CPS 132 Program 3 Kitchen Timer This Assignment Goes A Littl

Cps 132 Program 3 Kitchen Timerthis Assignment Goes A Little Beyon

Develop a simple kitchen timer program with a display window. The timer should allow setting minutes and seconds, start counting down upon command, and display a flashing "DONE!" message for 10 seconds after expiration before returning to "--:--". The display will update every second to show the remaining time, handling minute and second rollover. When under one minute, the display changes to show seconds and tenths of seconds in the format ss.t. Use the provided DisplayWindow class for display.

You must create a KitchenTimer class with fields for minutes, seconds, and a DisplayWindow object. Include methods for constructing the timer, setting the timer, and starting it which counts down, updates display, and implements flashing "DONE!". For extra credit, animate the end message with a scrolling "—-DONE!—" display.

Paper For Above instruction

The development of a kitchen timer program as described above integrates core programming concepts such as class design, object-oriented principles, event-driven execution, and GUI interaction in Java. This project requires creating a class that manages internal state (time remaining) and user interface output, effectively simulating a real-world kitchen timer.

In designing the KitchenTimer class, the primary considerations revolve around managing the internal counters for minutes and seconds, updating the display, and controlling timer flow with accurate timing intervals. The class should contain two main fields for tracking the remaining minutes and seconds, which may be implemented either as integer fields or through the use of the existing NumberDisplay class for modularity and clarity. Additionally, a DisplayWindow object is used to visually display the timer's current state and messages. This encapsulation adheres to object-oriented principles, maintaining consistency and reusability.

The constructor initializes all internal states, setting remaining minutes and seconds to zero and creating a new display window instance. The setTimer method allows the user to specify a countdown duration by providing minutes and seconds, updates the internal state, and immediately reflects this change on the display. Correct handling of seconds rollover (for example, when seconds exceed 59) is essential to ensure accurate time representations.

The core functionality resides in the startTimer method, which commences the countdown loop. This method should include a delay of approximately one second per iteration, which can be achieved using a helper method such as wait_a_little from the ClockDisplay class — this method should be incorporated into the KitchenTimer class. Within each loop iteration, the timer decrements the seconds, managing minute transition when seconds reach zero, and updates the display. When the timer reaches zero, the "DONE!" message flashes on and off for ten seconds. The flashing effect can be timed by toggling display text each second during this period.

Handling the display for different time formats involves checking if the remaining time is below one minute. When less than a minute remains, the display should switch from mm:ss to ss.t format, counting down tenths of seconds during the final sixty seconds, which adds complexity to the countdown logic. This transition should be smooth, possibly handled by dividing the countdown into phases: one for countdown to 1 minute remaining, and another for final tenths-of-a-second countdown.

For extra credit, the implementation of a scrolling "—-DONE!—" animation enhances visual feedback. This involves displaying a sequence of moving text within the display window, mimicking scrolling text, and requires manipulating the display text over successive frames to create the animation effect, which is triggered after the countdown and replaces the flashing "DONE!".

Accuracy in timing, proper use of object-oriented principles, and effective visual feedback are critical to creating a realistic and engaging kitchen timer experience. The program should not output to the terminal but exclusively use the DisplayWindow object for all display purposes. Proper code organization, comments, and adherence to specified method structures will ensure clarity and maintainability of the implementation.

References

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