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Add row to JTable

 
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thealy
Posted via mailing list.
PostPosted: Tue Feb 24, 2009 8:00 pm    Post subject: Add row to JTable Reply with quote
I'm using NB 6.5 to create a small project that contains a JTable. I
need to add (append) a series of new rows at the bottom of the JTable
based on user input in a TextArea, as triggered by a button push.

The TableModel is created by NB. If I configure the table with, say, 4
rows I am able to change the data, but not add new rows. I've looked
through the tutorials but can't find a solution which fits.

Any suggestions?
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Bayless Kirtley
Posted via mailing list.
PostPosted: Tue Feb 24, 2009 10:40 pm    Post subject: Add row to JTable Reply with quote
You'll have to create your own table model. Probably can just use the
DefaultTableModel which, I believe does have a addRow or nsertRow
method. It's really pretty easy. Refer to the Javadac for specifics.

Bayless

----- Original Message -----
From: "thealy" <address-removed>
To: <address-removed>
Sent: Tuesday, February 24, 2009 2:00 PM
Subject: [nbusers] Add row to JTable


Quote:
I'm using NB 6.5 to create a small project that contains a JTable. I
need to add (append) a series of new rows at the bottom of the JTable
based on user input in a TextArea, as triggered by a button push.

The TableModel is created by NB. If I configure the table with, say, 4
rows I am able to change the data, but not add new rows. I've looked
through the tutorials but can't find a solution which fits.

Any suggestions?
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pointer2null



Joined: 11 Feb 2009
Posts: 13
PostPosted: Wed Feb 25, 2009 8:36 pm    Post subject: Reply with quote
You will need to make your own table model as the one used by default in NB doesn't have the addRow method.

A table model is simple to do:

Code:

   // define new table model class
    class SearchResultsModel extends DefaultTableModel {
        private String[] colNames;
        private Object[][] rowData;
        SearchResultsModel(Object[][] rowData, String[] colNames){
            super(rowData, colNames);
            this.colNames = colNames;
            this.rowData = rowData;
        }

        @Override
        public Class getColumnClass(int columnIndex) {
            return getValueAt(0, columnIndex).getClass();
        }

        @Override
        public String getColumnName(int col) {
            return colNames[col];
        }

        @Override
        public boolean isCellEditable(int rowIndex, int columnIndex) {
            return false; // note my table does not allow editing
            // if yours does you need to change this.
        }

    }




Then when you need to add a line:

Code:

Object[] newRowData = {new Integer(0), "", new Double(0), new Double(0), new Double(0)};
        myNewTableModelInstance.addRow(newRowData);


Obviously your newRowData will contain the right object types for your table.
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