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POHow keep ResultSet open in java?
 

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  1. POHow keep ResultSet open in java?
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    <p>I'm passing values for a java file which creates a JTable. </p> <p><code></p> <pre><code>ResultSet res = np.InvestmentByInvestType(IType); String tablename = "Investment By Invest Type"; int customAmt = np.showCustomizeInvestAmount1(IType); CommonTable ct = new CommonTable(); ct.CommonSearchTable(res, customAmt,tablename); </code></pre> <p></code></p> <p>I created a button in CommonSearchTable to export the JTable data using the ResultSet. But it showing error <b>"Operation not allowed after ResultSet closed"</b>. A method in CommonSearchTable.java is as below:</p> <p><code></p> <pre><code>public void CommonSearchTable( final ResultSet res, int totally, final String tablename) throws SQLException { JButton exportTable= new JButton ("Export"); ResultSetMetaData metaData = res.getMetaData(); // names of columns Vector&lt;String&gt; columnNames = new Vector&lt;String&gt;(); int columnCount = metaData.getColumnCount(); for (int column = 1; column &lt;= columnCount; column++) { columnNames.add(metaData.getColumnName(column)); } // data of the table Vector&lt;Vector&lt;String&gt;&gt; data = new Vector&lt;Vector&lt;String&gt;&gt;(); while (res.next()) { Vector&lt;String&gt; vector = new Vector&lt;String&gt;(); for (int columnIndex = 1; columnIndex &lt;= columnCount; columnIndex++) { vector.add(res.getString(columnIndex)); } data.add(vector); } model1 = new DefaultTableModel(data, columnNames); JTable table = new JTable(model1); int rows = table.getRowCount(); Sorter = new TableRowSorter&lt;DefaultTableModel&gt; (model1); table.setRowSorter(Sorter); showSearchPages(30, 1); table.setModel(model1); String showTotal = "Total Amount : Rs."+totally+"/-"; JPanel footer = new JPanel(); JLabel show = new JLabel(showTotal); box1.setBounds(10,30,800,30); show.setBounds(10, 60, 100, 30); show.setFont(new Font("Tahoma",Font.BOLD,16)); footer.add(box1); footer.add(show); footer.setPreferredSize(new Dimension(800,100)); JPanel holdingPanel = new JPanel(null); JScrollPane sp = new JScrollPane(table); JButton print = new JButton ("Print"); print.setBounds(10,10,100,30); exportTable.setBounds(120,10,100,30); sp.setBounds(10,50,780,580); holdingPanel.add(print); holdingPanel.add(exportTable); holdingPanel.add(sp); JFrame f = new JFrame("Search Results"); f.getContentPane().add(holdingPanel,BorderLayout.CENTER); f.getContentPane().add(sp.getVerticalScrollBar(),BorderLayout.EAST); f.getContentPane().add(footer,BorderLayout.SOUTH); f.setPreferredSize(new Dimension(850,680)); f.pack(); f.setLocationRelativeTo(null); f.dispose(); f.setResizable(false); f.setIconImage(img.getImage()); f.setVisible(true); exportTable.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent aev) { try { ExportFile ef = new ExportFile(); ef.WriteFile(res, tablename); } catch (SQLException | IOException ex) { Logger.getLogger(CommonTable.class.getName()).log(Level.SEVERE, null, ex); } } }); print.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { PrinterJob printJob = PrinterJob.getPrinterJob(); if (printJob.printDialog()) try { printJob.print(); } catch(PrinterException pe) { } } }); } </code></pre> <p></code></p> <p>Please show me the way.</p>
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    1. USDineshgaru
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    1. This table or related slice is empty.
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    1. PO
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    2. PO
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    1. COIf you keep the ResultSet open, you keep your connection to the database open. Copy the ResultSet into some other data structure, like a DefaultTableModel.
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      1. POHow keep ResultSet open in java?
      1. USGilbert Le Blanc
    2. COWhy is there _soo_ much going on in that one method?
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      1. POHow keep ResultSet open in java?
      1. USPaul Samsotha
    3. COI would like to open ResultSet in this method only, so that i can show 'print' and 'Export' buttons above the JTable and to make export work.
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      1. USDineshgaru
 

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