Static Methods

Hydraulics Constants

Here is a class that models a hydraulics constants library.

We use static methods to return the fixed values.

/**
 *
 * HydraulicsConstants
 *
 * Library of hydraulics contants
 */

public class HydraulicsConstants {

	public static int squareFeetPerAcre() {
		return 43560;
	}

	public static double convertAcresToSquareFeet(double acres) {
		return acres * HydraulicsConstants.squareFeetPerAcre();
	}

	public static double gallonsPerCubicFoot() {
		return 7.48;
	}

	public static int acresPerSquareMile() {
		return 640;
	}

	public static double convertSquareMilestoAcres(double squareMiles) {
		return squareMiles * HydraulicsConstants.acresPerSquareMile();
	}

	public static double standardAtmosphericPressureAsPoundPerSquareInch() {
		return 14.7;
	}

	public static double gravitationalConstanAsFeetPerSquareSecond() {
		return 32.2;
	}

	public static double waterSpecificWeightAsPoundPerCubicFoot() {
		return 62.3;
	}

}

Hydraulics Constants Driver

Here is an example of using the hydraulics constants library.

	private void sample1()  {
		prn("squareFeetPerAcre: "
			+ HydraulicsConstants.squareFeetPerAcre());
		prn("convertAcresToSquareFeet(2): "
			+ HydraulicsConstants.convertAcresToSquareFeet(2));
		prn("acresPerSquareMile: "
			+ HydraulicsConstants.acresPerSquareMile());
		prn("convertSquareMilestoAcres(3): "
			+ HydraulicsConstants.convertSquareMilestoAcres(3));
	}