﻿﻿ CS 1110/1111: Introduction to Programming

Lecture 26

Announcements

Next class: bring in a object for show and tell.

Talking Points

Drawing Memory

Consider the following:

Fraction
int numerator
int denominator
Fraction()

FractionPoint
Fraction x
Fraction y
FractionPoint()

Circle
FractionPoint center
String name
Circle(String name)

What does memory look like after running the following?

```Circle c = new Circle("example");
```
solution from section 001; solution from section 002

Diagramming a Class

Create a UML Class Diagram for a class to represent a GPS coordinate. You should be able to compute the distance between two points and which of a pair of points is farther from sea level.

Solution from lecture:

```--------------------------------------
GPSCoordinate
--------------------------------------
lat: double
lon: double
alt: double
SEA_LEVEL: static final double       // section 001 didn't have SEA_LEVEL
--------------------------------------
GPSCoordinate(double, double, double)
distance(double, double) : double    // section 001 didn't have this version
distance(GPSCoordinate) : double
fartherUpThan(GPSCoordinate) : boolean
--------------------------------------
```