java program i just need the answer for the question. i do not need the code.

Lab Report Question:

Define what null means.

Is it safe to assume when an array of objects is declared and initialized that each of the individual objects is also constructed?

Objective:

Write a program where the user enters in information about 5 boxes, and then they are sorted by their volume.

Create a class called Box

This class has four instance variables

Label: the name of the box

Length: the length in feet

Width: the width in feet

Height: the height in feet

Assume Length, Width, and Height are all decimal values

Constructors

Default

Parameterized (MUST CHECK FOR VALID VALUES)

Accessors for every instance variable

Mutators for every instance variable

CHECK FOR VALID VALUES!

Length Width and Height should all be greater than 0

Other methods

getVolume: this method returns a decimal value corresponding to its volume. It also has no parameters

toString: This method returns a string which is made up of the label of the box and its volume

Create another class called BoxSorter

This class has a main method

An array of boxes

Prompts the user for box information

Sorts the boxes

Displays the sorted boxes

Example Dialog:

Welcome to the box sorter!

Enter the information about boxes and I'll sort them!

Enter the label, length, width, and height (all feet) of box 1

Random electronics

2.0

2.0

2.0

Enter the label, length, width, and height (all feet) of box 2

Art supplies

1.0

3.0

1.0

Enter the label, length, width, and height (all feet) of box 3

Video Games Box 1

4.0

4.0

3.0

Enter the label, length, width, and height (all feet) of box 4

Board Games Box 3

3.0

3.0

2.0

Enter the label, length, width, and height (all feet) of box 5

Imported Cheeses

0.5

0.5

0.25

Sorted boxes

Label: Imported Cheeses Volume: 0.0625

Label: Art supplies Volume: 3.0

Label: Random electronics Volume: 8.0

Label: Board Games Box 3 Volume: 18.0

Label: Video Games Box 1 Volume: 48.0

Lab Report Question:

Define what null means.

Is it safe to assume when an array of objects is declared and initialized that each of the individual objects is also constructed?