引用他人代码去掉前面行数

import java.io.*;

public class ReadFile {
  public static void main(String[] args) {
  String strFile ="c:/app.txt";
      File file = new File(strFile);
    try {
      // Create a buffered reader to read each line from a file.
      BufferedReader in = new BufferedReader(new FileReader(file));
      String s;
      // Read each line from the file and echo it to the screen.
      while ((s = in.readLine()) != null) {
      int subPosition= s.indexOf(".");
      String snew= s.substring(subPosition+1);
      System.out.println(snew);
      }
      // Close the buffered reader, which also closes the file reader.
      in.close();
    } catch (FileNotFoundException e1) {
    // If this file does not exist
      System.err.println("File not found: " + file);
    } catch (IOException e2) {
    // Catch any other IO exceptions.
      e2.printStackTrace();
    }
  }
}