// UTILITY CLASS
// Frans Coenen
// University of Liverpool
// 19 April 2013

import java.text.DecimalFormat;

class Utility {
	
	/** Converts the given double to a two decimal place double. 
	@param doubleNum the given double.
	@return the given double converted to a two decimal place double. */
	
	public static double twoDecPlaces(double doubleNum) {
		int integerNum   = (int) ((doubleNum+0.005)*100.0);
		double newDoubleNum = (double) integerNum/100.0;
		return(newDoubleNum);
		}
		
	/** Alternative 1: Uses DecimalFormat class to converts the given double to a two 
	decimal place double but represented as a string. 
	@param doubleNum the given double.
	@return the given double converted to a two decimal place string. */
	
	public static String twoDecPlacesAlt1(double doubleNum) {
		DecimalFormat df = new DecimalFormat("#.##");
		return(df.format(doubleNum));
		}
		
	/** Alternative 2: Uses format method in String class to converts the given double to 
	a two decimal place double but represented as a string. 
	@param doubleNum the given double.
	@return the given double converted to a two decimal place string. */
	
	public static String twoDecPlacesAlt2(double doubleNum) {
		return(String.format("%.3g%n",doubleNum));
		}
	}