DataSetBook

Can you please help me the JAVA program?

DataSetBook.java must have NO instance variables; it should use inheritance instead. DataSetBook class should be as small as possible, but still meet the class specification. Please use DataSetBook extends ArrayList < Book >. Just need methods minBook, maxBook and toString. The code should something like public Book minBook(){ if (super.size() == 0{return null;} //so on

Also please write a Tester.java for the program.

--------------here is Book.java code, please don't change anything from here-------------------

public class Book { private String author; private String title; private int pages;

public Book(String auth, String titl, int pag) { author = auth; title = titl; pages = pag; }

public int getPages() { return pages; }

@Override public String toString() { return "Book [author=" + author + ", title=" + title + ", pages=" + pages + "] "; }

// this is a really poor way to compare Book objects, but it will work for us /* (non-Javadoc) * @see java.lang.Object#equals(java.lang.Object) */ @Override public boolean equals(Object obj) { if (this == obj) return true; if (obj == null) return false; if (getClass() != obj.getClass()) return false; Book other = (Book) obj; if (author == null) { if (other.author != null) return false; } else if (!author.equals(other.author)) return false; if (pages != other.pages) return false; if (title == null) { if (other.title != null) return false; } else if (!title.equals(other.title)) return false; return true; }

}

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Constructor Detail

DataSetBook.java

public DataSetBook() 

Default constructor

Method Detail

add

public void add(Book objToAdd) 

Add a Book to the store

Parameters:

objToAdd - Book to add

size

public int size() 

The number of Books currently in the store

Returns:

number of Book objects

getMin

public Book getMin() 

Determine the Book with the fewest pages

Returns:

null if the store is empty. The book with the fewest pages otherwise. If more than one book has the fewest number of pages, the first one is returned.

getMax

public Book getMax() 

Determine the Book with the most pages

Returns:

null if the store is empty. The book with the most pages otherwise. If more than one book has the most number of pages, the first one is returned.

toString

public java.lang.String toString() 

A String representation of the store.

Overrides:

toString in class java.lang.Object

Returns:

A String containing the number of books in the store, the minimum book, the largest book, and the contents of the entire store.