如何用java实现，1.白色的结账单，2.如何把结账单打印出来，如何写？

Question

如何用java实现，1.白色的提示结账面（就是图片中间的白色图片跟上面显示的结账单），2.用什么方法如何打印出来结账单

我上传了附件，有会的帮忙讲解下，或是写个代码带个注释！

 

问题补充
第一个问题知道了，第二个问题有谁知道？就是打印结账单如何打印，写个简单的出来，最好加个注释，非常感谢！
问题补充
太强悍了！！！

Answer 1

public class PrintPreviewDialog extends JDialog implements ActionListener {
    /**
     * 
     */
    private static final long serialVersionUID = -7320342468005550954L;
    private JButton nextButton = new JButton("Next");
    private JButton previousButton = new JButton("Previous");
    private JButton closeButton = new JButton("Close");
    private JPanel buttonPanel = new JPanel();
    private PreviewCanvas canvas;

    public PrintPreviewDialog(Frame parent, String title, boolean modal,
            PrintTest pt, String str) {
        super(parent, title, modal);
        canvas = new PreviewCanvas(pt, str);
        setLayout();
    }

    private void setLayout() {
        this.getContentPane().setLayout(new BorderLayout());
        this.getContentPane().add(canvas, BorderLayout.CENTER);

        nextButton.setMnemonic('N');
        nextButton.addActionListener(this);
        buttonPanel.add(nextButton);
        previousButton.setMnemonic('N');
        previousButton.addActionListener(this);
        buttonPanel.add(previousButton);
        closeButton.setMnemonic('N');
        closeButton.addActionListener(this);
        buttonPanel.add(closeButton);
        this.getContentPane().add(buttonPanel, BorderLayout.SOUTH);
        this.setBounds((int) ((SystemProperties.SCREEN_WIDTH - 400) / 2),
                (int) ((SystemProperties.SCREEN_HEIGHT - 400) / 2), 400, 400);
    }

    public void actionPerformed(ActionEvent evt) {
        Object src = evt.getSource();
        if (src == nextButton)
            nextAction();
        else if (src == previousButton)
            previousAction();
        else if (src == closeButton)
            closeAction();
    }

    private void closeAction() {
        this.setVisible(false);
        this.dispose();
    }

    private void nextAction() {
        canvas.viewPage(1);
    }

    private void previousAction() {
        canvas.viewPage(-1);
    }

    class PreviewCanvas extends JPanel {
        private String printStr;
        private int currentPage = 0;
        private PrintTest preview;

        public PreviewCanvas(PrintTest pt, String str) {
            printStr = str;
            preview = pt;
        }

        public void paintComponent(Graphics g) {
            super.paintComponent(g);
            Graphics2D g2 = (Graphics2D) g;
            PageFormat pf = PrinterJob.getPrinterJob().defaultPage();

            double xoff;
            double yoff;
            double scale;
            double px = pf.getWidth();
            double py = pf.getHeight();
            double sx = getWidth() - 1;
            double sy = getHeight() - 1;
            if (px / py < sx / sy) {
                scale = sy / py;
                xoff = 0.5 * (sx - scale * px);
                yoff = 0;
            } else {
                scale = sx / px;
                xoff = 0;
                yoff = 0.5 * (sy - scale * py);
            }
            g2.translate((float) xoff, (float) yoff);
            g2.scale((float) scale, (float) scale);

            Rectangle2D page = new Rectangle2D.Double(0, 0, px, py);
            g2.setPaint(Color.white);
            g2.fill(page);
            g2.setPaint(Color.black);
            g2.draw(page);

            try {
                preview.print(g2, pf, currentPage);
            } catch (PrinterException pe) {
                g2.draw(new Line2D.Double(0, 0, px, py));
                g2.draw(new Line2D.Double(0, px, 0, py));
            }
        }

        public void viewPage(int pos) {
            int newPage = currentPage + pos;
            if (0 <= newPage && newPage < preview.getPagesCount(printStr)) {
                currentPage = newPage;
                repaint();
            }
        }
    }
}

public class PrintTest extends JFrame implements ActionListener, Printable {
    /**
     * 
     */
    private static final long serialVersionUID = -1898922341899485331L;
    private JButton printTextButton = new JButton("Print Text");
    private JButton previewButton = new JButton("Print Preview");
    private JButton printText2Button = new JButton("Print Text2");
    private JButton printFileButton = new JButton("Print File");
    private JButton printFrameButton = new JButton("Print Frame");
    private JButton exitButton = new JButton("Exit");
    private JLabel tipLabel = new JLabel("");
    private JTextArea area = new JTextArea();
    private JScrollPane scroll = new JScrollPane(area);
    private JPanel buttonPanel = new JPanel();

    private int PAGES = 0;
    private String printStr;

    public PrintTest() {
        this.setTitle("Print Test");
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        this.setBounds((int) ((SystemProperties.SCREEN_WIDTH - 800) / 2),
                (int) ((SystemProperties.SCREEN_HEIGHT - 600) / 2), 800, 600);
        initLayout();
    }

    private void initLayout() {
        this.getContentPane().setLayout(new BorderLayout());
        this.getContentPane().add(scroll, BorderLayout.CENTER);
        printTextButton.setMnemonic('P');
        printTextButton.addActionListener(this);
        buttonPanel.add(printTextButton);
        previewButton.setMnemonic('v');
        previewButton.addActionListener(this);
        buttonPanel.add(previewButton);
        printText2Button.setMnemonic('e');
        printText2Button.addActionListener(this);
        buttonPanel.add(printText2Button);
        printFileButton.setMnemonic('i');
        printFileButton.addActionListener(this);
        buttonPanel.add(printFileButton);
        printFrameButton.setMnemonic('F');
        printFrameButton.addActionListener(this);
        buttonPanel.add(printFrameButton);
        exitButton.setMnemonic('x');
        exitButton.addActionListener(this);
        buttonPanel.add(exitButton);
        this.getContentPane().add(buttonPanel, BorderLayout.SOUTH);
    }

    public void actionPerformed(ActionEvent evt) {
        Object src = evt.getSource();
        if (src == printTextButton) {
            printTextAction();
        } else if (src == previewButton) {
            previewAction();
        } else if (src == printText2Button) {
            printText2Action();
        } else if (src == printFileButton) {
            printFileAction();
        } else if (src == printFrameButton) {
            printFrameAction();
        } else if (src == exitButton) {
            exitApp();
        }
    }

    public int print(Graphics g, PageFormat pf, int page)
            throws PrinterException {
        Graphics2D g2 = (Graphics2D) g;
        g2.setPaint(Color.black);
        if (page >= PAGES) {
            return Printable.NO_SUCH_PAGE;
        }
        g2.translate(pf.getImageableX(), pf.getImageableY());
        drawCurrentPageText(g2, pf, page);
        return Printable.PAGE_EXISTS;
    }

    private void drawCurrentPageText(Graphics2D g2, PageFormat pf, int page) {
        Font f = area.getFont();
        String s = getDrawText(printStr)[page];
        String drawText;
        float ascent = 16;
        int k, i = f.getSize(), lines = 0;
        while (s.length() > 0 && lines < 54) {
            k = s.indexOf('\n');
            if (k != -1) {
                lines += 1;
                drawText = s.substring(0, k);
                g2.drawString(drawText, 0, ascent);
                if (s.substring(k + 1).length() > 0) {
                    s = s.substring(k + 1);
                    ascent += i;
                }
            } else {
                lines += 1;
                drawText = s;
                g2.drawString(drawText, 0, ascent);
                s = "";
            }
        }
    }

    public String[] getDrawText(String s) {
        String[] drawText = new String[PAGES];
        for (int i = 0; i < PAGES; i++) {
            drawText[i] = "";
        }

        int k, suffix = 0, lines = 0;
        while (s.length() > 0) {
            if (lines < 54) {
                k = s.indexOf('\n');
                if (k != -1) {
                    lines += 1;
                    drawText[suffix] = drawText[suffix] + s.substring(0, k + 1);
                    if (s.substring(k + 1).length() > 0) {
                        s = s.substring(k + 1);
                    }
                } else {
                    lines += 1;
                    drawText[suffix] = drawText[suffix] + s;
                    s = "";
                }
            } else {
                lines = 0;
                suffix++;
            }
        }
        return drawText;
    }

    public int getPagesCount(String curStr) {
        int page = 0;
        int position, count = 0;
        String str = curStr;
        while (str.length() > 0) {
            position = str.indexOf('\n');
            count += 1;
            if (position != -1) {
                str = str.substring(position + 1);
            } else {
                str = "";
            }
        }

        if (count > 0) {
            page = count / 54 + 1;
        }

        return page;
    }

    private void printTextAction() {
        printStr = area.getText().trim();
        if (printStr != null && printStr.length() > 0) {
            PAGES = getPagesCount(printStr);
            PrinterJob myPrtJob = PrinterJob.getPrinterJob();
            PageFormat pageFormat = myPrtJob.defaultPage();
            myPrtJob.setPrintable(this, pageFormat);
            if (myPrtJob.printDialog()) {
                try {
                    myPrtJob.print();
                } catch (PrinterException pe) {
                    pe.printStackTrace();
                }
            }
        } else {
            JOptionPane.showConfirmDialog(null,
                    "Sorry, Printer Job is Empty, Print Cancelled!", "Empty",
                    JOptionPane.DEFAULT_OPTION, JOptionPane.WARNING_MESSAGE);
        }
    }

    private void previewAction() {
        printStr = area.getText().trim();
        PAGES = getPagesCount(printStr);
        new PrintPreviewDialog(this, "Print Preview", true, this, printStr)
                .setVisible(true);
    }

    private void printText2Action() {
        printStr = area.getText().trim();
        if (printStr != null && printStr.length() > 0) {
            PAGES = getPagesCount(printStr);
            DocFlavor flavor = DocFlavor.SERVICE_FORMATTED.PRINTABLE;
            PrintService printService = PrintServiceLookup
                    .lookupDefaultPrintService();
            DocPrintJob job = printService.createPrintJob();
            PrintRequestAttributeSet pras = new HashPrintRequestAttributeSet();
            DocAttributeSet das = new HashDocAttributeSet();
            Doc doc = new SimpleDoc(this, flavor, das);

            try {
                job.print(doc, pras);
            } catch (PrintException pe) {
                pe.printStackTrace();
            }
        } else {
            JOptionPane.showConfirmDialog(null,
                    "Sorry, Printer Job is Empty, Print Cancelled!", "Empty",
                    JOptionPane.DEFAULT_OPTION, JOptionPane.WARNING_MESSAGE);
        }
    }

    private void printFileAction() {
        JFileChooser fileChooser = new JFileChooser(SystemProperties.USER_DIR);
        // fileChooser.setFileFilter(new com.szallcom.file.JavaFilter());
        int state = fileChooser.showOpenDialog(this);
        if (state == JFileChooser.APPROVE_OPTION) {
            File file = fileChooser.getSelectedFile();
            PrintRequestAttributeSet pras = new HashPrintRequestAttributeSet();
            DocFlavor flavor = DocFlavor.INPUT_STREAM.AUTOSENSE;
            PrintService printService[] = PrintServiceLookup
                    .lookupPrintServices(flavor, pras);
            PrintService defaultService = PrintServiceLookup
                    .lookupDefaultPrintService();
            PrintService service = ServiceUI.printDialog(null, 200, 200,
                    printService, defaultService, flavor, pras);
            if (service != null) {
                try {
                    DocPrintJob job = service.createPrintJob();
                    FileInputStream fis = new FileInputStream(file);
                    DocAttributeSet das = new HashDocAttributeSet();
                    Doc doc = new SimpleDoc(fis, flavor, das);
                    job.print(doc, pras);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
    }

    private void printFrameAction() {
        Toolkit kit = Toolkit.getDefaultToolkit();
        Properties props = new Properties();
        props.put("awt.print.printer", "durango");
        props.put("awt.print.numCopies", "2");
        if (kit != null) {
            PrintJob printJob = kit.getPrintJob(this, "Print Frame", props);
            if (printJob != null) {
                Graphics pg = printJob.getGraphics();
                if (pg != null) {
                    try {
                        this.printAll(pg);
                    } finally {
                        pg.dispose();
                    }
                }
                printJob.end();
            }
        }
    }

    private void exitApp() {
        this.setVisible(false);
        this.dispose();
        System.exit(0);
    }

    public static void main(String[] args) {
        new PrintTest().setVisible(true);
    }
}

public final class SystemProperties {
    public static final double SCREEN_WIDTH = Toolkit.getDefaultToolkit()
            .getScreenSize().getWidth();
    public static final double SCREEN_HEIGHT = Toolkit.getDefaultToolkit()
            .getScreenSize().getHeight();
    public static final String USER_DIR = System.getProperty("user.dir");
    public static final String USER_HOME = System.getProperty("user.home");
    public static final String USER_NAME = System.getProperty("user.name");
    public static final String FILE_SEPARATOR = System
            .getProperty("file.separator");
    public static final String LINE_SEPARATOR = System
            .getProperty("line.separator");
    public static final String PATH_SEPARATOR = System
            .getProperty("path.separator");
    public static final String JAVA_HOME = System.getProperty("java.home");
    public static final String JAVA_VENDOR = System.getProperty("java.vendor");
    public static final String JAVA_VENDOR_URL = System
            .getProperty("java.vendor.url");
    public static final String JAVA_VERSION = System
            .getProperty("java.version");
    public static final String JAVA_CLASS_PATH = System
            .getProperty("java.class.path");
    public static final String JAVA_CLASS_VERSION = System
            .getProperty("java.class.version");
    public static final String OS_NAME = System.getProperty("os.name");
    public static final String OS_ARCH = System.getProperty("os.arch");
    public static final String OS_VERSION = System.getProperty("os.version");
    public static final String[] FONT_NAME_LIST = GraphicsEnvironment
            .getLocalGraphicsEnvironment().getAvailableFontFamilyNames();
    public static final Font[] FONT_LIST = GraphicsEnvironment
            .getLocalGraphicsEnvironment().getAllFonts();
}