Part $2.$ Data and Methods in Classes

Purpose

This lab reviews old material and introduces new material. Before you continue with the following problems,

create a new Java project and add the following files: Rectangle.java darr and its driver

NewAndReviewExamples.java darr. Review and run the NewAndReviewExamples.java driver for each case of the

switch statement and observe what happens. After you run each case, take a look at the code used to produce

that result. Use these two files as examples while working on the remaining sections.

Data in Java: Primitives and Objects

Build a small class used to represent a single concept such as a Car or Vehicle.

Make a new Java project and create a new class called

Consider what primitive values a Car should have declared: an int for odometer reading, and Strings for

make and model. Inside your Car class right after the class declaration, define three $($instance$)$ variables for

the odometer, make, and model.

Write a main that instantiates two Cars and prints them out. $($Hint: Carc$1=$ new Car$()$; and

System.out.println$($c$1.$tostring$())$;

Constructors

First, check out the set of constructors provided for you in the

class. Notice how they are overloaded

$($there are multiple constructors with different parameters$)$ to provide flexibility for users of this class. Add to

your class three constructors $-$ one default constructor, one to take a

$|$ 'make', the other to take two

;: a 'make' and a 'model'. Test these constructors by building multiple car $s$ in your

driver, calling

each constructor in turn.

This $($the Implicit Parameter$)$

In the previous section, you created two car objects and observed the addresses of the objects in main by using

with

Next, create a method inside the

class, which prints out the address of the

$""$ object using

$.$ Call that method on the Car object you built earlier in problem $1,$ and explain why

the two addresses are the same. If you get stuck take a look at Case $1$ in