1. Multiple if-else boolean Data
Chapter 5
Imagine! Java: Programming Concepts in Context by Frank M. Carrano, (c) Pearson Education - Prentice Hall, 2010 1 1

2. Programs Program 6 is being graded. Program 7 is on my website.
Bonus point for evaluation. 2

3. Topics Multiple if-else(5.3) Boolean Data (5.6) 3 3
Imagine! Java: Programming Concepts in Context by Frank M. Carrano, (c) Pearson Education - Prentice Hall, 2010 3 3

4. Multiple Outcomes if-else can produce two possible outcomes.
One outcome for true
Another for false condition
Sometimes there can be several possible outcomes.

5. Example Course Description
Write a program to accept a course number then print the description for the course.

6. import java.util.Scanner;
//Outputs a course description for a course number
public class CourseDescription {
public static void main(String[] args) {
//Input the course number
Scanner scan = new Scanner(System.in);
System.out.print("Enter Course Number:");
String number = scan.next();
//Output correct description
if(number.equals("CS119"))
System.out.println("Intro to Java");
else if(number.equals("CS115"))
System.out.println("Intro to C");
else if(number.equals("CS117"))
System.out.println("Intro to C++");
else
System.out.println("Number not found.");
scan.close(); }

7. Movie Ticket Example
Move tickets sell at $6 for children under 14, $12 for adults, and $8 for seniors over 55.
Three outcomes
Can use an a serious of if-statements in a chain to determine the price, given the age.

8. import java.util.Scanner;
import java.text.DecimalFormat;
//Determine movie price based on age
public class Movie{
public static void main(String []args){
//Input movie-goer's age
Scanner scan = new Scanner(System.in);
System.out.print("What is your age?");
int age = scan.nextInt();
//Decide price, based on age.
double price = 0.0;
if(age <= 14)
price = 6.00;
else if(age < 55)
price = 12.00;
else
price = 8.00;
DecimalFormat formatter = new DecimalFormat("$0.00");
System.out.println(formatter.format(price) + " please."); }

9. Boolean Variables
Skip this Spring ‘16

10. Boolean Variables boolean is a primitive type.
boolean variables can store either true or false.
Can use to flag condition.
Example:
boolean icyRoads = true;
if(icyRoads)
System.out.println(“Stay home.”);
else
System.out.println(“Drive on.”);

11. Boolean data field in Class
public class AutoRepair{
private String name;
private String make;
private String model;
private boolean done;
. . .

12. What is the value in y? int y, x = 5; boolean flag = true;
if (x > 10 || x < 2)
y = 1;
else if(flag)
y = 2;
else if(x > -2)
y = 3;
else
y = 4;

13. Participation
Write a program to accept an integer for placement in a hog show at the fair. Use a multiple if-else statement to output the ribbon color for the placement
“Blue”
“Red”
“White”
Any other number is “No ribbon”