How to Use Your Goodies

These goodies are provided to you by the course staff for your own use. Sometimes, in order to understand a subject or to complete an exercise, you will be asked to use Java code that had been written by us. This code is wrapped in a JAR file and can be downloaded from this page. In order to use these JARs, follow these instructions:
  1. Create a folder on hard-disk that will contain all our JARs. Let's say you called it C:\IDC\Intro2CS\Goodies\
  2. Download the JAR file to that folder by clicking the link called "Download File" on this page. Make sure the JAR is downloaded to that folder. 
  3. Add the JAR file to the CLASSPATH variable. This should include both the path and the JAR filename. For example, if you're downloading logo_turtle.jar and your CLASSPATH was "." then now it should be ".;C:\IDC\Intro2CS\Goodies\logo_turtle.jar".
  4. Sometimes the exercise will tell you to import classes. Follow those directions.
  5. You're ready to go. Click the API link to see all the classes and methods the JAR provides.

Good luck!




Goodie

API

JAR

Turtle

The Turtle is a graphical object in the shape of a real turtle. The class creates a canvas on the screen. Each Turtle instantiation draws a new turtle object on the canvas. Each such turtle can be controlled: you can move them around, hide them and make them leave a trail on the canvas, so you can actually make drawings on the canvas.
API
logo_turtle.jar
File Size: 186 kb
File Type: jar
Download File