In Java, handling files and directories is a common task when working with file systems. The java.nio.file package provides a powerful API for performing file and directory operations. In this blog post, we will explore how to manipulate files and directories using the Java Filesystem wrapper class.

The Filesystem class

The java.nio.file.FileSystem class is an abstract class that serves as a wrapper for a file system. It provides methods for creating, deleting, copying, and moving files and directories.

To access the default filesystem, you can use the FileSystems class, which provides static methods for obtaining the default FileSystem. Additionally, you can create a new FileSystem by calling the FileSystems.newFileSystem() method, specifying the path to the file system you want to access.

Creating a new directory

To create a new directory, you can use the Files.createDirectory() method. This method takes a Path object representing the directory path and creates the directory in the file system. Here’s an example:

import java.nio.file.*;

public class DirectoryExample {
    public static void main(String[] args) throws Exception {
        Path directoryPath = Paths.get("path/to/new/directory");
        Files.createDirectory(directoryPath);
        System.out.println("Directory created successfully!");
    }
}

Creating a new file

To create a new file, you can use the Files.createFile() method. This method takes a Path object representing the file path and creates the file in the file system. Here’s an example:

import java.nio.file.*;

public class FileExample {
    public static void main(String[] args) throws Exception {
        Path filePath = Paths.get("path/to/new/file.txt");
        Files.createFile(filePath);
        System.out.println("File created successfully!");
    }
}

Copying a file

To copy a file, you can use the Files.copy() method. This method takes two Path objects representing the source and destination file paths and copies the file in the file system. Here’s an example:

import java.nio.file.*;

public class CopyExample {
    public static void main(String[] args) throws Exception {
        Path sourcePath = Paths.get("path/to/source/file.txt");
        Path destinationPath = Paths.get("path/to/destination/file.txt");
        Files.copy(sourcePath, destinationPath);
        System.out.println("File copied successfully!");
    }
}

Deleting a file or directory

To delete a file or directory, you can use the Files.delete() method. This method takes a Path object representing the file or directory path and deletes it from the file system. Here’s an example:

import java.nio.file.*;

public class DeleteExample {
    public static void main(String[] args) throws Exception {
        Path path = Paths.get("path/to/file/or/directory");
        Files.delete(path);
        System.out.println("File or directory deleted successfully!");
    }
}

Conclusion

The Java Filesystem wrapper class provides a convenient and straightforward way to manipulate files and directories in Java. By using the java.nio.file package and the FileSystem class, you can perform various file system operations with ease.

#java #filesystem #filehandling #javaio