一个java的简单问题....
class Box{
public double width,height;
Box( ){width=10;height=10; }
Box(double w,double h){width=w;height=h;}
public double Getarea( ){
return width*height;
}
}
class BoxDemo2{
public static void main(String args[]){
Box box1=new Box(10,20);
System.out.println(box1.Getarea());
Box box2=new Box(5,10);
System.out.println(box2.Getarea());
}
}
我看着麻烦,把Getarea( )Box(double w,double h)合在一起修改为,但却不对,为什么啊?
class Box
{
public double x,y;
Box(double width,double height)
{
x=width;
y=height;
return x*y;
}
}