MeasurementConverterV2.java

/**
 * Establishes methods and converts units.
 *
 * @author Bijan Tajmir
 * @version 11/20/2014
 */
public class MeasurementConverterV2
{
//Purpose of program
	public static void printPurpose( )  //notice that this method is void, nothing is returned
	{
		System.out.println("This program converts to and from");
		System.out.println("English and metric units of measure.");
		System.out.println("=====================================");
	}
	
	//convert feet to miles
	//the ft parameter receives the value of the feet argument passed from main method.
	public static double convertFeetToMiles(double ft)
	{
		return ft / 5280;
	}
	
	//convert miles to feet
	public static double convertMilesToFeet(double mi)
	{
		return mi * 5280;
	}
	
	//convert miles to kilometers
	public static double convertMilesToKilometers(double mi)
	{
		return mi*1.6;
	}
	
	//convert kilometers to miles
	public static double convertKilometersToMiles(double km)
	{
		return km/1.6;
	}
	
	//convert pounds to kilograms
	public static double convertPoundsToKilograms(double lb)
	{
		return lb/2.2046;
	}
	
	//convert kilograms to pounds
	public static double convertKilogramsToPounds(double kg)
	{
		return kg*2.2046;
	}
	
	//convert Gallons to Liters
	public static double convertGallonsToLiters(double gal)
	{
		return gal/0.26417;
	}
	
	//convert Liters to Gallons
	public static double convertLitersToGallons(double liter)
	{
		return liter*0.26417;
	}
	
	public static void main(String[ ] args)
	{
		//local variables
		double miles, feet, inches, pounds, gallons;
		double kilometers, kilograms, liters;
		
		//variable declaration and initialization
		
		printPurpose();                                    //invoke the printPurpose() method
		feet = 6230;
		miles = convertFeetToMiles(feet);            //invoke the convertFeetToMiles() static method and pass the feet variable as an argument
		System.out.printf("%8.1f ft. = %7.1f mi. %n", feet, miles);
		
		miles = 1.9;
		feet = convertMilesToFeet(miles);
		System.out.printf("%8.1f mi. = %7.1f ft. %n", miles, feet);
		
		miles = 22.3;
		kilometers = convertMilesToKilometers(miles);
		System.out.printf("%8.1f mi. = %7.1f km. %n", miles, kilometers);
		
		kilometers = 1000.0;
		miles = convertKilometersToMiles(kilometers);
		System.out.printf("%8.1f km. = %7.1f mi. %n", kilometers, miles);
		
		pounds = 204.0;
		kilograms = convertPoundsToKilograms(pounds);
		System.out.printf("%8.1f lb. = %7.1f kg. %n", pounds, kilograms);
		
		kilograms = 155.0;
		pounds = convertKilogramsToPounds(kilograms);
		System.out.printf("%8.1f kg. = %7.1f lbs. %n", kilograms, pounds);
		
		gallons = 100.0;
		liters = convertGallonsToLiters(gallons);
		System.out.printf("%8.1f gl. = %7.1f li. %n", gallons, liters);
		
		liters = 5.0;
		gallons = convertLitersToGallons(liters);
		System.out.printf("%8.1f li. = %7.1f gl. %n", liters, gallons);
	}//end of main method

}//end of class