How to Check If a Directory Is Empty in Java

In this example, let’s us see how to determine whether a folder is empty in Java.

Source Code

package com.beginner.examples;

import java.io.File;
import java.io.IOException;

public class CheckDirectorExample {

	/**
	 * @param args
	 */
	public static void main(String[] args)throws IOException

	{
		//create dir Test
		File dir = new File("Test");
		//Show me the status
		System.out.println("Whether it was created successfully: "+dir.mkdir());
		//First check if it is a folder
		if(dir.isDirectory())
		{
			String[] strDir=dir.list();
			if(strDir.length == 0)
			{
				System.out.println("This folder is empty");
			}
			else {
				System.out.println("This folder is not empty");
			}
		}
		else
		{
			System.out.println("It's not a folder");
		}
	}

}

Output:

Whether it was created successfully: true
This folder is empty

References

Imported packages in Java documentation:

File
IOException