Working with JTables

With JTables you can display tables of data, allowing the user to edit the data. Fallow this example if you want to learn how to fill a specific position in a JTable.

• Create a new JDialog Form.
• Drag and drop the JTable swing component into the JDialog Form. You should have something like this,

• Next, change from Design View to Source View and paste the following source-code inside the constructor (after InitComponents),

jTable1.setValueAt("0,0 position", 0, 0);
jTable1.setValueAt("1,0 position", 1, 0);
jTable1.setValueAt("2,0 position", 2, 0);
jTable1.setValueAt("3,0 position", 3, 0);

jTable1.setValueAt("1,2 position", 1, 2);
jTable1.setValueAt("1,3 position", 1, 3);

• Each line fills the first position of the table. Very simple :) Now, let's complicate a little more by changing the header font to bold. First, let's find out JTable's font by doing this,

Font font = jTable1.getTableHeader().getFont();

• And now, change the font to bold,

jTable1.getTableHeader().setFont(font.deriveFont(Font.BOLD));

• Resizing the column header you ask ... no problem, simply do this,

TableColumn column = null;
column = jTable1.getColumnModel().getColumn(1);
column.setPreferredWidth(140);

• Run your file (Shift+F6), and you should have something like this,

Want to know more ? Read How to Use Tables.

Need help with something related ? Ask away :)