Problem removing rows from JTable
Hello,
I'm having an issue with a JTable that I'm using. At one point in my application, I want to remove all the rows from the table and regenerate them (from a database). When I try to remove the rows and do nothing else, they remain in the table. The rows are being removed from the model, as I have verified this in code, but the display does not refresh at all.
I am using custom renderers to change the background color of a cell based on its value, and I disabled them to see if that was the problem, but alas, it is not.
Any suggestions or ideas why this may be occurring?
I am using model.setRowCount(0); to clear the model, however the display never refreshes. Then you are doing something wrong because its that simple. Only a single line of code is required.
Perhaps I should have included this in my original post.Actually, you should have included demo code in your original post. That way we don't have to guess what you are doing.
If you need further help then you need to create a [url http://homepage1.nifty.com/algafield/sscce.html]Short, Self Contained, Compilable and Executable, Example Program (SSCCE) that demonstrates the incorrect behaviour, because I can't guess exactly what you are doing based on the information provided.
And don't forget to use the [url http://forum.java.sun.com/help.jspa?sec=formatting]Code Formatting Tags so the code retains its original formatting.
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import java.awt.*;
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import java.awt.event.*;
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import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.table.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.UIManager;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableCellEditor;
import javax.swing.AbstractCellEditor;
import javax.swing.table.DefaultTableModel;
public class tester4 extends JFrame
protected final int BUTTON_COL = 2;
private TableCellRenderer defaultRenderer;
private TableCellEditor defaultEditor;
private JTable workingTable;
private String[] transactionCols = {"Qty", "Product", "Cancel"};
private Object[][] data = {{5, "prod1", "Cancel"},
{6, "prod2", "Cancel"},
{7, "prod3", "Cancel"}};
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workingTable = new JTable(tableModel);
workingTable.setName("Working Table");
defaultRenderer = workingTable.getDefaultRenderer(JButton.class);
defaultEditor = workingTable.getDefaultEditor(Object.class);
StatusTableRenderer testRenderer = new StatusTableRenderer(defaultRenderer, defaultEditor, workingTable, tableModel);
workingTable.setDefaultRenderer(Object.class, testRenderer);
workingTable.setDefaultEditor(Object.class, testRenderer);
JScrollPane scrollPane = new JScrollPane( workingTable );
getContentPane().add( scrollPane );
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frame.pack();
frame.setVisible(true);
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TableCellEditor,
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private TableCellRenderer defaultRenderer;
private TableCellEditor defaultEditor;
private JButton cancelButton;
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private String text;
private int buttonColumn;
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cancelButton.setForeground(table.getSelectionForeground());
cancelButton.setBackground(table.getSelectionBackground());
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cancelButton.setForeground(table.getForeground());
cancelButton.setBackground(UIManager.getColor("Button.background"));
cancelButton.setText( (value == null) ? "" : value.toString() );
return cancelButton;
return defaultRenderer.getTableCellRendererComponent(
table, value, isSelected, hasFocus, row, column);
public Component getTableCellEditorComponent(JTable table, Object value,
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editButton.setText(text);
selectedRow = row;
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return text;
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fireEditingStopped();
// This works
tableModel.removeRow(selectedRow);
// This does not work
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Message was edited by:
deadseasquirrelsIt gives me a run-time error Well then your question should be "why do I get this run-time error" and then you would quote the error. Be more descriptive. "It doesn't work" is not descriptive.
table.getModel().removeRow(selectedRow);I don't use JDK1.5 either. But if you are saying that the above line compiles cleanly with JDK1.5 (because of the auto-boxing feature, or whatever its called), then I see no reason why the code wouldn't work since it recognizes the class as a DefaultTableModel.
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