This document provides a computing challenge that involves using else if statements in code. The challenges are to: 1) Identify else if statements in code and understand their purpose 2) Apply an else if statement to example code 3) Nest if statements to increase complexity Additional extensions include creating your own decision tree with code comments. The document then reviews if statements and introduces else if as adding more choices. It provides example Java code of a grading system using else if and challenges the reader to expand on it.

2. Today's Computing Challenge
• Challenge One: Identify Else If statements in a piece of code
and understand why they are used.
• Challenge Two: Apply an Else IF statement to a piece of code.
• Aspire Three: To nest If statements into the lesson code to
increase complexity. Apply different IF statements into the
defined problem.
*Additional Extension create your own decision tree including description
and comments into the code hint: use // for code comments

3. Else IF Statements
• In the last lesson we created a basic program that …..?
• Can you remember?
• The first part of the lesson was to create a simple
If (condition is true){
Then output a message
} else do this

4. IF Statements - Recap
Java CodeDrawing of a descision

5. Else If adds more possibilities or choices

6. Java Code
Start a new java application in
Netbeans and call it esleif
Notice that we did not print out the
grade until after the If statement
block. This is because the result is
assigned to the variable grade until
the end.
Extension: Can you include some
help for the user in the output
window?

7. Your turn! Adapt the code and expand!
Include more ELSE IF statements to complete the grading system
Once complete take a print screen and upload
to your OneNote.
Can you adapt the code to become
more user friendly!
Can you add comments to your code to explain the process?
Take new screen shot and upload to OneNote

8. Your turn! Adapt the code and expand!
Can you adapt the code and create a new app
called ‘temperature’
Change the Grades to the following
1. Steaming hot = temperature above 92 degrees Celsius
2. Very hot = temperature above 72 degrees Celsius
3. Hot = temperature above 62 degrees Celsius
4. Very Warm = temperature above 42 degrees Celsius
5. Warm = temperature above 22 degrees Celsius
6. Cold = temperature above 2 degrees Celsius

9. Plenary
• What variables did you create?
• How did you declare that variable in Java?
• Inside the If statement what does the >= mean?