java 递归，打印文件夹下所有的文件

import java.io.File;

public class FileDemo2 {
  public static void main(String[] args) {
//    File file=new File("d:\\test");
    File file=new File("D:\\Appium-Python-Client-0.17");
    getFileAll(file);
  }
  //获取制定目录以及子目录中的所有的文件
  public static void getFileAll(File file) {
    File[] files=file.listFiles();
    //遍历当前目录下的所有文件和文件夹
    for (File f:files) {
      //判断当前遍历到的是否为目录
      if(f.isDirectory()) {
        //是目录，继续获取这个目录下的所有文件夹
        getFileAll(f);
      }else {
        //不是目录，说明当前f就是文件，那么就打印出来
        System.out.println(f);
      }
    }
  }

}

打印结果：

D:\Appium-Python-Client-0.17\appium\common\exceptions.py
D:\Appium-Python-Client-0.17\appium\common\__init__.py
D:\Appium-Python-Client-0.17\appium\saucetestcase.py
D:\Appium-Python-Client-0.17\appium\webdriver\common\mobileby.py
D:\Appium-Python-Client-0.17\appium\webdriver\common\multi_action.py
D:\Appium-Python-Client-0.17\appium\webdriver\common\touch_action.py
D:\Appium-Python-Client-0.17\appium\webdriver\common\__init__.py
D:\Appium-Python-Client-0.17\appium\webdriver\connectiontype.py
D:\Appium-Python-Client-0.17\appium\webdriver\errorhandler.py
D:\Appium-Python-Client-0.17\appium\webdriver\mobilecommand.py
D:\Appium-Python-Client-0.17\appium\webdriver\switch_to.py
D:\Appium-Python-Client-0.17\appium\webdriver\webdriver.py
D:\Appium-Python-Client-0.17\appium\webdriver\webelement.py
D:\Appium-Python-Client-0.17\appium\webdriver\__init__.py
D:\Appium-Python-Client-0.17\appium\__init__.py
D:\Appium-Python-Client-0.17\Appium_Python_Client.egg-info\dependency_links.txt
D:\Appium-Python-Client-0.17\Appium_Python_Client.egg-info\PKG-INFO
D:\Appium-Python-Client-0.17\Appium_Python_Client.egg-info\requires.txt
D:\Appium-Python-Client-0.17\Appium_Python_Client.egg-info\SOURCES.txt
D:\Appium-Python-Client-0.17\Appium_Python_Client.egg-info\top_level.txt
D:\Appium-Python-Client-0.17\build\lib\appium\common\exceptions.py
D:\Appium-Python-Client-0.17\build\lib\appium\common\__init__.py
D:\Appium-Python-Client-0.17\build\lib\appium\saucetestcase.py
D:\Appium-Python-Client-0.17\build\lib\appium\webdriver\common\mobileby.py
D:\Appium-Python-Client-0.17\build\lib\appium\webdriver\common\multi_action.py
D:\Appium-Python-Client-0.17\build\lib\appium\webdriver\common\touch_action.py
D:\Appium-Python-Client-0.17\build\lib\appium\webdriver\common\__init__.py
D:\Appium-Python-Client-0.17\build\lib\appium\webdriver\connectiontype.py
D:\Appium-Python-Client-0.17\build\lib\appium\webdriver\errorhandler.py
D:\Appium-Python-Client-0.17\build\lib\appium\webdriver\mobilecommand.py
D:\Appium-Python-Client-0.17\build\lib\appium\webdriver\switch_to.py
D:\Appium-Python-Client-0.17\build\lib\appium\webdriver\webdriver.py
D:\Appium-Python-Client-0.17\build\lib\appium\webdriver\webelement.py
D:\Appium-Python-Client-0.17\build\lib\appium\webdriver\__init__.py
D:\Appium-Python-Client-0.17\build\lib\appium\__init__.py
D:\Appium-Python-Client-0.17\dist\Appium_Python_Client-0.17-py2.7.egg
D:\Appium-Python-Client-0.17\docs\roadmap.md
D:\Appium-Python-Client-0.17\docs\touch_actions.md
D:\Appium-Python-Client-0.17\LICENSE
D:\Appium-Python-Client-0.17\MANIFEST.in
D:\Appium-Python-Client-0.17\PKG-INFO
D:\Appium-Python-Client-0.17\README.txt
D:\Appium-Python-Client-0.17\setup.cfg
D:\Appium-Python-Client-0.17\setup.py