Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Transcribed Image Text:Product
-code: String
-description: String
--price: double
+Product()
+Product(code: String, description:
String, price: double)
+setCode(code: String): void
+getCode(): String
+setDesciption(description: String): void
+getDescription(): String
+setPrice(price: double): void
+getPrice(): double
+print(): void
Book
Software
-author: String
+Book()
+Book(code: String, description:
String, price: double, author: String)
+setAuthor(author: String): void
+getAuthor(): String
+print(): void
-version: String
+Software()
+Software(code: String, description:
String, price: double, version: String)
+setVersion(version: String): void
+getVersion(): String
+print(): void
(1) Implement the three classes described in the UML diagram above. The Book
and Software are two subclasses of the Product class.
- The no-arg constructors should assign empty string "" to String type data
fields and 0 (zero) to double type data fields. The constructors with
arguments should assign specified values to perspective data fields.
Transcribed Image Text:The print() method of the Product class should display a Product object's
information in the following format:
Product code: html
Product name: Crash course HTML
Price: 19ドル.99
The Book class must override the print() method of the Product class by
calling the print () method of its' superclass, then add the author information,
such as:
Product code: java
Product name: Introduction to Java
Price: 59ドル.99
Author: Daniel Liang
The Software class must override the print() method of the Product class by
calling the print() method of its' superclass, then add the version information,
such as:
Product code: jdk
Product name: Java Development Kit
Price: 29ドル.99
Version: 1.8.0
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