使用插入的数据库数据创建弹出表

Question

ok this is a theoretical question. say I have a database connection set up and I run the query

"select * from securitysystem.employee"

and I wanted to populate a table that would autofit the data returned from the query. How would I do this?

Answer 1

Steps:

1. Loop through results and convert the results to a Collection of objects (Employee or however else you are modeling them.)
2. Hand the Collection off to your GUI
3. Have the GUI create a new JDialog that contains a JTable.
4. When building the table model for the data it either needs to handle your Collection of objects or you need to convert it to a data format it can handle (example Object[][] for a DefaultTableModel ).
5. Set the dialog to visible.

Answer 2

You need to get that data back as a double array somehow (ideally you want a table model of some sort, but for quick and dirty a double array is fine).

• Add the JTable to a JScrollPane .
• Add the JScrollPane to your Panel or Frame.
• Give it maximum stretch (ie. central panel in BroderLayout for example)
• Set the table.setModel(new DefaultTableModel(myDoubleArray))
• Call table.updateUI()

That should do it.