Book.java: /* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package chegg2; /** * * @author MDR */ public class Book { private static int booksCount,checkedIn; private int classNumber; private double bookNumber; private String author; private String title; private boolean checked; public Book() { this.classNumber=000; this.bookNumber=000.000; this.author=\"Doe, John\"; this.checked=true; this.title=\"Book Title\"; booksCount++; checkedIn++; } public Book(int cn,double bn,String au,String title,boolean checked) { this.classNumber=cn; this.bookNumber=bn; this.author=au; this.title=title; this.checked=checked; booksCount++; checkedIn++; } public void setClassNo(int cn) { this.classNumber=cn; } public void setBookNo(double bn) { this.bookNumber=bn; } public void setAuthor(String au) { this.author=au; } public void setTitle(String title) { this.title=title; } public void setChecked(boolean checked) { this.checked=checked; if(checked==true) checkedIn++; else checkedIn--; } public int getClassNo() { return this.classNumber; } public double getBookNo() { return this.bookNumber; } public String getAuthor() { return this.author; } public String getTitle() { return this.title; } public boolean getChecked( ) { return this.checked; } public int getBooksCount() { return this.booksCount; } public int getCheckedCount() { return this.checkedIn; } } MyLIbrary.java: /* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package chegg2; import java.io.*; import java.util.Scanner; import java.util.ArrayList; public class MyLibrary { public static void main(String []args) { int op=1; ArrayList books=new ArrayList(0); Scanner scan=new Scanner(System.in); Book book; while(op==1) { book=createBook(); books.add(book); System.out.println(\"do you want create a Book press 1 otherwise press any key\"); op=scan.nextInt(); } System.out.println(\"Books Count:\"+books.get(0).getBooksCount()); System.out.println(\"Books Checked in Count:\"+books.get(0).getCheckedCount()); for(int i=0;i=000.000 &&bookNumber<=999.999) book=new Book(classNumber,bookNumber,author,title,checked); else book=new Book(); return book; } } Output: run: please enter class number of book: 115 please enter book number: 115.225 please enter book author: kiran please enter book title: ABC do you want create a Book press 1 otherwise press any key 1 please enter class number of book: 225 please enter book number: 225.365 please enter book author: taj please enter book title: DEF do you want create a Book press 1 otherwise press any key 1 please enter class number of book: 556 please enter book number: 556.357 please enter book author: SAGAR please enter book title: GHI do you want create a Book press 1 otherwise press any key 1 please enter class number of.

1. Book.java:
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package chegg2;
/**
*
* @author MDR
*/
public class Book {
private static int booksCount,checkedIn;
private int classNumber;
private double bookNumber;
private String author;
private String title;
private boolean checked;
public Book()
{
this.classNumber=000;
this.bookNumber=000.000;
this.author="Doe, John";
this.checked=true;
this.title="Book Title";
booksCount++;
checkedIn++;
}
public Book(int cn,double bn,String au,String title,boolean checked)
{
this.classNumber=cn;
this.bookNumber=bn;
this.author=au;

2. this.title=title;
this.checked=checked;
booksCount++;
checkedIn++;
}
public void setClassNo(int cn)
{
this.classNumber=cn;
}
public void setBookNo(double bn)
{
this.bookNumber=bn;
}
public void setAuthor(String au)
{
this.author=au;
}
public void setTitle(String title)
{
this.title=title;
}
public void setChecked(boolean checked)
{
this.checked=checked;
if(checked==true)
checkedIn++;
else
checkedIn--;
}
public int getClassNo()
{
return this.classNumber;
}
public double getBookNo()

3. {
return this.bookNumber;
}
public String getAuthor()
{
return this.author;
}
public String getTitle()
{
return this.title;
}
public boolean getChecked( )
{
return this.checked;
}
public int getBooksCount()
{
return this.booksCount;
}
public int getCheckedCount()
{
return this.checkedIn;
}
}
MyLIbrary.java:
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package chegg2;
import java.io.*;
import java.util.Scanner;

4. import java.util.ArrayList;
public class MyLibrary {
public static void main(String []args)
{
int op=1;
ArrayList books=new ArrayList(0);
Scanner scan=new Scanner(System.in);
Book book;
while(op==1)
{
book=createBook();
books.add(book);
System.out.println("do you want create a Book press 1 otherwise press any key");
op=scan.nextInt();
}
System.out.println("Books Count:"+books.get(0).getBooksCount());
System.out.println("Books Checked in Count:"+books.get(0).getCheckedCount());
for(int i=0;i=000.000 &&bookNumber<=999.999)
book=new Book(classNumber,bookNumber,author,title,checked);
else
book=new Book();
return book;
}
}
Output:
run:
please enter class number of book:
115
please enter book number:
115.225
please enter book author:
kiran

5. please enter book title:
ABC
do you want create a Book press 1 otherwise press any key
1
please enter class number of book:
225
please enter book number:
225.365
please enter book author:
taj
please enter book title:
DEF
do you want create a Book press 1 otherwise press any key
1
please enter class number of book:
556
please enter book number:
556.357
please enter book author:
SAGAR
please enter book title:
GHI
do you want create a Book press 1 otherwise press any key
1
please enter class number of book:
755
please enter book number:
755.896
please enter book author:
DURGA
please enter book title:
JKL
do you want create a Book press 1 otherwise press any key
1
please enter class number of book:
998

6. please enter book number:
998.658
please enter book author:
MAHESH
please enter book title:
MNO
do you want create a Book press 1 otherwise press any key
0
Books Count:5
Books Checked in Count:5
Book Class Number:115
Book BoookNumber :115.225
Book author:kiran
Book Title:ABC
Book is Checked:true
Book Description:
Philosophy and psychology
Book Class Number:225
Book BoookNumber :225.365
Book author:taj
Book Title:DEF
Book is Checked:true
Book Description:
Religion
Book Class Number:556
Book BoookNumber :556.357
Book author:SAGAR
Book Title:GHI
Book is Checked:true
Book Description:
Pure Science
Book Class Number:755
Book BoookNumber :755.896
Book author:DURGA
Book Title:JKL
Book is Checked:true

7. Book Description:
Arts & recreation
Book Class Number:998
Book BoookNumber :998.658
Book author:MAHESH
Book Title:MNO
Book is Checked:true
Book Description:
History & geography
After checked out one book
Books Count:5
Books Checked in Count:4
BUILD SUCCESSFUL (total time: 3 minutes 4 seconds)
Solution
Book.java:
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package chegg2;
/**
*
* @author MDR
*/
public class Book {
private static int booksCount,checkedIn;
private int classNumber;
private double bookNumber;
private String author;
private String title;
private boolean checked;
public Book()

8. {
this.classNumber=000;
this.bookNumber=000.000;
this.author="Doe, John";
this.checked=true;
this.title="Book Title";
booksCount++;
checkedIn++;
}
public Book(int cn,double bn,String au,String title,boolean checked)
{
this.classNumber=cn;
this.bookNumber=bn;
this.author=au;
this.title=title;
this.checked=checked;
booksCount++;
checkedIn++;
}
public void setClassNo(int cn)
{
this.classNumber=cn;
}
public void setBookNo(double bn)
{
this.bookNumber=bn;
}
public void setAuthor(String au)
{
this.author=au;
}
public void setTitle(String title)
{
this.title=title;

9. }
public void setChecked(boolean checked)
{
this.checked=checked;
if(checked==true)
checkedIn++;
else
checkedIn--;
}
public int getClassNo()
{
return this.classNumber;
}
public double getBookNo()
{
return this.bookNumber;
}
public String getAuthor()
{
return this.author;
}
public String getTitle()
{
return this.title;
}
public boolean getChecked( )
{
return this.checked;
}
public int getBooksCount()
{
return this.booksCount;
}
public int getCheckedCount()

10. {
return this.checkedIn;
}
}
MyLIbrary.java:
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package chegg2;
import java.io.*;
import java.util.Scanner;
import java.util.ArrayList;
public class MyLibrary {
public static void main(String []args)
{
int op=1;
ArrayList books=new ArrayList(0);
Scanner scan=new Scanner(System.in);
Book book;
while(op==1)
{
book=createBook();
books.add(book);
System.out.println("do you want create a Book press 1 otherwise press any key");
op=scan.nextInt();
}
System.out.println("Books Count:"+books.get(0).getBooksCount());
System.out.println("Books Checked in Count:"+books.get(0).getCheckedCount());
for(int i=0;i=000.000 &&bookNumber<=999.999)
book=new Book(classNumber,bookNumber,author,title,checked);
else

11. book=new Book();
return book;
}
}
Output:
run:
please enter class number of book:
115
please enter book number:
115.225
please enter book author:
kiran
please enter book title:
ABC
do you want create a Book press 1 otherwise press any key
1
please enter class number of book:
225
please enter book number:
225.365
please enter book author:
taj
please enter book title:
DEF
do you want create a Book press 1 otherwise press any key
1
please enter class number of book:
556
please enter book number:
556.357
please enter book author:
SAGAR
please enter book title:

12. GHI
do you want create a Book press 1 otherwise press any key
1
please enter class number of book:
755
please enter book number:
755.896
please enter book author:
DURGA
please enter book title:
JKL
do you want create a Book press 1 otherwise press any key
1
please enter class number of book:
998
please enter book number:
998.658
please enter book author:
MAHESH
please enter book title:
MNO
do you want create a Book press 1 otherwise press any key
0
Books Count:5
Books Checked in Count:5
Book Class Number:115
Book BoookNumber :115.225
Book author:kiran
Book Title:ABC
Book is Checked:true
Book Description:
Philosophy and psychology
Book Class Number:225
Book BoookNumber :225.365
Book author:taj
Book Title:DEF

13. Book is Checked:true
Book Description:
Religion
Book Class Number:556
Book BoookNumber :556.357
Book author:SAGAR
Book Title:GHI
Book is Checked:true
Book Description:
Pure Science
Book Class Number:755
Book BoookNumber :755.896
Book author:DURGA
Book Title:JKL
Book is Checked:true
Book Description:
Arts & recreation
Book Class Number:998
Book BoookNumber :998.658
Book author:MAHESH
Book Title:MNO
Book is Checked:true
Book Description:
History & geography
After checked out one book
Books Count:5
Books Checked in Count:4
BUILD SUCCESSFUL (total time: 3 minutes 4 seconds)