Java输入输出流文件路径问题

Question

各位，下面这个问题怎么解决，为什么使用不了相对路径？放在同一目录下应该可以使用相对路径？？

package Question;
import java.io.*;
public class Question2 {
    public static void main(String[] args) {
        File fRead = new File("src/Question/input.txt");
        File fWrite = new File("src/Question/output.txt");

        int lineNumber = 1;

        try { Writer out = new FileWriter(fWrite);
              BufferedWriter bufferWrite = new BufferedWriter(out);
              Reader in = new FileReader(fRead);
              BufferedReader bufferRead = new BufferedReader(in);


            String line;
            while ((line = bufferRead.readLine()) != null) {
                String numberedLine = lineNumber + ": " + line;
                bufferWrite.write(numberedLine);
                bufferWrite.newLine();
                lineNumber++;
            }
            bufferWrite.close();
            out.close();
            in = new FileReader(fWrite);
            bufferRead = new BufferedReader(in);
            String s = null;
            while((s= bufferRead.readLine())!=null){
                System.out.println(s);
            }
            bufferRead.close();
            in.close();
            System.out.println("文件内容已成功写入");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

Answer 1

这是因为直接写成input.txt是相对路径，是相对你的项目的路径，不是相对你当前这个类的路径，所以直接写成input.txt时，input.txt应该放在项目的根目录下，而不是src下。