Week 11 - Friday

 What did we talk about last time?  Object methods  Accessors  Mutators  Constructors  Defining classes

 Let’s create a Student class  Each Student will contain  First Name: String  Last Name: String  GPA: double  ID: int  We need a constructor specifying each of these things, accessors to read them later, and mutators to change GPA and ID

 Using the Student class, we can create a roster of students  The roster is just an array of Student objects  We’ll read in some student information from a file and create lots of Student objects  Then, with our array, we can do some operations:  Print out a nicely formatted roster  Find the average GPA of all students  Determine the valedictorian

 We can make a Ball class  Each Ball will have:  Color: Color  x Location: double  y Location: double  Radius: double  x Velocity: double  y Velocity: double  We will need a constructor specifying these values and a method to update the position of the ball over time

 With the Ball class created, it’s easy to make a program that shows balls bouncing all over the screen  We simply create an array of Ball objects and update them repeatedly

 Exam 2 post mortem  More object examples  Class variables and constants  Big Oh notation

 Keep working on Project 4  Due next Friday