Rectangle3D.java - java_programming

public class Rectangle3D extends Rectangle implements ThreeDimensions {
	int depth;
 
	Rectangle3D(){
		super(5, 5);
		this.depth = 5;
	}
 
	Rectangle3D(int w, int h, int d){
		super(w, h);
		this.depth = d;
	}
 
	public int getVolume(){
		return super.getArea() * depth;
	}
	public int getSurface(){
		int sum;
 
		sum = width * height * 2;
		sum += depth * height * 2;
		sum += width * depth * 2;
 
		return sum;
	}
	public String toString(){
		return "[ 幅：" + this.width + " 高さ：" + this.height + " 奥行き：" + this.depth + " ]";
	}
}