Code example of how to read files recursively in Java

/**

 * 列出指定目录的全部内容

 * */

import java.io.*;

class Recursion{

  public static void main(String[] args) {

    String fileName="D:"+File.separator;

    File f=new File(fileName);

    printFile(f);

  }

  public static void printFile(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

            print(fileArray[i]);

          }

        }

      }

      else{

        System.out.println(f);

      }

    }

  }

}