java中文件夹遍历与统计文件夹中文件总行数据

import java.io.File;

public class TestFile {

 public static void main(String[] args) {
  File f = new File("D:/Temp/LYLtim_OI");
  System.out.println(f.getName());
  list(f, 0);
 }

 static void list(File f, int lv) {
  File[] childs = f.listFiles();
  for (int i = 0; i < childs.length; i++) {
   for (int j = 0; j < lv; j++)
    System.out.print(" ┃");
   if (i == childs.length - 1)
    System.out.println(" ┗" + childs[i].getName());
   else
    System.out.println(" ┣" + childs[i].getName());
   if (childs[i].isDirectory())
    list(childs[i], lv + 1);
  }
 }

}

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

public class TestIO {

 static BufferedReader BR = null;
 static long Count = 0;

 public static void main(String[] args) throws IOException {
  Trvs(new File("D:/Temp/LYLtim_OI"));
  System.out.print(Count);
 }

 static void Trvs(File f) throws IOException {
  File[] childs = f.listFiles();
  for (int i = 0; i < childs.length; i++) {
   if (childs[i].isFile()) {
    BR = new BufferedReader(new FileReader(childs[i]));
    while (BR.readLine() != null) Count += 1;
   }
   else Trvs(childs[i]);
  }
 }

}