JTable - Help with column names and rowselection

Question

Hi,
Is there anyone that can help me. I have successfully been able to load a JTable from an MS access database using vectors. I am now trying to find out how to hardcode the column names into the JTable as a string.
Can anyone please also show me some code on how to be able update a value in a cell (from ''N'' to ''Y'') by double clicking on that row.
How can I make all the other columns non-editable.
Here is my code:
     private JTable getJTable() {
          Vector columnNames = new Vector();
Vector data = new Vector();
try
// Connect to the Database
String driver = "sun.jdbc.odbc.JdbcOdbcDriver";
// String url = "jdbc:odbc:Teenergy"; // if using ODBC Data Source name
String url = "jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)};DBQ=C:/Documents " +
          "and Settings/Administrator/My Documents/mdbTEST.mdb";
String userid = "";
String password = "";
Class.forName( driver );
Connection connection = DriverManager.getConnection( url, userid, password );
// Read data from a table
String sql = "select * from PurchaseOrderView";
Statement stmt = connection.createStatement();
ResultSet rs = stmt.executeQuery( sql );
ResultSetMetaData md = rs.getMetaData();
int columns = md.getColumnCount();
// Get column names
for (int i = 1; i <= columns; i++)
columnNames.addElement( md.getColumnName(i) );
// Get row data
while (rs.next())
Vector row = new Vector(columns);
for (int i = 1; i <= columns; i++)
row.addElement( rs.getObject(i) );
data.addElement( row );
rs.close();
stmt.close();
catch(Exception e)
System.out.println( e );
          if (jTable == null) {
               jTable = new JTable(data, columnNames);
               jTable.setAutoCreateColumnsFromModel(false);
               jTable.setAutoResizeMode(javax.swing.JTable.AUTO_RESIZE_NEXT_COLUMN);
               jTable.setShowHorizontalLines(false);
               jTable.setGridColor(java.awt.SystemColor.control);
               jTable.setRowSelectionAllowed(true);
               jTable.setSelectionMode(javax.swing.ListSelectionModel.SINGLE_SELECTION);
               jTable.setShowGrid(true);     
          return jTable;
     }

Answer 1

this method has a default behavior to supply exactly what you're seeing: column names consisting of the capitalized letters, "A", "B", "C".Thanks Pete, had seen that but never really thought about it... about 10 days ago somebody needed to obtain Excel column names, I'd offered a rigorous solution and now see it would have been shorter and simpler (if a little heavier) to extend DefaultTableModel and provide the two additional methods needed (getOffsetCol and getColIndex).
Not much of a difference in LOC but certainly more elegant ;-)
Darryl