Design a class called Writer, which is designed to model a book's writer. It contains:

• Three private instance variables: name(String), email(String), and gender(char of either 'm' or 'f');
• One constructor to initialize the name, email and gender with the given values;

publicWriter(String name, String email,char gender) {......}

• public getters/setters: getName(), getEmail(), setEmail(), and getGender();

(There are no setters for name and gender, as these attributes cannot be changed.)

• A toString() method that returns "Writer[name=?,email=?,gender=?]", e.g., "Writer[name=Girdhar Gopal,[email protected],gender=m]".

Also, design a class called Book to model a book written by one writer. It contains:

• Four private instance variables: name(String), writer(of the class Writer you have just created, assume that a book has one and only one writer), price(double), and qty(int);
• Two constructors:

publicBook (String name, Writer writer,double price) { ...... }
publicBook (String name, Writer writer,double price,int qty) { ...... }

• public methods getName(), getPrice(), setPrice(), getQty(), setQty().
• A toString() that returns "Book[name=?,Writer[name=?,email=?,gender=?],price=?,qty=?". You should reuse Writer’s toString().

class Writer
{
  private String name;
  private String email;
  private char gender;
  public Writer(String name,String email, char gender){
    this.name = name;
    this.email = email;
    this.gender = gender;
  }
  public String getName(){
    return name;
  }
  public String getEmail(){
    return email;
  }
  public void setEmail(String email){
    this.email = email;
  }
  public void setGender(char gender){
    this.gender  = gender;
  }
  public String toString(){
    return "Writer[name="+name+",email="+email+",gender="+gender+"]";
  }
}
class Book
{
  private String name;
  private Writer writer;
  private double price;
  private int qty;
  public Book(String name,Writer writer,double price){
    this.name = name;
    this.writer = writer;
    this.price = price;
  }
  public Book(String name,Writer writer, double price, int qty){
    this.name = name;
    this.writer = writer;
    this.price = price;
    this.qty = qty;
  }
  public String getName(){
    return name;
  }
  public double getPrice(){
    return price;
  }
  public void setPrice(double price){
    this.price = price;
  }
  public int getQty(){
    return qty;
  }
  public void setQty(int qty){
    this.qty = qty;
  }
  public String toString(){
    return "Book[name="+name+","+writer.toString()+",price="+price+",qty="+qty;
  }
}