Question 2 (15 marks) As we have done for Question 1 of Assignment 4, reverse en

Question

Question 2 (15 marks) As we have done for Question 1 of Assignment 4, reverse engineer the memory diagram below: you need t provide the implementation of all the classes, instance variables, constructors and the main method that wil lead to that memory state. Hint: You need a class Book and a class Author, as well as a main method. args myLibrary Sz 0array ot Les miserables" title year 1$62 author title title Barney's Version author aut Author Author nane irth 1302Vietor Hogo death 1115 birth 191Mordeeal Kiehler death 2001

Explanation / Answer

ANS:-

Given that,

Here is the code for Author.java:

class Author
{
    String name;
    int birth;
    int death;
    public Author(String nm, int b, int d)
    {
       name = nm;
       birth = b;
       death = d;
    }
    public String getName() { return name; }
    public int getBirth() { return birth; }
    public int getDeath() { return death; }
    public void setName(String nm) { name = nm; }
    public void setBirth(int b) { birth = b; }
    public void setDeath(int d) { death = d; }
}

Book.java:

class Book
{
    String title;
    int year;
    Author author;
    public Book(String t, int y, Author a)
    {
       title = t;
       year = y;
       author = a;
    }
    public String getTitle() { return title; }
    public int getYear() { return year; }
    public void setTitle(String t) { title = t; }
    public void setYear(int y) { year = y; }
}

And Library.java:

class Library
{
    public static void main(String[] args)
    {
       Book[] myLibrary = new Book[Integer.parseInt(args[0])];
       Author a1 = new Author("Victor Hugo", 1802, 1885);
       myLibrary[0] = new Book("Les miserables", 1862, a1);
       myLibrary[1] = new Book("Lane", 1880, a1);
       Author a2 = new Author("Mordecai Richler", 1931, 2001);
       myLibrary[2] = new Book("Barney's Version", 1997, a2);
    }  
}

And the execution should pass a command line argument 5 like this:

$java Library 5

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