Big Java, Binder Ready Version: Early Objects
Big Java, Binder Ready Version: Early Objects
6th Edition
ISBN: 9781119056447
Author: Cay S. Horstmann
Publisher: WILEY
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Chapter 20, Problem 9PE
Program Plan Intro

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Program plan:

Filename: “EarthquakeFrame.java”

  • Include the header files
  • Define “EarthquakeFrame” class
    • Declare the required variables and constant variables with the values
    • Define the constructor
      • Create the label for displaying the results
      • Create the label, text field, and button for entering a magnitude
      • Create the control panel that hold the input components
      • Add the control panel
      • Set the visibility
    • Define “createDisplayButton” class
      • Create a button
      • Define the “actionPerformed” method
        • Get the text value from the user
        • Check the “magnitude” value and display the statement according to the input.
        • Clear the text field.
          • Create an object for “ActionListener”
          • Add the button
          • Return the value.

Filename: “EarthquakeViewer.java

  • Define the “EarthquakeViewer” class
    • Define the “main” method
      • Create an object for “EarthquakeFrame” class
      • Set the close operator
      • Set the frame visible.

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