Thread: getCurrencyInstance = Cannot find symbol

Hi. Please review my code. I'm trying to use println to print an RRP variable of $79.99 for book1. But I think it cannot recognize it because RRP is declared in the Main class (Book.java) whilst I am trying to use it from the driver class (Bookshelf.java). Can someone please advise me what to do?

Main class:

 
//Book.java
//conatains instance data for title, author, publisher, and copyright date.
//Has getter and setter and toString returns a multi line formatted 
//description of each book.
 
public class Book
{
  private String copyrightDate;
  private String title;
  private String author;
  private String publisher;
  private double RRP;
 
 
  //constructor:
  public Book ()
  {
    copyrightDate = "11.04.1993";
    title = "A book about Bookish People"; 
    author = "Jim McMorrison";
    publisher = "Selwyn House";
    RRP = 79.99;
  }
 
  //getter
  public double getRRP ()
  {
    return RRP;
  }
 
  //setter
  public void setRRP (double value)
  {
    RRP = value;
  }
 
  //getter
  public String getCopyrightDate ()
  {
    return copyrightDate;
  }
 
  //setter
  public void setCopyrightDate (String value)
  {
    copyrightDate = value;
  }
 
  //getter
  public String getTitle ()
  {
    return title;
  }
 
  //setter
  public void setTitle (String value)
  {
    title = value;
  }
 
 
  //getter
  public String getAuthor ()
  {
    return author;
  }
 
 
  //setter
  public void setAuthor (String value)
  {
    author = value;
  }
 
 
  //getter
  public String getPublisher ()
  {
    return publisher;
  }
 
 
  //setter
  public void setPublisher (String value)
  {
    publisher = value;
  }
 
}

Driver class:

 
//Bookshelf.java
//a driver class to instantiate and update several Book objects.
 
import java.text.NumberFormat;
 
public class Bookshelf
{
  public static void main (String[] args)
  {
  Book Book1, Book2;
 
  Book1 = new Book ();
 
  NumberFormat fmt1 = NumberFormat.getCurrencyInstance();
 
  Book1.setAuthor ("Balls McClary");
  Book1.setCopyrightDate ("8.04.2007");
 
  System.out.println ();
  System.out.println ("\tTitle is: " + Book1.getTitle());
  System.out.println ("\tAuthor: " + Book1.getAuthor ());
  System.out.println ("\tDate of publication: " + 
                     Book1.getCopyrightDate());
  System.out.println ("\tPublishers House: " + Book1.getPublisher());
  System.out.println ("The recommended retail price is: " + 
                     fmt1.format(RRP));  
 
  System.out.println ();
 
 }
}

And the error:

craig@craig-laptop:~/Documents/panda/MyPrograms$ javac Bookshelf.java
Bookshelf.java:26: error: cannot find symbol
                     fmt1.format(RRP));  
                                 ^
  symbol:   variable RRP
  location: class Bookshelf
1 error

But I think it cannot recognize it because RRP is declared in the Main class (Book.java) whilst I am trying to use it from the driver class (Bookshelf.java).

Yes, you're right.

What you should do is not use RRP but, instead, use a getter method for the price as you do for Book1.getTitle(), Book1.getPublisher() etc.

---

Java coding conventions say that methods and variables should start with a lowercase letter: so book1 with a small b. RRP is a funny case - you could use rRP although I think I would call it price or rrPrice.

Thanks for your help, that worked a charm

You're welcome.