Chapter 16, Problem 16.20PE

Program Plan Intro

Control a group of fans

Program Plan:

• Declare the class “stopwatch” extends “Application”.
• Method Definition for “start() ”
  • Create an object for class “Time”.
  • Create an object for “Text”.
  • Create an object for “Timeline”.
    • Call the method “increase()”.
    • Set the text.
  • Activate the timeline.
  • Create an object for “HBox”.
  • Create an object for start and clear“Button”.
  • Activate the start button.
    • Check whether the state of the button equals to “Start”.
      • Set the text.
      • Activate the “play()”.
    • Check whether the state of the button equals to “Pause”.
      • Set the text.
      • Activate the “pause()”.
    • Check whether the state of the button equals to “Resume”.
      • Set the text.
      • Activate the “play()”.
  • Activate the clear button
    • Set the text.
    • Activate “pause()”.
    • Set the text “Start”.
    • Set the font.
  • Create an object for “BorderPane()”.
  • Set the “h1” to “p1”.
  • Create an object “sc” for scene.
  • Set the stage title.
  • Place the scene in the stage.
  • Using the “show()” to display the stage.
• Method definition for main class.
  • Call the “launch()”.
• Definition for “getSecond()” method.
  • Return the calculated value.
• Definition for “getMinute()” method.
  • Return the calculated value.
• Definition for “getHour()” method.
  • Return the calculated value.
• Definition for “reset()” method.
  • Set the “val” to “0”.
• Definition for “increase()” method.
  • Increment the value of “val”.
• Definition for “toString()” method.
  • Get the hour, minute and second.
• Definition for “getTwodigit()”.
  • Check whether the “val” is less than “10”.
    • Return the value of “val”.