magicfinger.java

Java与模式 源代码

package com.javapatterns.adapter.cube2ball;

public class MagicFinger implements BallIF
{
    private double radius = 0;
    private static final double PI = 3.14;
    private Cube adaptee;

    public MagicFinger(Cube adaptee)
    {
        super();
        this.adaptee = adaptee;

        radius = adaptee.getWidth();
    }

    /** Class Adaptee does not contain operation calculateSurface. */
    public double calculateArea()
    {
        return PI * 4.0D * (radius * radius);
    }

    /** Class Adaptee contains operation calculateVolume, but we need to override it. */
    public double calculateVolume()
    {
        return PI * 4.0D / 3.0D * (radius * radius * radius);
    }

    /** Class Adaptee does not contain operation getRadius. */
    public double getRadius()
    {
        return radius;
    }

    /** Class Adaptee does not contain operation getRadius. */
    public void setRadius(double radius)
    {
        this.radius = radius;
    }
}