public static File exists(String fileName) {
		Validate.notNull(fileName);
		Validate.notEmpty(fileName);
		return Validate.exists(new File(fileName));
	}
public static File exists ( String fileName ) { Validate . notNull ( fileName ) ; Validate . notEmpty ( fileName ) ; return Validate . exists ( new File ( fileName ) ) ; }
Checks if there is an existing file with the given name.<br>
This method assumes that the given String contains the complete file path.
@param fileName The file name (+path) to validate.
@return A file reference for the given file name.
@throws ParameterException if such a file does not exist.