Added analog clock

src/main/java/rvc/timecalc/AnalogClock.java

@@ -0,0 +1,91 @@
+package rvc.timecalc;
+
+import javax.swing.JFrame;
+import javax.swing.JPanel;
+import javax.swing.Timer;
+import java.awt.BasicStroke;
+import java.awt.Color;
+import java.awt.Dimension;
+import java.awt.Font;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import java.awt.RenderingHints;
+import java.util.Calendar;
+import java.util.GregorianCalendar;
+
+//https://kodejava.org/how-do-i-write-a-simple-analog-clock-using-java-2d/
+public class AnalogClock extends JPanel {
+
+    public AnalogClock() {
+        setPreferredSize(new Dimension(400, 300));
+        setBackground(new Color(240,240,240));
+        new Timer(1000, e -> repaint()).start();
+    }
+
+    @Override
+    public void paintComponent(Graphics g) {
+        super.paintComponent(g);
+        Graphics2D g2d = (Graphics2D) g;
+        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
+                RenderingHints.VALUE_ANTIALIAS_ON);
+
+        int side = Math.min(getWidth(), getHeight());
+        int centerX = getWidth() / 2;
+        int centerY = getHeight() / 2;
+
+        GregorianCalendar time = new GregorianCalendar();
+        int second = time.get(Calendar.SECOND);
+        int minute = time.get(Calendar.MINUTE);
+        int hour = time.get(Calendar.HOUR_OF_DAY);
+
+        drawHand(g2d, side / 2 - 10, second / 60.0, 0.5f, Color.RED);
+        drawHand(g2d, side / 2 - 20, minute / 60.0, 2.0f, Color.BLUE);
+        drawHand(g2d, side / 2 - 40, hour / 12.0, 4.0f, Color.BLACK);
+
+        // Draw clock numbers and circle
+        drawClockFace(g2d, centerX, centerY, side / 2 - 40);
+    }
+
+    private void drawHand(Graphics2D g2d, int length, double value,
+            float stroke, Color color) {
+        length= length - 4;
+        double angle = Math.PI * 2 * (value - 0.25);
+        int endX = (int) (getWidth() / 2 + length * Math.cos(angle));
+        int endY = (int) (getHeight() / 2 + length * Math.sin(angle));
+
+        g2d.setColor(Color.LIGHT_GRAY);
+        g2d.setStroke(new BasicStroke(stroke));
+        g2d.drawLine(getWidth() / 2 - 4, getHeight() / 2 + 4, endX - 4, endY + 4);
+    }
+
+    // Added method to draw the clock face and numbers
+    private void drawClockFace(Graphics2D g2d, int centerX, int centerY,
+            int radius) {
+        g2d.setStroke(new BasicStroke(2.0f));
+        g2d.setColor(Color.LIGHT_GRAY);
+        System.out.println("centerX=" + centerX);
+        System.out.println("centerY=" + centerY);
+        System.out.println("radius=" + radius);
+        g2d.drawOval(1, 1, centerX * 2 - 2, centerY * 2 - 2);
+        g2d.drawOval(2, 2, centerX * 2 - 4, centerY * 2 - 4);
+//        g2d.drawOval(3, 3, centerX * 2 - 6, centerY * 2 - 6);
+//        g2d.drawOval(4, 4, centerX * 2 - 8, centerY * 2 - 8);
+
+        for (int i = 1; i <= 12; i++) {
+            double angle = Math.PI * 2 * (i / 12.0 - 0.25);
+            int dx = centerX + (int) ((radius + 20) * Math.cos(angle)) - 4;
+            int dy = centerY + (int) ((radius + 20) * Math.sin(angle)) + 4;
+
+            g2d.setFont(new Font("sans", Font.BOLD, 16));
+            g2d.drawString(Integer.toString(i), dx, dy);
+        }
+    }
+
+    public static void main(String[] args) {
+        JFrame frame = new JFrame("Analog Clock");
+        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        frame.add(new AnalogClock());
+        frame.pack();
+        frame.setVisible(true);
+    }
+}

src/main/java/rvc/timecalc/Main.java

@@ -19,7 +19,7 @@ public class Main {
                     JOptionPane.PLAIN_MESSAGE,
                     null,
                     null,
-                    ""
+                    "7:00"
             );
             String overTime = (String) JOptionPane.showInputDialog(
                     null,

src/main/java/rvc/timecalc/TimeCalc.java

@@ -79,7 +79,7 @@ public class TimeCalc {
         text.setBackground(new Color(238,238,238));
         window.add(text);
 
-        window.setSize(550,350);
+        window.setSize(800,350);
         window.setLayout(null);
         window.setVisible(true);
         window.setTitle("Time Calc");
@@ -94,6 +94,9 @@ public class TimeCalc {
         exitButton.addActionListener(e -> System.exit(0));
         restartButton.addActionListener(e -> {window.setVisible(false); stopBeforeEnd = true;});
 
+        AnalogClock analogClock = new AnalogClock();
+        analogClock.setBounds(550,10,200, 200);
+        window.add(analogClock);
 
         StringBuilder sb = null;
         while (true) {