首頁猿問 Java問題，怎么求長方體的體積

Java問題，怎么求長方體的體積

Java

珂珂涼 2016-03-05 15:35:54

?class Cuboid { double a; double b;? ? ? ? ? ? ?double h;? ? ? ? ? ? ?double area; public Cuboid(double a, double b,double h){ this.a = a; this.b = b; this.h = h; } public Cuboid() { // TODO Auto-generated constructor stub } double Area(){ area=a*b*h; return area; } }? ?public class ?Test67{?? ?public static void main(String args[]){ ? Cuboid cuboid = new Cuboid(); ? double a=12.5,b=5.2,h=2.5; ? Cuboid.Cuboid(a,b,h); ? System.out.println("長方提體的體積是:"+cuboid.Area());}}這是題目：1.?編程擴展下面的矩形類（Rect）為長方體類（Cuboid），要求增加高度（h）屬性，并求出長方體的體積（Volume）。public?class?Rect?{double?a;double?b;?public?Rect(double?a,?double?b){this.a?=?a;this.b?=?b;}public?double?Area(){return?a?*?b;}}

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public?class?Rect?{
double?a;
double?b;
double?c;
//帶三個參數(shù)（長寬高）的構(gòu)造函數(shù)
public?Rect(double?a,?double?b,double?c){
this.a?=?a;
this.b?=?b;
this.c?=?c;
}
public?double?Area(){
return?a?*?b*?c;
}
public?static?void?main(String[]?args)?{
	Rect?r?=?new?Rect(2.1,3.2,4.3);
	System.out.println(r.Area());
}
}

1 反對回復 2016-03-06