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BuildinEx840 ex840=new BuildinEx840();
        int response=ex840.open();
        System.out.println("ex840 open:"+response);

        byte[] set={'N','A','R','E','S','H','S','H','A','R','M','A',(byte)0x0d,(byte)0x0a};
        try {
            ex840.write(set);
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        try{
        response=ex840.getEndStatus();
        System.out.println("getEndStatus:"+response);
        response=ex840.initCutter();
         List<byte[]>printList = new ArrayList<byte[]>();
         printList.add(set);
        ex840.getConverter().cutPaper(printList, 100);
        ex840.close();
        EscType exc;
        exc = LinePrinterConvertBase.EscType.ESC_P;
        //ex840.getConverter().cutPaper(in, percentage);
        exc=LinePrinterConvertBase.EscType.ESC_SP;
        System.out.println("initCutter:"+response);
        }
        catch(Exception e){
            e.printStackTrace();
        }