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().

EBK JAVA PROGRAMMING

9th Edition

ISBN:9781337671385

Author:FARRELL

Publisher:FARRELL

Chapter3: Using Methods, Classes, And Objects

Section: Chapter Questions

Problem 1GZ

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In some cases, a class depends on itself. That is, an object of one class interactswith another object of the same class. To accomplish this, a method of the classmay accept as a parameter an object of the same class.The concat method of the String class is an example of this situation. Themethod is executed through one String object and is passed another String object as a parameter. Here is an example:str3 = str1.concat(str2);The String object executing the method (str1) appends its characters to thoseof the String passed as a parameter (str2). A new String object is returned asa result and stored as str3. Write java code to implement given conditions
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Lili and Bibi has just graduated from highschool. They’re now in the same university.As both are bestfriends since kindergarten, they chose to share a dormitory room. Rightbefore the first day of college, they both live in the same room.Lili and Bibi both like to read. Each of them has collections of their favourite books. Ofcourse they brought them there. Each book has descriptions: ID(integer), title(string),and author(string). Lili has N books, while Bibi has M books. They both sorted thebooks by its ID in ascending order. Sadly, there are only one bookshelf in the dormitoryroom. They both want to organize their books in one bookshelf, Of course in a sorted IDin ascending order. However, they consider the ID as the first priority of sorting factors,if two books has the same ID, they sort it by its title lexicographically in ascending order.Two books with the same ID may have a different title or author. Lili doesn’t have twobooks with the same ID, neither does Bibi. But they both…
In some circumstances, a class is reliant on itself. That is, one class's object interacts with another class's object. To accomplish this, a method of the class may accept an object of the same class as a parameter.The String class's concat function is an example of this situation. The method is called by one String object and receives another String object as an argument. Here's an illustration:str3 is equal to str1.concat(str2);The method's String object (str1) appends its characters to those of the String supplied as a parameter (str2). As a consequence, a new String object is returned and saved as str3. Create Java code to implement the conditions given.
class Point: """ A point in a two-dimensional coordinate plane """ def __init__(self, x, y): """ Create a point with an x and y coordinate """ self.x = x self.y = y def __str__(self): """ Generate a string representation of a point """ return "(" + str(self.x) + "," + str(self.y) + ")" ############################# Part 1 - Rectangle Class############################class Rectangle: """ A rectangle in a two-dimensional coordinate plane """ def __init__(self, bottom_left_x, bottom_left_y, top_right_x, top_right_y): """ Create a rectangle defined by its bottom left and top right corner coordinates """ self.bottom_left = Point(bottom_left_x, bottom_left_y) self.top_right = Point(top_right_x, top_right_y) def __str__(self): """ Generate a string representation of a rectangle """ return ("Rectangle with…