public Object[][] executeQuery(String query) throws SQLException {
        File Tables=new File("C:\\eclipse-workspace\\lab3");
        File[] files= Tables.listFiles();
        query=remove(query);
        String temp=query.toLowerCase();
        String[] split=temp.split("( )|(\\*)|(\\,)");
        String[] noC = null;
        int c=0,m=0,n = 0,condition2=0,flag=0;
        Object[][] table = null;
        if (!query.contains("*")) {

             int j = 0, s = 0;

             for (int i=0;i<split.length;i++)
             {
                 if (split[i].contentEquals(""))
                 {
                     s++;
                 }
                 if (split[i].contains("from"))
                 {
                     j=i+1;
                     n= i-1-s;
                     break;
                 }
             }

             condition2=1;

             noC= new  String[n];

             for (int i=0;i<n;i++)
             {
                 int k=i+1;
                 if (!split[k].contentEquals(""))
                 {
                     noC[i]=split[k];
                 }else
                 {
                     noC[i]=split[k+1];
                 }

             }
             }
        int e=0;
        for (int i=0;i<split.length;i++)
        {

            if (split[i].contains("from"))
            {
                e=i+1;
            }

        }
        for (File f : files)
        {
            String name = f.getName().toLowerCase();
            if(name.contentEquals(split[e]+".xml"))
            {
                DocumentBuilderFactory Factory = DocumentBuilderFactory.newInstance();

                try {
                    DocumentBuilder Builder = Factory.newDocumentBuilder();
                    Document Doc =Builder.parse(f);
                    NodeList Rows = Doc.getElementsByTagName("Row");
                    for (int i=0;i<Rows.getLength();i++)
                    {
                        c=0;
                        Node R =Rows.item(i);
                        if (R.getNodeType()==Node.ELEMENT_NODE)
                        {
                            Element Row = (Element) R;
                            NodeList Columns = Row.getChildNodes();
                            m =Rows.getLength();
                           if (condition2==0)
                            n =(int) (Columns.getLength()-Math.ceil((double)Columns.getLength()/(double)2));
                           if (flag==0) {
                            table=new Object[m][n];
                            flag=1;
                           }
                            for (int j=0;j<Columns.getLength();j++)
                            {
                                Node C =Columns.item(j);
                                if (C.getNodeType()==Node.ELEMENT_NODE)
                                {
                                    Element Column = (Element) C;


                                    if (condition2==1)
                                    {

                                        if (find (Column.getTagName(),noC))
                                        {
                                            table[i][c] = Column.getTextContent();
                                            c++;
                                        }
                                    }else {
                                           table[i][c] = Column.getTextContent();
                                           c++;}

                                }
                            }
                        }
                    }


                } catch (ParserConfigurationException e1) {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
                } catch (SAXException e1) {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
                } catch (IOException e1) {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
                }
                break;
            }

        }

        return table ;
    }