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Thread: getCurrencyInstance = Cannot find symbol

  1. #1
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    Default 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


  2. #2
    Super Moderator pbrockway2's Avatar
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    Default Re: getCurrencyInstance = Cannot find symbol

    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.

  3. The Following User Says Thank You to pbrockway2 For This Useful Post:

    craigjlner (May 12th, 2013)

  4. #3
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    Default Re: getCurrencyInstance = Cannot find symbol

    Thanks for your help, that worked a charm

  5. #4
    Super Moderator pbrockway2's Avatar
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    Default Re: getCurrencyInstance = Cannot find symbol

    You're welcome.

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