Java在每行中搜索字符串关键字

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

public class StringSearch {
    public static void main(String[] args) {
        String filePath = "path/to/text/file.txt";
        String keyword = "关键字";

        try (BufferedReader reader = new BufferedReader(new FileReader(filePath))) {
            String line;
            int lineNumber = 1;

            while ((line = reader.readLine()) != null) {
                if (line.contains(keyword)) {
                    System.out.println("找到关键字 \"" + keyword + "\"，位于第 " + lineNumber + " 行：");
                    System.out.println(line);
                }

                lineNumber++;
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}