Results 1 to 3 of 3
  1. #1
    socboy6579 is offline Member
    Join Date
    Oct 2010
    Rep Power

    Default Inheritance in Java

    When i try to build and run this file on JCreator, I get

    class rectangle is public, should be declared in a file named

    this is the code
    Java Code:
    public class Dimensions 
    	int length;
    	int width;
    	int height;
    	int a;
    	int volume;
    	int area()
    		a = length * width;
    		volume = length * width * height;
    	public static class Area
    		public static void main(String[] args)
    			Rectangle Rect = new Rectangle();
    			Rect.length = 7;
    			Rect.width = 11;
    			Rect.height = 5;
    			System.out.println("The area of a rectangle with a length of " +Rect.length + "and width " +Rect.width + "is " + Rect.a);
    			System.out.println("The volume of a rectangle with a length of " +Rect.length + "and width " +Rect.width + "and height of " +Rect.height + "is " + Rect.volume);
    Im trying to use inheritance to run this program, and print the volume and the area of the certain dimensions for a rectangle. I dont know how to fix this error.

  2. #2
    Petr's Avatar
    Petr is offline Senior Member
    Join Date
    Jan 2011
    Rep Power


    You need create class Rectangle, ant it need extends Dimensions. Well The compiler don't know what is object Rectangle.
    Skype: petrarsentev

  3. #3
    j2me64's Avatar
    j2me64 is offline Senior Member
    Join Date
    Sep 2009
    Zurich, Switzerland
    Rep Power


    in eclipse i got an error like "Rectangle cannot be resolved to a type" because the class Rectangle is not found. as petr already said you need to create a class Rectangle with the needed members and methods or changing the statement to Dimensions Rect = new Dimensions(); would also work.
    Last edited by j2me64; 02-08-2011 at 04:43 PM.

Similar Threads

  1. Help with java gui and inheritance
    By sssss in forum Advanced Java
    Replies: 8
    Last Post: 01-19-2011, 04:38 AM
  2. Replies: 4
    Last Post: 07-22-2010, 11:22 AM
  3. Inheritance example
    By kris4u4ever in forum New To Java
    Replies: 3
    Last Post: 03-21-2009, 02:53 PM
  4. multiple inheritance in java
    By pawanspace in forum New To Java
    Replies: 2
    Last Post: 12-31-2007, 04:08 AM
  5. Multiple Inheritance in java
    By paty in forum New To Java
    Replies: 4
    Last Post: 08-02-2007, 02:25 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts