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Semester 1/Programming 1/Java/examples/picture/README.TXT

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+Project "picture"
+Authors: Michael Kolling and David J. Barnes
+
+This project is part of the material for the book
+
+   Objects First with Java - A Practical Introduction using BlueJ
+   David J. Barnes and Michael Kolling
+   Pearson Education, 2002
+
+It is discussed in chapter 1.
+    
+This is a very simple project to demonstrate some characteristics of
+objects.
+
+You can create various shapes, and you will see, if you do, that those
+shapes are drawn on screen (in a window that we call the "canvas").
+
+You can then manipulate these objects: change their position, size and 
+colour. Try it out: create a few different squares, triangles and circles.
+
+This project is designed as a first example of object-oriented programming.
+It illustrates a number of concepts:
+
+ - a Java project (application) is a collection of classes
+ - objects can be created from classes
+ - from any one class, many objects may be created
+ - objects have operations (methods)
+ - operations can have parameters
+ - parameters have types (at least String and int)
+ - objects hold data (fields)
+ - the operations and fields are common to all objects
+ - the values stored in the fields can be different for each object
+
+The project also demonstrates
+
+ - BlueJ object creation
+ - interactive method invocation
+ - parameter passing
+
+A good second project to look at after this is "picture", which adds a class
+to those ones in this project. That class (named "Picture") uses the shapes
+to draw a picture. It can be used to experiment with coding.
+
+Michael K<>lling, July 2000