropIntent.setData(fileUri); startActivityForResult(cropIntent,Keys.CROP_REQ_CODE); break; } } }

Answer 5

没有空格的原因是因为您没有指定添加它们。变量最后没有空格，因此它们不会这样写。这样做：

try {//This is where the program writes the information about the player to a .txt file 
    BufferedWriter writer = new BufferedWriter ( new FileWriter(".\\Records.txt"));

    writer.write(userName + " ");

    writer.write(String.valueOf(session) + " ");

    writer.write(String.valueOf(sessions) + " ");

    writer.write(String.valueOf(lowestScore));

    writer.close();
} catch (IOException e) {
    e.printStackTrace();
}

或者，您可以使用字符串连接来编写它：

try {//This is where the program writes the information about the player to a .txt file 
    BufferedWriter writer = new BufferedWriter ( new FileWriter(".\\Records.txt"));
    writer.write(userName + " " + String.valueOf(session) + " " + String.valueOf(sessions) + " " + String.valueOf(lowestScore));
    writer.close();
} catch (IOException e) {
    e.printStackTrace();
}

保存到txt文件java

5 个答案: