Thread: How to programmatically set combobox width?

Hi,

Newbie in Java testing database access.
Succeeded to load driver, make a connection and reading tablenames.
Want to load retrieved tablenames into a jcombobox and afterwards adjust
combobox width to show even the table with longest name.
Tried this code:

  private void getTables(Connection conn) throws SQLException
  {
    DatabaseMetaData dbmd = conn.getMetaData();
 
    FontMetrics fm = cbxTableNames.getFontMetrics(cbxTableNames.getFont());
 
    int maxw, w;
    maxw = 0;
    String[] types = {"TABLE"};
    ResultSet tables = dbmd.getTables(null, null, null, types);
    while (tables.next()) 
    {
      String tablename = tables.getString("TABLE_NAME");
      w = fm.stringWidth(tablename);
      if (maxw < w)
      {  maxw = w;
      }
      cbxTableNames.addItem(tablename);
    }
    cbxTableNames.setVisible(true);
    lblTableNames.setVisible(true);
    cbxTableNames.setSize(new Dimension(maxw, 20));
  }

Last statement:cbxTableNames.setSize(new Dimension(maxw, 20)); doesn't change the combobox width
but adding a separate jButton and in its' ActionPerformed event executing:
cbxTableNames.setSize(new Dimension(300, 20)) changes the with.

Why and how can I achieve desired effect?

Regards
stab