rectangleclass.java

来自「Line, Poin, and Rectangle Class」· Java 代码 · 共 46 行

package project1;

public class RectangleClass extends LineClass{
    private double height;

    public RectangleClass()

        {    }

    public RectangleClass( int xValue, int yValue, double l_sizeValue,
            double heightValue)
    {
        super (xValue, yValue, l_sizeValue);
        setHeight (heightValue);
    }

    public void setHeight (double heightValue)
    {
        height = (heightValue<0.0?0.0: heightValue);

    }

    public double getHeight()
    {
        return height;

    }

    public double getArea()
    {
        return getLength()*getHeight();

    }

    public double getPerimeter()
    {
        return 2*(getLength()+getHeight());

    }

    public String toString()
    {
        return super.toString()+" \n     Height of the line: " + getHeight();
    }

}