extends class Car extends Vehicle class contents See

서브클래스 유도 • 예약어 extends를 사용한다. class Car extends Vehicle { // class contents } • See Words. java (page 440) • See Book. java (page 441) • See Dictionary. java (page 442) 7

Word. java © 2004 Pearson Addison-Wesley. All rights reserved 8

Book. java © 2004 Pearson Addison-Wesley. All rights reserved 9

Dictionary. java © 2004 Pearson Addison-Wesley. All rights reserved 10

Words를 위한 클래스 다이어그램 Book # pages : int + page. Message() : void Words Dictionary - definitions : int + main (args : String[]) : void © 2004 Pearson Addison-Wesley. All rights reserved + definition. Message() : void 13

Word 2. java © 2004 Pearson Addison-Wesley. All rights reserved 15

Book 2. java © 2004 Pearson Addison-Wesley. All rights reserved 16

Dictionary 2. java © 2004 Pearson Addison-Wesley. All rights reserved 17

Message. java © 2004 Pearson Addison-Wesley. All rights reserved 21

Thought. java © 2004 Pearson Addison-Wesley. All rights reserved 22

Advice. java © 2004 Pearson Addison-Wesley. All rights reserved 23

클래스 계층구조(Class Hierarchy) • 한 부모의 자식 클래스가 다른 클래스의 부모 클래스가 되어 계층구조 형성 Business Retail. Business KMart Service. Business Macys Kinkos 27

Food. Analyzer. java © 2004 Pearson Addison-Wesley. All rights reserved 36

Food. Item. java © 2004 Pearson Addison-Wesley. All rights reserved 37

Pizza. java © 2004 Pearson Addison-Wesley. All rights reserved 38

Off. Center. java © 2004 Pearson Addison-Wesley. All rights reserved 48

Off. Center. Panel. java © 2004 Pearson Addison-Wesley. All rights reserved 49

Off. Center. Panel. java © 2004 Pearson Addison-Wesley. All rights reserved 50

Rebound. java © 2004 Pearson Addison-Wesley. All rights reserved 53

Rebound. Panel. java © 2004 Pearson Addison-Wesley. All rights reserved 54

Rebound. Panel. java © 2004 Pearson Addison-Wesley. All rights reserved 55