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Using Jeroo. Overview. In this presentation we will discuss: What is Jeroo? Where did it come from? Why use it? How it works. Your first assignments. What is Jeroo?. An environment for learning object oriented programming. (OOP)
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Overview • In this presentation we will discuss: • What is Jeroo? • Where did it come from? • Why use it? • How it works. • Your first assignments.
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.
Where did Jeroo come from? • NW Missouri State University • It’s free. www.jeroo.org
Jeroo • 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.
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. 2 0 1 3 4 columns 0 rows 1 NORTH 2 3 What location is this?
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(relativedirection) give a flower to another jeroo • They always follow directions in order, from top to bottom. • Put it all together to solve various problems.
How Jeroo works • 3 steps: • Create your environment • Write the program • Run the program
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
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.
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)
Creating the Jeroo environment To create your environment in Jeroo: Left-click to draw Right-click to remove
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.