如何使用Java将文件中的特定行复制到新文件

String inputFile = "path/to/inputFile.txt";
String outputFile = "path/to/outputFile.txt";

FileReader fileReader = new FileReader(inputFile);
BufferedReader bufferedReader = new BufferedReader(fileReader);

FileWriter fileWriter = new FileWriter(outputFile);
BufferedWriter bufferedWriter = new BufferedWriter(fileWriter);

int[] lineNumbersToCopy = {2, 5};

String line;
int lineNumber = 1;

while ((line = bufferedReader.readLine()) != null) {
    if (isLineNumberToCopy(lineNumber, lineNumbersToCopy)) {
        // 复制当前行到新文件
        bufferedWriter.write(line);
        bufferedWriter.newLine();
    }
    lineNumber++;
}

boolean isLineNumberToCopy(int lineNumber, int[] lineNumbersToCopy) {
    for (int number : lineNumbersToCopy) {
        if (lineNumber == number) {
            return true;
        }
    }
    return false;
}

bufferedReader.close();
bufferedWriter.close();

import java.io.*;

public class FileLineCopier {
    public static void main(String[] args) {
        String inputFile = "path/to/inputFile.txt";
        String outputFile = "path/to/outputFile.txt";
        int[] lineNumbersToCopy = {2, 5};

        try {
            FileReader fileReader = new FileReader(inputFile);
            BufferedReader bufferedReader = new BufferedReader(fileReader);

            FileWriter fileWriter = new FileWriter(outputFile);
            BufferedWriter bufferedWriter = new BufferedWriter(fileWriter);

            String line;
            int lineNumber = 1;

            while ((line = bufferedReader.readLine()) != null) {
                if (isLineNumberToCopy(lineNumber, lineNumbersToCopy)) {
                    bufferedWriter.write(line);
                    bufferedWriter.newLine();
                }
                lineNumber++;
            }

            bufferedReader.close();
            bufferedWriter.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    static boolean isLineNumberToCopy(int lineNumber, int[] lineNumbersToCopy) {
        for (int number : lineNumbersToCopy) {
            if (lineNumber == number) {
                return true;
            }
        }
        return false;
    }
}