Adding JButton in a JTable

Question

hi
i know this has been discussed quite a number of times before, but i still couldn't figure it out..
basically i just want to add a button to the 5th column of every row which has data in it.
this is how i create my table (partially)
     private JTable clientTable;
     private DefaultTableModel clientTableModel;
private JScrollPane scrollTable;
clientTableModel = new DefaultTableModel(columnNames,100);
          clientTable = new JTable(clientTableModel);
          TableColumn tblColumn1 = clientTable.getColumn("Request ID");
          tblColumn1.setPreferredWidth(70);
          tblColumn1 = clientTable.getColumn("Given Name");
          tblColumn1.setPreferredWidth(300);
          tblColumn1 = clientTable.getColumn("Address");
          tblColumn1.setPreferredWidth(350);
          tblColumn1 = clientTable.getColumn("Card Serial");
          tblColumn1.setPreferredWidth(100);
          tblColumn1 = clientTable.getColumn("Print Count");
          tblColumn1.setPreferredWidth(70);
          tblColumn1 = clientTable.getColumn("Print?");
          tblColumn1.setPreferredWidth(40);
          clientTableModel.insertRow(0,data);
          //clientTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
          scrollTable = new JScrollPane(clientTable);and i call this function void listInfoInTable(){
          JButton cmdPrint[];
          Vector columnNames = new Vector();
          Object[] data={"","","","","",""};
          Statement stmt=null;
          ResultSet rs=null;
          PreparedStatement ps;
          String query=null;
          String retrieve=null;
          int i,j=0;
          TableColumnModel modelCol = clientTable.getColumnModel();
          try{
               con = DriverManager.getConnection(url);
               JOptionPane.showMessageDialog(null,"Please wait while the program retrieves data.");
               query="select seqNo, givenName, address1, address2, address3, address4, cardSerNr, PIN1, PrintFlag from PendPINMail where seqNo<250;";
             ps = con.prepareStatement(query);
             rs=ps.executeQuery();
             while (rs.next()){
                  data[0]= rs.getString("seqNo");
                  data[1]= rs.getString("givenName");
                  data[2]= rs.getString("address1");
                  data[3]= rs.getString("cardSerNr");
                  data[4]= rs.getString("PrintFlag");
//                  modelCol.getColumn(5).setCellRenderer();
                  clientTableModel.insertRow(j,data);
                  j++;
          }catch (SQLException ex){
               JOptionPane.showMessageDialog(null,"Database error: " + ex.getMessage());
     } to display data from database inside the table.
How do I add JButton to the 5th column of each row? This documentation here http://java.sun.com/docs/books/tutorial/uiswing/components/table.html#width says that i need to implement TableCellEditor to put JButton in the table. How do i really do it? I want the button to call another function which prints the data from the row (but this is another story).
Any help is greatly appreciated. Thanks

Answer 1

you would need CellRenderer i think that it is in
javax.swing.table.*;
see if you can get started with that.
Davidthanks, i'll try and have a look at it
Yes, that's definitely what you need to start with,
but you also need a CellEditor to return the
button as well, otherwise the button will not be
clickable (the renderer just paints the cell for
display, it doesn't allow you to interact with it).
You could maintain a list of components for rendering
each cell of the table so that your
CellRenderer and CellEditor always
return the same object (i.e. a JButton for any
given cell).
CB.thanks for the info.. could you point me to some examples? is sounds quite complicated for me....
thanks again