Java 实例 - 判断目录是否为空

/*
 author by w3cschool.cc
 Main.java
 */import java.io.File;public class Main {
   public static void main(String[] args) {
      File file = new File("/data");
      if (file.isDirectory()) {
         String[] files = file.list();
         if (files.length > 0) {
            System.out.println("目录 " + file.getPath() +
            " 不为空！");
         }
      }
   }}