Since file validation inherently involves path resolution and file reading operations, it makes sense to create reusable utility classes in a helper package. This approach allows for consistent path access across the entire application.

Create a new package named QHHelper at the same level as QHBasic, and implement a utility class for absolute path resolution. The purpose of this class is to locate and provide access paths to various project resource files.

The current Resource folder structure contains two subdirectories: Image for storing application images, and User for user-related files encluding the license file located at /User/license/license.txt. The utility class should expose static methods to retrieve both the project root path and these specific folder paths.

The System.getProperty("user.dir") method returns the working directory, wich in this case points to the qhbase directory—one level above the Resource folder. This provides a suitable starting point for path construction.

package QHHelper;

import java.io.File;

/**
 * Utility class for resolving absolute paths to project resources
 */

public class PathResolver {
    
    private static String applicationRoot = null;

    /**
     * Retrieves the application root directory
     */
    private static String fetchApplicationRoot() {
        if (applicationRoot != null) {
            return applicationRoot;
        }
        applicationRoot = System.getProperty("user.dir");
        return applicationRoot;
    }

    /**
     * Constructs a path by appending subdirectories to the root
     */
    private static String buildPath(String[] directories) {
        StringBuilder fullPath = new StringBuilder(fetchApplicationRoot());
        for (String dir : directories) {
            fullPath.append(File.separator).append(dir);
        }
        return fullPath.toString();
    }

    private static String buildPath(String singleDirectory) {
        return buildPath(new String[]{singleDirectory});
    }

    /**
     * Constructs a path within the Resource directory
     */
    private static String buildResourcePath(String[] directories) {
        StringBuilder fullPath = new StringBuilder(fetchResourceRoot());
        for (String dir : directories) {
            fullPath.append(File.separator).append(dir);
        }
        return fullPath.toString();
    }

    private static String buildResourcePath(String singleDirectory) {
        return buildResourcePath(new String[]{singleDirectory});
    }

    /**
     * Returns the path to the Resource directory
     */
    public static String fetchResourceRoot() {
        return buildPath("Resource");
    }

    /**
     * Returns the path to the Image directory
     */
    public static String fetchImageDirectory() {
        return buildResourcePath("Image");
    }

    /**
     * Returns the path to the User directory
     */
    public static String fetchUserDirectory() {
        return buildResourcePath("User");
    }
}