package print;import java.awt.*;import java.awt.print.*;public class StockReturnOrderPrintable implements Printable {  public StockReturnOrderPrintable() {  }  public int print(Graphics g, PageFormat pf, int pageIndex)      throws PrinterException {    //創建打印面板    StockReturnOrderPrintPane stockReturnOrderPrintPane = new StockReturnOrderPrintPane();    //繪畫打印面板的文字，并且輸送至打印機    stockReturnOrderPrintPane.drawPages((Graphics2D) g );    return Printable.PAGE_EXISTS;  }}