JAVA文件扫描（递归）的实例代码

import java.io.File;public class Scan {  public static void main(String[] args) {    String fileName = "D://Program Files//腾讯游戏//英雄联盟" + File.separator;    File f = new File(fileName);    scan(f);  }  public static void scan(File f) {    if (f != null) {      if (f.isDirectory()) {        File[] fileArray = f.listFiles();        if (fileArray != null) {          for (int i = 0; i < fileArray.length; i++) {            // 递归调用            scan(fileArray[i]);          }        }      } else {        System.out.println(f);      }    }  }}

import java.io.BufferedReader;import java.io.File;import java.io.FileNotFoundException;import java.io.FileReader;public class TextReader {  public static void main(String[] args) {    String fileName = "E://JavaWorkSpace//Workspaces//eclipse" + File.separator;    File f = new File(fileName);    scan(f);  }  public static void scan(File f) {    if (f != null) {      if (f.isDirectory()) {        File[] fileArray = f.listFiles();        if (fileArray != null) {          for (int i = 0; i < fileArray.length; i++) {            // 递归调用            scan(fileArray[i]);          }        }      } else {        if ((f.getName().substring(f.getName().lastIndexOf(".") + 1, f            .getName().length())).equals("java")) {          FileReader reader;          try {            Thread.sleep(3000);            reader = new FileReader(f);            BufferedReader Bufferedreader = new BufferedReader(                reader);            String content = "";            while ((content = Bufferedreader.readLine()) != null) {              System.out.println(content);            }          } catch (Exception e) {            // TODO Auto-generated catch block          }        }      }    }  }}