将java文本更改为pdf然后打印它

Question

我正在使用android studio制作一个java桌面应用程序（bcz还没有其他工具可用）。在我的应用程序中，我必须添加一个打印按钮，从jtextarea获取文本将其转换为PDF格式然后打印它。我不知道该怎么做。我搜索过互联网，但没有找到任何有用的材料。我使用了printerjob，但它将整个组件打印为图像。如下：

 public class Printer implements Printable {
    final Component comp;

    public Printer(Component comp){
        this.comp = comp;
    }

    @Override
    public int print(Graphics graphics, PageFormat format, int page_index) throws PrinterException {
        if (page_index > 0) {
            return Printable.NO_SUCH_PAGE;
        }

        // get the bounds of the component
        Dimension dim = comp.getSize();
        double cHeight = dim.getHeight();
        double cWidth = dim.getWidth();

        // get the bounds of the printable area
        double pHeight = format.getImageableHeight();
        double pWidth = format.getImageableWidth();

        double pXStart = format.getImageableX();
        double pYStart = format.getImageableY();

        double xRatio = pWidth / cWidth;
        double yRatio = pHeight / cHeight;


        Graphics2D g2 = (Graphics2D) graphics;
        g2.translate(pXStart, pYStart);
        //g2.scale(xRatio, yRatio);
        comp.print(g2);

        return Printable.PAGE_EXISTS;
    }
}

      public void printComponent() throws PrinterException {

        PrinterJob pjob = PrinterJob.getPrinterJob();
        PageFormat preformat = pjob.defaultPage();
        preformat.setOrientation(PageFormat.PORTRAIT);
        PageFormat postformat = pjob.pageDialog(preformat);
//If user does not hit cancel then print.
        if (preformat != postformat) {
            //Set print component
            pjob.setPrintable(new Printer(bluetoothText), postformat);
            if (pjob.printDialog()) {
                pjob.print();
            }
        }

如果文本不止一个页面，则不打印该文本。任何帮助都会非常明显。谢谢。