adding stuff to JTable without constructor

[Rotkiv]

I'm trying to use a JTable to display a list of files and some information about them. actually at this point the fact that they're files doesn't matter that much.
I'm trying to display information via a JTable. however the only way i know how to get data to the JTable is through the constructor. So how would i append rows to or preferably completely replace the information in a JTable using a change listener?

here's where i've been stumped. I have many other classes which i hope are not relevant to this issue, unless my code should work... which i doubt. the JARmanager is another class in my program which manages a list of files and the getTable method returns a vector of object[]'s which contain a single string. the system.out line is for testing and the vector is being populated correctly.

import java.awt.BorderLayout;
import javax.swing.table.DefaultTableModel;
import javax.swing.event.*; //ChangeEvent, ChangeListener,
import javax.swing.*; //JPanel, JScrollPane, JTable, DefaultListSelectionModel,
import java.util.Vector;

public class TableView extends JPanel implements ChangeListener {
	Vector<String> columnNames = new Vector<String>();
	Vector data;
	JTable table;
	JScrollPane scroll;
	JARmanager jman;
	
	public TableView(JARmanager man) {
		columnNames.add("Name");
		columnNames.add("Type");
		data = man.getTable();
		jman = man;
		
		table  = new JTable(data, columnNames);
		table.setFillsViewportHeight(true);
		table.setSelectionMode(DefaultListSelectionModel.SINGLE_SELECTION);
		table.setColumnSelectionAllowed(false);
		scroll = new JScrollPane(table);
		this.setLayout(new BorderLayout());
		this.add(scroll, BorderLayout.CENTER);
	}
	
	public void stateChanged(ChangeEvent e) {
		data = jman.getTable();
		System.out.println(data);
	}
}

does anyone know what to do?
does anyone understand my question?

[Belisarius]

I'm not really familiar with Swing - been a while since I did anything with it. Sun has a pretty good guide to JTables though - see here. In short, I think you want "fire" methods - fireTableCellUpdated, fireTableRowsUpdated, fireTableDataChanged, fireTableRowsInserted, fireTableRowsDeleted, and fireTableStructureChanged.

[Rotkiv]

thanks, I'd been using that page regularly to learn how to use jtables but i don't know why i didn't see this part: How to Use Tables (The Java™ Tutorials > Creating a GUI with JFC/Swing > Using Swing Components)
i looked all through that page yesterday but i don't know what the hell i was looking for that i didn't see the big orange letters that say listening and changes.

[Rotkiv]

well i've gotten it to add rows. It's pretty straightforward if you understand the MVC concept. I was trying to use JTable as just another component along with my own model. whatever, like i know what i'm talking about . anyways, here's the working code. it adds a whole Vector to the table.

public class TableView extends JPanel implements ChangeListener {
	DefaultTableModel model = new DefaultTableModel();
	JTable table;
	JScrollPane scroll;
	JARmanager jman;
	
	public TableView(JARmanager man) {
		model.addColumn("Name");
		model.addColumn("Type");
		jman = man;
		
		table  = new JTable(model);
		table.setFillsViewportHeight(true);
		table.setSelectionMode(DefaultListSelectionModel.SINGLE_SELECTION);
		table.setColumnSelectionAllowed(false);
		scroll = new JScrollPane(table);
		this.setLayout(new BorderLayout());
		this.add(scroll, BorderLayout.CENTER);
	}
	
	public void stateChanged(ChangeEvent e) {
		Vector<Object[]> data = jman.getTable();
		for(Object[] o: data)
			model.insertRow(model.getRowCount(), o);
	}
}

[Belisarius]

Cool, thanks for sharing your solution. Glad everything worked out for you.