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1 Author -name:String -email: String -gender: char +Author (name:String, email:String, gender:char) +getName(): String +getEmail(): String +setEmail(email: String):void +getGender(): char +toString(): String -name: String -author:Author -price:double Book -qty:int = 0 +Book (name:String, author:Author, price:double) +Book (name:String, author:Author, price:double, qty:int) +getName(): String +getAuthor(): Author +getPrice(): double +setPrice(price:double):void +getQty(): int +setQty(qty: int):void +toString(): String. No default values for the variables char of 'm' or 'f' "Author [name=?, email=?, gender=?]" has 1 Author -name:String -email:String -gender:char "Book [name=?, Author [name=?, email=?, gender=?],price=?, qty=?]" You need to reuse Author's toString().

1 Author -name:String -email: String -gender: char +Author (name:String, email:String, gender:char) +getName(): String +getEmail(): String +setEmail(email: String):void +getGender(): char +toString(): String -name: String -author:Author -price:double Book -qty:int = 0 +Book (name:String, author:Author, price:double) +Book (name:String, author:Author, price:double, qty:int) +getName(): String +getAuthor(): Author +getPrice(): double +setPrice(price:double):void +getQty(): int +setQty(qty: int):void +toString(): String. No default values for the variables char of 'm' or 'f' "Author [name=?, email=?, gender=?]" has 1 Author -name:String -email:String -gender:char "Book [name=?, Author [name=?, email=?, gender=?],price=?, qty=?]" You need to reuse Author's toString().

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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1. Please use java.

 
 
Author -name: String -email: String -gender: char +Author (name: String, email:String, gender:char) +getName(): String +getEmail(): String +setEmail(email:String):void +getGender(): char +toString(): String -name:String -author:Author -price:double Book -qty:int = 0 +Book (name:String, author:Author, price:double) +Book (name: String, author:Author, price:double, qty:int) +getName(): String +getAuthor(): Author +getPrice(): double +setPrice (price:double):void +getQty(): int +setQty(qty: int):void +toString(): String. No default values for the variables char of 'm' or 'f' "Author [name=?, email=?, gender=?]" has 1 Author -name: String -email:String -gender: char "Book [name=?, Author [name=?, email=?, gender=?],price=?,qty=?]" You need to reuse Author's toString().
Transcribed Image Text:Author -name: String -email: String -gender: char +Author (name: String, email:String, gender:char) +getName(): String +getEmail(): String +setEmail(email:String):void +getGender(): char +toString(): String -name:String -author:Author -price:double Book -qty:int = 0 +Book (name:String, author:Author, price:double) +Book (name: String, author:Author, price:double, qty:int) +getName(): String +getAuthor(): Author +getPrice(): double +setPrice (price:double):void +getQty(): int +setQty(qty: int):void +toString(): String. No default values for the variables char of 'm' or 'f' "Author [name=?, email=?, gender=?]" has 1 Author -name: String -email:String -gender: char "Book [name=?, Author [name=?, email=?, gender=?],price=?,qty=?]" You need to reuse Author's toString().
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