EBK BIG JAVA: EARLY OBJECTS, INTERACTIV
EBK BIG JAVA: EARLY OBJECTS, INTERACTIV
6th Edition
ISBN: 8220102010314
Author: Horstmann
Publisher: YUZU
Question
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Chapter 20, Problem 5PE
Program Plan Intro

ThreeColorsComboBoxFrame

Program plan:

ThreeColorsComboBoxFrame.java:

  • Create a class named “ThreeColorsComboBoxFrame”. Inside the class,
    • Define the required components.
    • Set the width and height of the frame.
    • Define the “ThreeColorsComboBoxFrame ()” method.
      • Set the frame size
      • Define the panel
      • Add the components to the frame
      • Create the control panel.
    • Define the “createControlPanel ()” method.
      • Define the color combo box.
      • Add the item
      • Set the background color.
    • Define the class “ColorListener ()” and inside,
      • Define the action listener method.
        • Set the initial color.
        • Validate and assign the colors.
        • Add the colors to the background.
        • Create a panel and position them.

ThreeColorsViewer.java

  • Create a class named “ThreeColorsViewer”. Inside the class,
    • Define the “main()” method
      • Define the frame
      • Set the close operation
      • Set the title
      • Set the visibility.

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