img
Class Picture

java.lang.Object
  img.SimplePicture
      img.Picture

All Implemented Interfaces:

DigitalPicture

public class Picture
extends SimplePicture

Picture class from Guzdial and Ericson with explanatory comments enhanced by sdc@cs.albany.edu A class that represents a picture. This class inherits from SimplePicture and allows the student to add functionality to the Picture class. Copyright Georgia Institute of Technology 2004-2005

Author:

Barbara Ericson ericson@cc.gatech.edu

Constructor Summary

Picture()
Constructor that takes no arguments

Picture(int width, int height)
Wow, a third form of constructor! Constructor that takes the width and height

Picture(Picture copyPicture)
Whoops, yet another! Constructor that takes a picture and creates a copy of that picture

Picture(java.lang.String fileName)
In Java, constructors (and other methods) can be "Polymorphic".

Method Summary

void	blacken(int row)
java.lang.String	toString() This method DOES NOT (yes, NOT) PRINT anything! What code could a program using the Picture class have to use this method to print a string form of a Picture? Method to return a string with information about this picture.

Methods inherited from class img.SimplePicture

addMessage, copyPicture, createGraphics, explore, getBasicPixel, getBufferedImage, getExtension, getFileName, getGraphics, getGraphics2D, getHeight, getImage, getPictureFrame, getPictureWithHeight, getPixel, getPixels, getTitle, getTranslationEnclosingRectangle, getWidth, load, load, loadPictureAndShowIt, repaint, setAllPixelsToAColor, setBasicPixel, setPictureFrame, setTitle, show, write

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Picture

public Picture()

Constructor that takes no arguments

Picture

public Picture(java.lang.String fileName)

In Java, constructors (and other methods) can be "Polymorphic". Polymorphic methods have the SAME NAME but MULTIPLE FORMS. Each form has a really different body. Which body is called depends on the types of arguments coded in the call. Here is a second polymorphic form for Picture's constructor. Constructor that takes a file name and creates the picture

Parameters:

fileName - the name of the file to create the picture from

Picture

public Picture(int width,
               int height)

Wow, a third form of constructor! Constructor that takes the width and height

Parameters:

width - the width of the desired picture

height - the height of the desired picture

Picture

public Picture(Picture copyPicture)

Whoops, yet another! Constructor that takes a picture and creates a copy of that picture

Method Detail

toString

public java.lang.String toString()

This method DOES NOT (yes, NOT) PRINT anything! What code could a program using the Picture class have to use this method to print a string form of a Picture? Method to return a string with information about this picture.

Overrides:

toString in class SimplePicture

Returns:

a string with information about the picture such as fileName, height and width.

blacken

public void blacken(int row)