public static String appendPath(String prefixPath, String subpath) {
        return cleanPath(prefixPath) + SEPARATOR + cleanPath(subpath);
    }
public static String appendPath ( String prefixPath , String subpath ) { return cleanPath ( prefixPath ) + SEPARATOR + cleanPath ( subpath ) ; }
Append one path to another

@param prefixPath prefix
@param subpath    sub path

@return sub path appended to the prefix