In this source code example, we show you how to create a directory in Java.

We use Files.createDirectory() method to create a new directory. If a file already exists, a FileAlreadyExistsException is thrown.

Java Create Directory Example

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;

public class JavaCreateDirectory {

    public static void main(String[] args) throws IOException {

        String fileName = "src/resources/sample.txt";

        Path path = Paths.get(fileName);

        if (!Files.exists(path)) {
            
            Files.createDirectory(path);
            System.out.println("Directory created");
        } else {
            
            System.out.println("Directory already exists");
        }
    }
}

References

https://docs.oracle.com/en/java/javase/18/docs/api/java.base/java/nio/file/Files.html

Related Java NIO Files Examples

• Java File Copy Example
• Java Create File Example
• Java Delete File Example
• Java File Size Example
• Java Get File Owner Example
• Java File Move Example
• Java Read File Example
• Java Write File Example
• Java Create Directory Example
  
• Java Create Multiple Directories Example
  
• Java List All Subdirectories From a Directory Example
  
• Java Append to File Example

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