In Java, b1's "private" instance variables can be accessed by not only
b1, but also by all other objects in b1's class.

----------------------------------------------------------
--- Example (Book class)

/* public */ class Book
{
    private String title = "Some Title";
    private String author = "John Jones";
    private int year = 1999;

    public static Book otherBook; //a class variable to tell b2 & all other
				  //Books that b1 exists.

    // -------------
    // Accessors:

    public String getBothTitles()
    {
	// every book also reports b1's (private) title.
	return title + otherBook.title; 
    }

    public String getTitle()
    {
	return title;
    }
 
...
}
----------------------------------------------------------
--- Instantiating and using Books

/* Example application
   Required header comments have been omitted */

import java.lang.reflect.Array;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;

public class TestApplication
{

    public static void main (String[] args) throws IOException
    {
	/* AbstractClass a = new AbstractClass(); wont compile, of course */

	Book b1 = new Book();
	Book b2 = new Book();
	b1.setTitle("Java");
	b2.setTitle("Fortran");

	Book.otherBook = b1;   //now b2 can find out about b1.
	System.out.println (b2.getBothTitles());
	}
}

----------------------------------------------------------
--- Sample run:
gold> java TestApplication
FortranJava