JTable is empty after adding Components

I have problem with JTable, I am trying to put in each row JComboBoxes and JTextFields but when I load app, my table is empty. Functions getCmb* and getTxt* return JComboBox and JTextField and that works fine, I checked.

        JTable tblCommands;
        String[] columnTitles=new String[]{"Command","Offset","Type","Value","Units","Value Type","R/W"};
        Object[][] data=new Object[20][7];
        int row=0;
        for(MessageCSVView message:messageContainer.getRows()){
            data[row][0]=message.getCmbName();//this works 
            data[row][1]=message.getCmbOffset();//this works 
            data[row][2]=message.getTxtType();//this works 
            data[row][3]=message.getTxtValue();//this works 
            data[row][4]=message.getTxtUnit();//this works 

            data[row][5]=message开发者_StackOverflow.getTxtValueType();//this works 
            data[row][6]=message.getCmbRW();//this works 
            row++;
        }
        tblCommands=new JTable(data,columnTitles);

Can anybody tell me what I did wrong ?

You misunderstand the way input works with JTable.

You'll need to create TableCellEditor implementations and add them to each column of your table.

Take a look at Swing tutorial on JTable for further information.

Example Snippet

public class JComboBoxCellEditor extends DefaultCellEditor {    
    JComboBox comboBox;    
    public JComboBoxCellEditor() {
        super(new JComboBox());  
        comboBox = (JComboBox) getComponent();
    }
}

Then include it like below,

TableColumn column = myTable.getColumnModel().getColumn(0);
column.setCellEditor(new JComboBoxCellEditor());

Further reading:

Here is your best bet, Swing tutorial for JTable.