How can Java read file content in real time?

In Java, you can use the BufferedReader class to read file content in real-time. Here’s an example code:

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

public class RealtimeFileReader {
    public static void main(String[] args) {
        String filePath = "path/to/file.txt";

        try (BufferedReader br = new BufferedReader(new FileReader(filePath))) {
            String line;
            while (true) {
                if ((line = br.readLine()) != null) {
                    // 处理每一行的内容
                    System.out.println(line);
                } else {
                    // 当文件内容读取完毕，可以进行相应的处理
                    // 例如：休眠一定时间后再次读取文件内容
                    Thread.sleep(1000);
                }
            }
        } catch (IOException | InterruptedException e) {
            e.printStackTrace();
        }
    }
}

In the code above, BufferedReader is used to read each line of a file and print it out. After all the content in the file has been read, additional actions can be taken, such as pausing for a certain amount of time before reading the file content again.