Java Arraylist计算只读取文本文件的第一行

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;

public class ReadFileFirstLine {
    public static void main(String[] args) {
        String filePath = "path/to/your/file.txt"; // 替换为实际的文件路径

        ArrayList<String> lines = new ArrayList<>();

        try (BufferedReader br = new BufferedReader(new FileReader(filePath))) {
            String line;
            if ((line = br.readLine()) != null) {
                lines.add(line);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }

        System.out.println("第一行内容：" + lines.get(0));
    }
}