关于java 打印程序窗体的问题

Question

我套用以下类，用作打印程序窗体，原在jdk1.5＋fedora7(os)中正常，现换为jdk1.6＋fedora8(os)中无法打印，请大家看看是什么问题！
http://www.cnblogs.com/ctfzh/archive/2007/07/09/811319.html
/*打印指定的窗体及其包含的组件*/
                        private void printFrameAction()
                        {
                        Toolkit kit = Toolkit.getDefaultToolkit(); //获取工具箱
                        Properties props = new Properties();
                        props.put("awt.print.printer", "durango");//设置打印属性
                        props.put("awt.print.numCopies", "2");
                        if(kit != null)
                        {
                        //获取工具箱自带的打印对象
                        PrintJob printJob = kit.getPrintJob(this, "Print Frame", props);
                        if(printJob != null)
                        {
                        Graphics pg = printJob.getGraphics();//获取打印对象的图形环境
                        if(pg != null)
                        {
                        try
                        {
                        this.printAll(pg);//打印该窗体及其所有的组件
                        }
                        finally
                        {
                        pg.dispose();//注销图形环境
                        }
                        }
                        printJob.end();//结束打印作业
                        }
                        }
                        }

Answer 1

我将以上举例修改为以下，
public class PrintClass {
    
    /** Creates a new instance of PrintClass */
    public PrintClass(JFrame jframe) {
        Toolkit kit = Toolkit.getDefaultToolkit(); //获取工具箱
    Properties props = new Properties();
    props.put("awt.print.printer", "durango");//设置打印属性
    props.put("awt.print.numCopies", "1");
    
            if(kit != null)
            {
                //获取工具箱自带的打印对象 
       
        PrintJob printJob = kit.getPrintJob( jframe, "Print Frame", props); 
                if(printJob != null)
                {
                        Graphics pg = printJob.getGraphics();//获取打印对象的图形环境
                    if(pg != null)
                    {
                                                 
                                 try
                                 {
                                           
                              jframe.print(pg);//打印该窗体及其所有的组件
                        }
                        finally
                        {
                                pg.dispose();//注销图形环境
                        }
                    }
                    printJob.end();//结束打印作业
                }
            }
    jframe.removeAll();
    jframe.dispose();
        
    }
    
}

Answer 2

换os和jdk后，在netbeans中编译正常，但执行中以面这一条报错
  PrintJob   printJob   =   kit.getPrintJob(   jframe,   "Print   Frame",   props);