Java I/O - 如何检查目录是否为空

   

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("The " + file.getPath() + " is not empty!");
      }
    }
  }
}