magicfinger.java

来自「这个文件里面包含了java设计模式的一些例子讲解」· Java 代码 · 共 51 行

package com.javapatterns.adapter.cube2ball;
                          
public class MagicFinger implements BallIF
{
    private double radius = 0;
    private static final double PI = 3.14;

	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;
    }

    private Cube adaptee;
}