1. Engineering
  2. Computer Science
  3. the following two source code files clockpanejava and clockpanetestjava...

Question: the following two source code files clockpanejava and clockpanetestjava...

Question details

The following two source code files - ClockPane.java and ClockPaneTest.java - are

from the case study on pages 572-577 in the required textbook (Liang, 2015, 10e).

===========================================================

import java.util.Calendar;

import java.util.GregorianCalendar;

import javafx.scene.layout.Pane;

import javafx.scene.paint.Color;

import javafx.scene.shape.Circle;

import javafx.scene.shape.Line;

import javafx.scene.text.Text;

public class ClockPane extends Pane {

private int hour;

private int minute;

private int second;

// Clock pane's width and height

private double w = 250, h = 250;

/** Construct a default clock with the current time */

public ClockPane() {

setCurrentTime();

}

/** Construct a clock with specified hour, minute, and second */

public ClockPane(

int hour,

int minute,

int second) {

this.hour = hour;

this.minute = minute;

this.second = second;

paintClock();

}

/** Return hour */

public int getHour() {

return hour;

}

/** Set a new hour */

public void setHour(int hour) {

this.hour = hour;

paintClock();

}

/** Return minute */

public int getMinute() {

return minute;

}

/** Set a new minute */

public void setMinute(int minute) {

this.minute = minute;

paintClock();

}

/** Return second */

public int getSecond() {

return second;

}

/** Set a new second */

public void setSecond( int second) {

this.second = second;

paintClock();

}

/** Return clock pane's width */

public double getW() {

return w;

}

/** Set clock pane's width */

public void setW( double w) {

this.w = w;

paintClock();

}

/** Return clock pane's height */

public double getH() {

return h;

}

/** Set clock pane's height */

public void setH(double h) {

this.h = h;

paintClock();

}

/* Set the current time for the clock */

public void setCurrentTime() {

// Construct a calendar for the current date and time

Calendar calendar = new GregorianCalendar();

// Set current hour, minute and second

this.hour = calendar.get(Calendar.HOUR_OF_DAY);

this.minute = calendar.get(Calendar.MINUTE);

this.second = calendar.get(Calendar.SECOND);

paintClock(); // Repaint the clock

}

/** Paint the clock */

private void paintClock() {

// Initialize clock parameters

double clockRadius = Math.min(w, h) * 0.8 * 0.5;

double centerX = w / 2;

double centerY = h / 2;

// Draw circle

Circle circle = new Circle(centerX, centerY, clockRadius);

circle.setFill(Color.WHITE);

circle.setStroke(Color.BLACK);

Text t1 = new Text(centerX - 5, centerY - clockRadius + 12, "12");

Text t2 = new Text(centerX - clockRadius + 3, centerY + 5, "9");

Text t3 = newText(centerX + clockRadius - 10, centerY + 3, "3");

Text t4 = new Text(centerX - 3, centerY + clockRadius - 3, "6");

// Draw second hand

double sLength = clockRadius * 0.8;

double secondX = centerX + sLength * Math.sin(second * (2 * Math.PI/ 60));

double secondY = centerY - sLength * Math.cos(second * (2 * Math.PI/ 60));

Line sLine = new Line(centerX, centerY, secondX, secondY);

sLine.setStroke(Color.RED);

// Draw minute hand

double mLength = clockRadius * 0.65;

double xMinute = centerX + mLength * Math.sin(minute * (2 * Math.PI/ 60));

double minuteY = centerY - mLength * Math.cos(minute * (2 * Math.PI/ 60));

Line mLine = new Line(centerX, centerY, xMinute, minuteY);

mLine.setStroke(Color.BLUE);

// Draw hour hand

double

hLength = clockRadius * 0.5;

double hourX = centerX + hLength * Math.sin((hour % 12 + minute / 60.0) * (2 * Math.PI/ 12));

double hourY = centerY - hLength * Math.cos((hour % 12 + minute / 60.0) * (2 * Math.PI/ 12));

Line hLine = new Line(centerX, centerY, hourX, hourY);

hLine.setStroke(Color.GREEN);

getChildren().clear();

getChildren().addAll(circle, t1, t2, t3, t4, sLine, mLine, hLine);

}

}

====================================================

import javafx.application.Application;

import javafx.geometry.Pos;

import javafx.stage.Stage;

import javafx.scene.Scene;

import javafx.scene.control.Label;

import javafx.scene.layout.BorderPane;

public class ClockPaneTest extends Application {

@Override

// Override the start method in the Application class

public void start(Stage primaryStage)

{

// Create a clock and a label

ClockPane clock = new ClockPane();

String timeString = clock.getHour() + ":" + clock.getMinute() + ":" + clock.getSecond();

Label lblCurrentTime = new Label(timeString);

// Place clock and label in border pane

BorderPane pane = new BorderPane();

pane.setCenter(clock);

pane.setBottom(lblCurrentTime);

BorderPane.setAlignment(lblCurrentTime, Pos.TOP_CENTER);

// Create a scene and place it in the stage

Scene scene = new Scene(pane, 250, 250);

primaryStage.setTitle("ClockPaneTest");

// Set the stage title

primaryStage.setScene(scene);

// Place the scene in the stage

primaryStage.show();

// Display the stage

}

/**

* The main method is only needed for the IDE with limited JavaFX support.

* Not needed for running from the command line.

*/

public static void main(String[] args) {

Application.launch(args);

}

}

}

========================================================

The case study develops a class that displays a clock on a pane. If you run the code, it

will generate a clock similar to the following:

ClockPaneTest 12 22:18:10

Create a DetailedClockPane class (DetailedClockPane.java) by modifying the above

ClockPane class. Also, create a DetailedClockPaneTest class

(DetailedClockPaneTest.java) by modifying the above ClockPaneTest class. If you run

the code, it will generate a clock with more details on the hours, minutes, and seconds, as

shown below:

Submit the two source code files - DetailedClockPane.java

and DetailedClockPaneTest.java

Solution by an expert tutor
Blurred Solution
This question has been solved
Subscribe to see this solution