Resolvido: Obrigado @MadProgrammer

Eu troqueig2.rotate(Math.toRadians(180.0)); porg2.scale(1, -1); obrigado ^^

Eu escrevi programa para mostrar Digital Clock com espelho (Vertical Flip)

Este é o meu código

    import java.awt.*;
    import java.awt.font.GlyphVector;
    import javax.swing.*;
    import java.util.*;

    public class DigitalClock extends JFrame implements Runnable {
        /**
         * @author HASSAN
         */
        Thread runner; // declare global objects
        Font clockFont;
        Shape mirror;

        public DigitalClock() {
            super("Digital Clock - Hassan Sharaf 12MCMB33");
            setSize(600, 500);
            setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            setVisible(true);
            setResizable(false); // create window
            setLocationRelativeTo(null);
            clockFont = new Font("digifacewide", Font.BOLD, 100); // create font

            Container contentArea = getContentPane();
            ClockPanel timeDisplay = new ClockPanel();
            contentArea.add(timeDisplay); // add components
            setContentPane(contentArea);
            start(); // start thread running
        }

        public class ClockPanel extends JPanel {

            public void paintComponent(Graphics painter) {
                // super.paintComponent(painter);
                Graphics2D g2 = (Graphics2D) painter;
                g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
                g2.setFont(clockFont); // create clock components
                g2.setColor(Color.black);
                g2.drawString(timeNow(), 20, 140);
                GlyphVector v = clockFont.createGlyphVector(getFontMetrics(clockFont).getFontRenderContext(), timeNow());
                mirror = v.getOutline();
                g2.translate(553, 160);
                g2.rotate(Math.toRadians(180.0));   
                g2.fill(mirror);
                        g2.draw(mirror);

            }
        }

        // get current time
        public String timeNow() {
            Calendar now = Calendar.getInstance();
            int hrs = now.get(Calendar.HOUR_OF_DAY);
            int min = now.get(Calendar.MINUTE);
            int sec = now.get(Calendar.SECOND);
            String time = zero(hrs) + ":" + zero(min) + ":" + zero(sec);
            return time;
        }

        public String zero(int num) {
            String number = (num < 10) ? ("0" + num) : ("" + num);
            return number; // Add leading zero if needed
        }

        public void start() {
            if (runner == null) {
                runner = new Thread(this);
            }
            runner.start();
            // method to start thread
        }

        public void run() {
            while (runner == Thread.currentThread()) {
                repaint();
                // define thread task
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    System.out.println("Thread failed");
                }
            }
        }

        // create main method
        public static void main(String[] args) {
            DigitalClock clock = new DigitalClock();
        }
    }

Problema: Eu usei o método rotate (), mas na verdade eu não quero girar o clock que eu quero virar verticalmenteQuestão: Como posso virar a forma(não imagem)?