Question

所以，我试图创建这个应用程序，但仍然在开始，但每次我运行它并尝试在Dictionary.txt文件中写入时，该文件将完全为空。它可以用于我已经制作的另一件事，但在这里它运行良好，终止，当我打开文件时，它是空白的，不成文的。目前在Eclipse Mars上，它没有给我任何错误（除了没有使用随机对象，但我打算稍后使用它。）

package mainPackage;

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

public class MainClass {

    private static FileWriter fw;
    private static BufferedWriter out;
    private static Scanner input;
    private static Scanner file;
    private static Random slc;

    public static void main(String[] args) throws IOException{

        fw = new FileWriter("C:/Users/ALAN_BARE/Desktop/Dictionary.txt" , true );
        input = new Scanner(System.in);
        file = new Scanner(new File("C:/Users/ALAN_BARE/Desktop/Dictionary.txt"));
        out = new BufferedWriter(fw);
        slc = new Random();

        String engword;
        String gerword;
        String response;

        System.out.println("What do you want to do, register words or play the game?");
        response = input.nextLine();

        if(response.contains("register")){
            System.out.println("Type yor english word:");
            engword = input.nextLine();
            System.out.println("Type the translation in German:");
            gerword = input.nextLine();
            out.write(engword);
            out.write(gerword);

            if(file.hasNextLine()){
                out.newLine();
                out.newLine();
                out.write(engword);
                out.write(" " + gerword);
            } else{
                out.write(engword);
                out.write(" " + gerword);
            }
        } else if(response.contains("Register")){

            System.out.println("Type yor english word:");
            engword = input.next();
            System.out.println("Type the translation in German:");
            gerword = input.next();

            if(file.hasNextLine()){
                out.newLine();
                out.newLine();
                out.write(engword);
                out.write(" " + gerword);

            } else{
                out.write(engword);
                out.write(" " + gerword);
            }
        }
    }
}

Answer 1

关闭BufferedWriter。 out.close()

建议：

将以下代码放在if-else块之外，因为这些是常见的

out.write(engword);
out.write(" " + gerword);

不会写入档案？

1 个答案: