Hey there!
I'm new to this, and I need some help.

I have to make a program that can find the Volume of a box.

First I have to set the Int to Height, Width and Length

Then I have to make constructors for my Box() = height, width and length to 0

Get- and set-methods
getSize() method that returns the (height*width*length).
and then a toString() method that returns Volume + (height*width*length).

like: "5 x 4 x 5 = 100"

I have to make a program that can output 2 boxes, useing the toString method.

i'm currently here: ( rumfang = volume on danish )


public class Box {

private int height;
private int width;
private int length;

public Box() {
height = 0;
width = 0;
length = 0;
}

public Box(int h, int w, int l) {
}

public int getHeight() {
return height;
}

public int getWidth() {
return width;
}

public int getLength() {
return length;
}

public void setHeight(int h) {
height = h;
}

public void setLength(int l) {
length = l;
}

public void setWidth(int w) {
width = w;
}

public int getSize() {
return height * width * length;
}

public int ToString() {
int Rumfang;
Rumfang = height * width * length;
return Rumfang;
}
}

You don't need methods to get and set the height, width and length of the box at all. in the constructor of the box, you already pass to the object those values. It would be better to just simply have a method called getVolume, and this method will know how to work with the height, width and length, and will just return the volume to you. You don't expose internal data of the object outside of the object, its the concept of "tell, don't ask", witch resumes to: "Procedural code gets information then makes decisions. Object-oriented code tells objects to do things."

if you want to learn more:
http://pragprog.com/articles/tell-dont-ask