Ellipsoid.java $(3)$ Methods: Usually a class provides methods to access and modify each of its instance

variables $($known as get and set methods$)$ along with any other required methods. The

methods for Ellipsoid, which should each be public, are described below. See formulas in

Code and Test below.

getLabe $1$: Accepts no parameters and returns a String representing the label field.

setLabe $1$: Takes a String parameter and returns a boolean. If the string parameter is

not null, then the label field is set to the "trimmed" String and the method returns true.

Otherwise, the method returns false and the label field is not set.

getA: Accepts no parameters and returns a double representing field $a.$

setA: Accepts a double parameter and returns a boolean as follows. If the double is

greater than zero, sets field $a$ to the double passed in and returns true. Otherwise, the

method returns false and does not set the field. getB: Accepts no parameters and returns a double representing field $b.$

setB: Accepts a double parameter and returns a boolean as follows. If the double is

greater than zero, sets field $b$ to the double passed in and returns true. Otherwise, the

method returns false and does not set the field.

getc: Accepts no parameters and returns a double representing field $c.$

setC: Accepts a double parameter and returns a boolean as follows. If the double is

greater than zero, sets field $c$ to the double passed in and returns true. Otherwise, the

method returns false and does not set the field.

volume: Accepts no parameters and returns the double value for the volume calculated

using formula above and the values of axes fields $a,b,c.$ surfaceArea: Accepts no parameters and returns the double value for the surface

area calculated using formula above and the values of axes fields $a,b,c.$

toString: Returns a String containing the information about the Ellipsoid object

formatted as shown below, including decimal formatting $("$#$,$##$0\mathrm{.}0$###$")$ for the

double values. Newline and tab escape sequences should be used to achieve the proper

layout within the String, but it should not begin or end with a newline. In addition to the

field values $($or corresponding "get" methods$),$ the following methods should be used to

compute appropriate values in the toString method: volume $()$ and surfaceArea $().$

Each line should have no trailing spaces $($e$.$g$.,$ there should be no spaces before a newline

$($ n $)$ character$).$ The toString value for ex$1,$ ex$2,$ and ex$3$ respectively are shown

below $($the blank lines are not part of the toString values$).$

Requirements: Create an Ellipsoid class that stores the label and three axes a$,$ b$,$ and c$.$ The

values of the axes must be greater than zero. The Ellipsoid class also includes methods to set and

get each of these fields, as well as methods to calculate the volume and surface area of the

Ellipsoid object, and a method to provide a String value of an Ellipsoid object $($i$.$e$.,$ a class

instance$).$