class Burst extends AbstractTool {

    static {
        addVersion("$Id: Burst.java 3271 2008-04-18 20:39:42Z xlv $");
    }

    /**
     * Constructs a Burst object.
     */
    public Burst() {
        FileArgument f = new FileArgument(this, "srcfile", "The file you want to split", false, new PdfFilter());
        f.setLabel(new PdfInformationPanel());
        arguments.add(f);
    }

    /**
     * Divide PDF file into pages.
     *
     * @param args String[]
     */
    public static void main(String[] args) {
        Burst tool = new Burst();
        if (args.length < 1) {
            System.err.println(tool.getUsage());
        }
        tool.setMainArguments(args);
        tool.execute();
    }

    /**
     * @see com.lowagie.toolbox.AbstractTool#createFrame()
     */
    protected void createFrame() {
        internalFrame = new JInternalFrame("Burst", true, false, true);
        internalFrame.setSize(300, 80);
        internalFrame.setJMenuBar(getMenubar());
        System.out.println("=== Burst OPENED ===");
    }

    /**
     * @see com.lowagie.toolbox.AbstractTool#execute()
     */
    public void execute() {<FILL_FUNCTION_BODY>}

    /**
     * @param arg StringArgument
     * @see com.lowagie.toolbox.AbstractTool#valueHasChanged(com.lowagie.toolbox.arguments.AbstractArgument)
     */
    public void valueHasChanged(AbstractArgument arg) {
        if (internalFrame == null) {
            // if the internal frame is null, the tool was called from the command line
            return;
        }
        // represent the changes of the argument in the internal frame
    }

    /**
     * @return File
     * @throws InstantiationException on error
     * @see com.lowagie.toolbox.AbstractTool#getDestPathPDF()
     */
    protected File getDestPathPDF() throws InstantiationException {
        throw new InstantiationException("There is more than one destfile.");
    }
}

        try {
            if (getValue("srcfile") == null) {
                throw new InstantiationException("You need to choose a sourcefile");
            }
            File src = (File) getValue("srcfile");
            File directory = src.getParentFile();
            String name = src.getName();
            name = name.substring(0, name.lastIndexOf('.'));
            // we create a reader for a certain document
            PdfReader reader = new PdfReader(src.getAbsolutePath());
            // we retrieve the total number of pages
            int n = reader.getNumberOfPages();
            int digits = 1 + (n / 10);
            System.out.println("There are " + n + " pages in the original file.");
            Document document;
            int pagenumber;
            String filename;
            for (int i = 0; i < n; i++) {
                pagenumber = i + 1;
                filename = String.valueOf(pagenumber);
                while (filename.length() < digits) {
                    filename = "0" + filename;
                }
                filename = "_" + filename + ".pdf";
                // step 1: creation of a document-object
                document = new Document(reader.getPageSizeWithRotation(pagenumber));
                // step 2: we create a writer that listens to the document
                PdfWriter writer = PdfWriter.getInstance(document,
                        new FileOutputStream(new File(directory, name + filename)));
                // step 3: we open the document
                document.open();
                PdfContentByte cb = writer.getDirectContent();
                PdfImportedPage page = writer.getImportedPage(reader, pagenumber);
                int rotation = reader.getPageRotation(pagenumber);
                if (rotation == 90 || rotation == 270) {
                    cb.addTemplate(page, 0, -1f, 1f, 0, 0, reader.getPageSizeWithRotation(pagenumber).getHeight());
                } else {
                    cb.addTemplate(page, 1f, 0, 0, 1f, 0, 0);
                }
                // step 5: we close the document
                document.close();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    
<methods>public void <init>() ,public void actionPerformed(java.awt.event.ActionEvent) ,public abstract void execute() ,public ArrayList<com.lowagie.toolbox.arguments.AbstractArgument> getArguments() ,public javax.swing.JInternalFrame getInternalFrame() ,public javax.swing.JMenuBar getMenubar() ,public java.lang.String getUsage() ,public java.lang.Object getValue(java.lang.String) throws java.lang.InstantiationException,public void setArguments(ArrayList<com.lowagie.toolbox.arguments.AbstractArgument>) ,public void setInternalFrame(javax.swing.JInternalFrame) ,public void setMainArguments(java.lang.String[]) ,public void setMenubar(javax.swing.JMenuBar) ,public abstract void valueHasChanged(com.lowagie.toolbox.arguments.AbstractArgument) <variables>public static final int MENU_EXECUTE,public static final int MENU_EXECUTE_PRINT,public static final int MENU_EXECUTE_PRINT_SILENT,public static final int MENU_EXECUTE_SHOW,protected ArrayList<com.lowagie.toolbox.arguments.AbstractArgument> arguments,private java.awt.Desktop awtdesktop,protected javax.swing.JInternalFrame internalFrame,private javax.swing.JMenuBar menubar,protected int menuoptions,public static ArrayList<java.lang.String> versionsarray