How to check if a directory exists in java

There are many ways to check for the directory’s existence in Java.

The use of  File.isDirectory() is to check if the file denoted by a specified path is a directory or not. it returns true if the directory exists; false otherwise.

1). Using File.isDirectory()


package com.javacodestuffs.file.io;

import java.io.File;

public class CheckDirJava
{
	public static void main(String[] args) {

		String directoryPath = "/jvm/orcle-java-8/bin/";
		File file = new File(directoryPath);

		if (file.isDirectory()) {
			System.out.println("Directory exist");
		} else {
			System.out.println("Directory doesn't exist.");
		}
	}
}

2). Using NIO

From Java 7 onward, we can make use of java.nio.file.Files which provides several static methods that operate on files, directories, or other types of files. To simply check for a directory’s existence, we can use the method of java.nio.file.Files the class. The Files.isDirectory() returns true when your path points to a directory.



package com.javacodestuffs.file.io;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.io.File;

public class CheckDirUsingNIO {
	public static void main(String[] args) {

		String directoryPath = "/jvm/orcle-java-8/bin/";

		Path path = Paths.get(directoryPath);
		boolean isDir = Files.isDirectory(path);

		if (isDir) {
			System.out.println("Directory exist");
		} else {
			System.out.println("Directory doesn't exist.");
		}
	}
}

In this article, we have seen  How to check if a directory exists in java with example. All source code in the article can be found in the GitHub repository.