Object Oriented Programming

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Presentation transcript:

Object Oriented Programming Day 2 Object Oriented Programming

Why OOP https://www.youtube.com/watch?v=qb-hfSRpuVk&feature=player_embedded

String Documentation Method Number of Parameter(s) Parameter Type(s) Return Type length() substring(__ ,__ ) toUpperCase() indexOf(___)

First Object: Day Object—Create a ‘Day Class’ First

Class Website: Files are stored here http://www.codersforcauses.com/ Go to Day 2, open Day, copy code, paste in Day class.

Class-Objects-Methods-Parameters Class—Day Create new Object: day1 (this is an instance of the Day class) What are the methods? Parameters? ______________ ______________

Complete Exercise 1

What methods are defined by the Day classes that can be used by these objects?

See Exercise 3: Download & unzip pictuers2 Variable Names See Exercise 3: Download & unzip pictuers2

Comments—Open the Color Class public class Cone { /** * Gets the volume of a cone * @param r the radius of the cone * @param h the height of the cone */ public double volume(int r, int h) double volume; // volume = (1/3)π*radius^2*height volume = (1.0/3.0)*Math.PI*r*r*h return volume; }

Resources Sheet: Java Facts:

Documentation View—See Exercise 4—days2 project