适配器设计模式---对象适配

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package cn.icer.simulation.ObjectAdapter;/** * 火箭 * @author icer * @date 2013-12-27 * */public abstract class SkyRocket {private double burnTime;private double mass;private double thrust;public SkyRocket(double mass, double thrust, double burnTime){this.mass = mass;this.thrust = thrust;this.burnTime = burnTime;}public abstract double getMass();public abstract double getThrust();public abstract void setSimTime(double time);}

package cn.icer.simulation.ObjectAdapter;/** * 火箭 * @author icer * @date 2013-12-27 * */public class PhysicalRocket {private double burnArea;//燃烧面积private double burnRate;//燃烧率private double initFuelMass;//燃料private double totalMass;//燃料总量private double totalBurnTime;//总燃烧时间//重力加速度private static double SPECIFIC_IMPULSE = 620;// Newtons/Kg//燃料密度private static double FUEL_DENSITY = 1800;// Kg / M**3public PhysicalRocket(double burnArea, double burnRate, double fuelMass, double totalMass) {this.burnArea = burnArea;this.burnRate = burnRate;this.initFuelMass = fuelMass;this.totalMass = totalMass;double initialFuelVolume = fuelMass / FUEL_DENSITY;this.totalBurnTime = initialFuelVolume / (burnArea * burnRate);}/** *  * @return 燃烧时间 */public double getBurnTime(){return totalBurnTime;}/** *  * @param time 燃烧时间 * @return 现在剩余的燃料 */public double getMass(double time){if ( time > totalBurnTime)return totalMass - initFuelMass;double burntFuelVolume = burnArea * burnRate * time;return totalMass - burntFuelVolume * FUEL_DENSITY;}/** *  * @param time 燃烧时间 * @return 点火以来产生的总推力 */public double getThrust(double time){if (time > totalBurnTime)return 0;return FUEL_DENSITY * SPECIFIC_IMPULSE * burnArea * burnRate;}}

package cn.icer.simulation.ObjectAdapter;/** * 火箭 * @author icer * @date 2013-12-27 * */public class IcerRocket extends SkyRocket {private double time;private PhysicalRocket rocket;public IcerRocket(PhysicalRocket rocket) {super(rocket.getMass(0), rocket.getThrust(0), rocket.getBurnTime());this.rocket = rocket;}@Overridepublic double getMass() {return rocket.getMass(time);}@Overridepublic double getThrust() {return rocket.getThrust(time);}@Overridepublic void setSimTime(double time) {this.time = time;}}

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