JAVA 实现 UNIX tail -f 命令功能

<dependency>
    <groupId>commons-iogroupId>
    <artifactId>commons-ioartifactId>
    <version>2.5version>
dependency>

 
import java.io.File;
import org.apache.commons.io.input.Tailer;
import org.apache.commons.io.input.TailerListenerAdapter;
 
public class TailerApp {
 
    private static class NewLineListener extends TailerListenerAdapter {
 
        @Override
        public void handle(String line) {
            System.out.println(line);
        }
    }
 
    private final File file;
    private final long delay;
    private final TailerListenerAdapter newLineHandler;
 
    public TailerApp(File file, long delay, TailerListenerAdapter newLineHandler) {
        this.file = file;
        this.delay = delay;
        this.newLineHandler = newLineHandler;
    }
 
    public void run() {
        Tailer tailer = new Tailer(file, newLineHandler, delay);
        tailer.run();
    }
 
    public static void main(String[] args) {
        TailerApp tailer = new TailerApp(new File("C:\\inetpub\\logs\\LogFiles\\W3SVC1\\u_ex220730.log"), 500, new NewLineListener());
        tailer.run();
    }
}