Chapter 8, Problem 14PE

Program Plan Intro

To implement a method “greenScreen(Picture pic1, Picture pic2)”

Program plan:

• In the file “Picture.java”, import necessary packages, and create a class “Picture”,
  • Declare the variables.
  • Define the constructor to construct a picture with no image.
  • Define the parameterized constructor to construct a picture with a given width and height.
  • Define the method “getWidth()” to get the width of this picture.
  • Define the method “getHeight()” to get the height of this picture.
  • Define the method “load()” to load a picture from a given source.
  • Define the method “reload()” to reload this picture, undoing any manipulations.
  • Define the method “pick()” to display a file chooser for picking a picture.
  • Define the method “setImage()” to set the image.
  • Define the method “getColorAt()” to get the color of a pixel.
  • Define the method “setColorAt()” to set the color of a pixel.
• In the file “PictureUtilities.java”, import necessary package, and create a class “PictureUtilities”,
  • Define the method “greenscreen()” to create a green screen picture.
• In the file “PictureViewer.java”, import necessary packages, and create a class “PictureViewer”,
  • Define a method “main()”,
    • Create a “Scanner” object.
    • Prompt the user for the picture to use.
    • Get the first picture.
    • Get the second picture.
    • Create and load the picture.
    • Create the new superimposed picture.