Programming and Problem Solving with Java

CASE STUDY

84

Our two value-returning methods use straightforward string expressions that are

identical to those in the original problem.

We are now ready to write the code for the class. What about the application? Our

application is really just meant to test the class. Software engineers refer to such a test

application as a driver.

It’s hard to believe that the mainmethod has been reduced to just four steps, but that’s

the beauty of object-oriented programming.

Now we’re ready to write the whole application. We also include comments as

necessary.

//******************************************************************

// NameDriver application

// This application inputs a name and prints it in

// two different formats

//******************************************************************

importjava.io.*; // Package for stream readers

public classNameDriver

{

static className

{

String first; // Person’s first name

Name Driver

Define a Name testName

Instantiate a Name object and assign it to testName

Print First Last Format

Print Last First Middle Format

Last First Middle Format

returnlast + “, “ + first + ”, “ + middle + “.”

First Last Format

returnfirst + “ “ + last

Name Constructor

Define a BufferedReader in

Instantiate a BufferedReader using an InputStreamReader using System.in, and

assign it to in

Prompt for first name on System.out

Get first name from in

Prompt for last name on System.out

Get last name from in

Prompt for middle initial on System.out

Get middle initial from in