Don't aks people to do your homework for you. Otherwise you are cheating
yourself out of an education. Make an attempt and then ask for help with
specific points that you cannot solve. Break it down into small steps.

class Box {
     // some declarations, constructors and other methods go here

int height, width, depth;

But consider what data type these variables should be, maybe floating
point is more appropriate? Perhaps it doesn't matter for this exercise?

Hope following code will help you.

//Box.java

/**
 *
 */
package com.omitdev.box;

/**
 * @author Kalyani Alshi
 *
 */
public class Box {

        private double height;

        private double width;

        private double depth;

        private boolean full;

        public Box(double height, double width, double depth) {
                this.height = height;
                this.width = width;
                this.depth = depth;
                this.full = false;
        }

        /**
         * @return the depth
         */
        public double getDepth() {
                return depth;
        }

        /**
         * @param depth
         *            the depth to set
         */
        public void setDepth(double depth) {
                this.depth = depth;
        }

        /**
         * @return the full
         */
        public boolean isFull() {
                return full;
        }

        /**
         * @param full
         *            the full to set
         */
        public void setFull(boolean full) {
                this.full = full;
        }

        /**
         * @return the height
         */
        public double getHeight() {
                return height;
        }

        /**
         * @param height
         *            the height to set
         */
        public void setHeight(double height) {
                this.height = height;
        }

        /**
         * @return the width
         */
        public double getWidth() {
                return width;
        }

        /**
         * @param width
         *            the width to set
         */
        public void setWidth(double width) {
                this.width = width;
        }

        private String checkStatus(){
                String status = "empty";
                if(full){
                        status = "full";
                }
                return status;
        }

        public String toString(){
                return "height: " + height + ",  width: " + width + ",  depth: " +
depth +
                "\nThis box is " + checkStatus();

        }

/**
 *
 */
package com.omitdev.box;

/**
 * @author Kalyani Alshi
 *
 */
public class BoxTest {

        public static void main(String[] args) {
                Box firstBox = new Box(23.4, 78.9, 56.8);
                Box secondBox = new Box(23, 56, 14);
                Box thirdBox = new Box(24.8, 67, 98);

                System.out.println("\nDescription of firstBox: ");
                System.out.println(firstBox);

                System.out.println("\nDescription of secondBox: ");
                System.out.println(secondBox);

                System.out.println("\nDescription of thirdBox: ");
                System.out.println(thirdBox);
        }

Wow, that's a pretty excessive hint.  Are you going to take the test for him
also?

http://mindprod.com/jgloss/homework.html

Give that a read, and try to see where we're coming from!

All I am asking for is a structure type of thing that can get me
started. I've never asked for any code. A nice easy template is all I
was asking for. Maybe it is the question I copied and paste scared
people. Thanks for your concern, and I totally understand that I need
to learn this stuff on my own.

As I stated, reading the first couple of chapters of a java book will
give you enough information to figure out the template for the homework
yourself.

How to express a property of a Box, so I can use it in my class.
How to abstract the height of a Box, ......... and so on .

If you didn't thinking before ask help , you won't learn anything.

Dijon Yu