without_comments

import java.util.Date;
import java.util.Scanner;
import java.text.*;
import java.util.Calendar;

public class Book
{	
	private int id;
	private String title;
	private String author;
	private Date dateOfPublication;

	public static final String DATE_FORMAT = "dd.MM.yyyy";
	
	
	public int age()
	{
		Calendar cal = Calendar.getInstance();
		Date today = cal.getTime();
	
		
		//publishing date
		Date bookdate = cal.getTime();
		
		long dateSubstract = today.getTime() - bookdate.getTime();	
		long time = 1000 * 60 * 60 * 24;
		
		long ageDays = dateSubstract/time;
		System.out.println(ageDays);
		
		
		//make long to int	
		int ageDaysInt = (int) ageDays;
			
		return ageDaysInt;
		
		
	}
	
	///////////////////////////////////////////////////////////////////////
	
		public void setId(int id)
        {this.id = id;}
        public int getId()
        {return id;}

        public void setTitle(String title)
        {this.title = title;}
        public String getTitle()
        {return title;}

        public void setAuthor(String author)
        {this.author = author;}
		public String getAuthor()
        {return author;}

        public void setDateOfPublication(Date dateOfPublication)
        {this.dateOfPublication = dateOfPublication;}
		public Date getDateOfPublication()
        {return dateOfPublication;}
	
	
	
	
	//////////////////////////////////////////////////////////////////////////
	public String toString()
	{
		//convert id to string and put everything together
		
		
		String newDate = dateToString(DateOfPublication);
		
		
	}
	
	
	
	public void input() 
	{
		Scanner scn = new Scanner( System.in );
		System.out.print( "Please enter id: " );
		//int
	
		System.out.println("Please enter title: ");
		//string
		
		System.out.println("Please enter author: ");
		//string
		
		System.out.println("Please enter date of publication: ");
		//date
	}
	
	public static String dateToString( Date d ) //done
	{
		SimpleDateFormat fmt = new SimpleDateFormat( DATE_FORMAT );
		return fmt.format( d );
	}
	
	
	
	public static Date stringToDate( String s ) //done
	{
		Date r = null;
		try {
			SimpleDateFormat fmt = new SimpleDateFormat( DATE_FORMAT );
			r = fmt.parse( s );
		} catch ( ParseException e ){
			System.err.println( e );
			System.exit(1);
		}
		return r;
	}
	
	
	
	
}