Java示例在目录中显示文件

import java.io.*;



public class Main {

   public static void main(String[] args) {

      File dir = new File("C:");

      String[] children = dir.list();



      if (children == null) {

         System.out.println( "Either dir does not exist or is not a directory");

      } else {

         for (int i = 0; i< children.length; i++) {

            String filename = children[i];

            System.out.println(filename);

         }

      }

   }

}