$1.$ Complete the following class by adding constructors to the class Box. $($see TODO in the code$)2$ Marks

public class Box

$\{$

private double width;

private double height;

private double depth;

public Box$()$

$\{$

width $=$ height $=$ depth $=0$;

$\}$

$//$TODO: add a constructor which takes one parameter and initialize all the fields

$//$TODO: add a constructor which takes three parameters and initialize all the fields

public double volume$()$

$\{$

return width $*$ height $*$ depth;

$\}$

$\}$