1. Overview Introduction to Jeroo: What is Jeroo? Where did it come from?
Why use it?
How it works.
Your first assignments.

2. What is Jeroo?
An environment for learning object oriented programming. (OOP)
The Jeroo language is a small object-oriented programming language.
you create objects and then do things with them.
Created in Java.

3. Where did Jeroo come from?
NW Missouri State University
It’s free.

4. Jeroo Jeroos Humans arrive and set nets to catch Jeroos.
Place: Santong Island in the South Pacific
Two unknown species
Jeroo: similar to the wallabies of Australia
Winsum Flower: Jeroo's source of food
Jeroos
have a pouch to hold flowers
can't swim – fur gets waterlogged-must dry
Humans arrive and set nets to catch Jeroos.

5. The Jeroo environment The island is made of rows and columns.
The programmer chose to number both the rows and columns starting with zero at the northwest corner of the island. 1 2 3 4
columns
(0,0)
(0,1)
(?)
(3,2)
rows 1
NORTH 2 3
What location is this?

6. Programming steps A Jeroo can execute 6 action methods
hop()  hop once or hop(n) to hop n times
turn( relative_direction )
pick()  pick a flower
plant()  plant a flower from the pouch
toss()  throw a flower one space ahead.
give(relative direction)  give a flower to another jeroo
They always follow directions in order, from top to bottom.
Put it all together to solve various problems.

7. How Jeroo works 3 steps: Create your environment Write the program
Run the program

8. Icons used to create and edit islands
Set the speed of the Jeroos
Create a new island layout
Open an existing island
Save the island
Save as
Print
Plant flowers on the island
Set nets on the island
Add water to the island
Clear the island layout (remove all extra flowers, water and nets)
Get help with the Jeroo language
Quit Jeroo

9. Step 1. Create the Environment
To start:
Open an existing Island File
Or Create your own Island
Add or remove:
Flowers
Nets
Water
Land
You can save and re-use your islands.

10. Learn how to create islands.
Select water, flower or net
left-click to add
right-click to remove
Learn how to save islands.
Programs and islands are saved separately
Source_file save (.jsc)
Island_file save (.jev)

11. Creating the Jeroo environment
To create your environment in Jeroo:
Left-click to draw
Right-click to remove

12. Your first island Assignment:
Design an island that uses water, nets and flowers to create an attractive design based on one or more of your initials.
Save as yournameLetterIsland and print your island design.