Class•Attributes (public/private)•Constructors•

Accessors ○

Modifiers○

Testers○

Behaviors/Operations○

Print Method○

Instance Methods (public/private)

•

public class Ball

Attributes/Instance Variables private int x, y ball location private Color ballColor private int radius private int dx, dy movement private int canvasW, canvasH canvas size

Constructor(s) public Ball(int w, int h) create ball public Ball(int w, int h, Color c)

Instance Methods/Operations public void display() display the ball public void move() move the ball public boolean collision(Ball b) does this ball collide b?

private void bounce() check bounces off the wall private int distance(Ball b) distance to ball b

Print Method public String toString()

Assignment#7 is postedDue on Tuesday, Dec 8

•

Exam 2 is on Tuesday, 12/8•

18 OOP in Java - ExamplesFriday, November 20, 2020 2:09 PM

113 Lectures Page 1

public class Country

Attributes/Instance Variablesprivate String code 3-digit UN country code (404)private String abbrev 2-letter country abbreviation (KE)private String ISO 3-letter ISO abbreviation (KEN)private String name name of country (Kenya)private String capital capital of country (Nairobi)

Constructor(s)public Country(String abbrev, String name, String capital) Constructor

Instance MethodsString getISO() returns the 3-letter ISO abbreviationString getName() returns the name of the countryString getCapital() returns the name of the capital

String toString() Print Method: e.g. KAZ Kazakhstan (Astana)

Class•Attributes (public/private)•Constructors•

Accessors ○

Modifiers○

Testers○

Behaviors/Operations○

Print Method○

Instance Methods (public/private)

•

18 OOP in Java - ExamplesTuesday, December 1, 2020 10:40 AM

113 Lectures Page 2

Class•Attributes (public/private)•Constructors•

Accessors ○

Modifiers○

Testers○

Behaviors/Operations○

Print Method○

Instance Methods (public/private)

•

18 OOP in Java - Designing Data TypesTuesday, December 1, 2020 10:48 AM

113 Lectures Page 3

1964302008 1 3 23 36 44 JAX PHL2008 1 3 1232 11 12 JAX PHL2008 1 3 1285 21 42 LAS PHL2008 1 3 1843 -4 20 LAS PHL2008 1 3 297 7 18 MCO PHL

18 OOP Example - Designing Data TypesTuesday, December 1, 2020 11:27 AM

113 Lectures Page 4