Complete Chapter 7 Programming Activity 1 Writing a Class De

Complete Chapter 7, Programming Activity 1: Writing a Class Definition, Part 1.

Make sure you study the Programming Activity 7-1 Guidance document

Need it in Java please.

Solution

So you need an example code that implements every aspect of class building:
     The below-given code defines a book that contains four private data members of different types.
     We shall use constuctors to initialize the variables
     We have declared all the setters and getter methods as required.
See comments for clarification

class Book {
    private String title;
    private String author;
    private int pages;
    private double price;
   
    Book() { //non parameterized constructor
        title = author = null;
        price = pages = 0;
    }
  
    Book(String title, String author, int pages, double price){ //parameterized constructor
        this.title = title;
        this.author = author;
        this.pages = pages;
        this.price = price;
    }
    //all setter methods are given below
    void setTitle(String title){
        this.title = title; //check the use of this keyword
    }
  
    void setAuthor(String newAuthor){
        author = newAuthor; //when parameter name is different, this keyword is optional
    }
  
    void setPages(int pages){
        this.pages = pages;
    }
  
    void setPrice(double newPrice){
        this.price = newPrice; //when parameter name is different, this keyword is optional
    }
    //All getter methods are defined below
    String getTitle(){
        return title;
    }
  
    String getAuthor(){
        return author;
    }
    int getPages(){
        return pages;
    }
    double getPrice(){
        return price;
    }
   
}