Control - Conditionals

Control - Conditionals

• if
• else
• boolean expressions
• nested if
• if-else-if

IfExamples.java
Condition.java
Bunny.java.

Deitel 4.1-4.7

Classwork

Create a project  and a class with a main method.

You can do all of today's classwork in mains  --  you don't need instance variables, etc.

We will be using the Scanner class to read from the user. At the top of your main class , after the package statement, paste

import java.util.Scanner;

Scanner scan = new Scanner(System.in);

Part A

 ☑ In your main, ask the user for an int.  Do this by first printing a request for the int, then creating an int x, and using the Scanner to read an int from the user and put it in x, like this:

int x = scan.nextInt();

☑ Next read in two doubles d1 and d2 from the user.  This will look a lot like what you did for the int, but the scanner reads doubles using

scan.nextDouble();

☑ Next read in a string s from the user.  Scanner reads strings using

scan.next();

Part B

☑ if x is below 12, double it, otherwise  halve it; either way print the result.

☑ if s is "Hello" print "Hi there!" otherwise print "No hello?  RUDE!"

☑ if d1 and d2 are the same, print "same" otherwise print whichever of d1 or d2 is higher, with the word "MAX:" in front of it

Part C

Add the class Bunny to your project. 

☑ In the same main as before, create two Bunnys and initialize them.

☑ Ask the user for and read in names and carrotCounts for each of the bunnys.  In this case, read directly into the instance variables, instead of reading into a temporary variable and then setting the Bunny's variables afterward.  For instance we can say things like

mrBunnyWunnykins.carrotCount = scan.nextInt(); 

☑ If the Bunnys have the same name, print "That's confusing!"

☑ Print congratulations to whichever Bunny has higher carrotCount (if they have the same, it doesn't matter which one you print) using the name and the carrotcount in what you print.

[EC+10] Do this last part with only one print statement which is not inside an if.  (hint: you can add an extra Bunny variable).