— Scott McNealy, Sun Microsystems Chairman, President and ceo

112
 
chapter 5
One last class: GameHelper
 prep code test code
real code
real code

We made the dot com class.
We made the game class.
All that’s left is the helper class— the one with the 
getUserInput() method. The code to get command-
line input is more than we want to explain right now. 
It opens up way too many topics best left for later. 
(Later, as in chapter 14.)
import java.io.*;
public class GameHelper {
public String getUserInput(String prompt) {
String inputLine = null;
System.out.print(prompt + “ “);
try {
BufferedReader is = new BufferedReader(
 
 new InputStreamReader(System.in));
inputLine = is.readLine();
if (inputLine.length() == 0 ) return null; 
} catch (IOException e) {
System.out.println(“IOException: “ + e);
}
return inputLine;
}
}
I pre-cooked 
some code so you 
don’t have to make 
it yourself. 
Ready-bake 
Code
Just copy* the code below and compile it into 
a class named GameHelper. Drop all three 
classes (SimpleDotCom, SimpleDotComGame, 
GameHelper) into the same directory, and make it 
your working directory.
Whenever you see the
logo, you’re see-
ing code that you have to type as-is and take on faith. 
Trust it. You’ll learn how that code works later.
Ready-bake 
Code
*We know how much you enjoy typing, but for those rare 
moments when you’d rather do something else, we’ve made 
the Ready-bake Code available on wickedlysmart.com.
GameHelper 
class (Ready-bake)

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