public frmPostsView(java.awt.Frame parent, boolean modal) {

    super(parent, modal);
    initComponents();

    try{
        String strHost = "";
        String strUsername = "";
        String strPassword = "";

        con = DriverManager.getConnection(strHost, strUsername, strPassword);
        stmt = con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE);
    }
    catch(SQLException err){
        JOptionPane.showMessageDialog(this, err.getMessage());
    }

    loadTable();

    ListSelectionModel selectionModel = dataGridPosts.getSelectionModel();
    selectionModel.addListSelectionListener(new ListSelectionListener(){

        @Override
        public void valueChanged(ListSelectionEvent e){
            if(!selectionModel.isSelectionEmpty()){
                int nSelectedRow = selectionModel.getMinSelectionIndex();
                try{
                    rs.absolute(nSelectedRow + 1);
                    int nId = rs.getInt("nId");
                }
                catch(SQLException err){
                    JOptionPane.showMessageDialog(null, err.getMessage());
                }
            }
        }
    });
}