salut j'aimerai filtrer un tableau

Salut,

Si tu parles de filtrer une JTable, il faut utiliser un RowFilter, via un TableRowSorter.

Exemple :
Code:
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public class JTableFilterExample {
 
	public static void main(String[] args) throws IOException {
 
		String[] columns = { "Nom", "Nombre" };
		Object[][] data = { { "Machin", 10 }, { "Truc", 20 }, { "Bidule", 30 } };
 
		JFrame frame = new JFrame("Démo");
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 
		JPanel filterpanel = new JPanel(new GridBagLayout());
		JTextField filterField = new JTextField();
		filterpanel.add(new JLabel("Filtre : "));
 
 
 
 
		filterpanel.add(filterField, 
				new GridBagConstraints(GridBagConstraints.RELATIVE, GridBagConstraints.RELATIVE, 
						1, 1, 1d, 0d,
						GridBagConstraints.CENTER, 
						GridBagConstraints.HORIZONTAL, 
						new Insets(0,0,0,0),
						0, 0)
				);
 
		JPanel panel = new JPanel(new BorderLayout());
		JTable table = new JTable(data, columns);
 
		panel.add(table.getTableHeader(), BorderLayout.NORTH);
		panel.add(new JScrollPane(table));
 
		frame.add(filterpanel,BorderLayout.NORTH);
		frame.add(panel);
 
 
		TableRowSorter<TableModel> rowSorter = new TableRowSorter<>(table.getModel());
		table.setRowSorter(rowSorter);
 
		filterField.getDocument().addDocumentListener(new DocumentListener() {
 
			@Override
			public void removeUpdate(DocumentEvent e) {
				update();
			}
 
			@Override
			public void insertUpdate(DocumentEvent e) {
				update();
			}
 
			@Override
			public void changedUpdate(DocumentEvent e) {
				update();
			}
 
			private void update() {
				String filterValue = filterField.getText().trim();
				if (filterValue.isEmpty()) {
					rowSorter.setRowFilter(null);
				} else {
					RowFilter<Object, Object> filter = new RowFilter<Object, Object>() {
						public boolean include(RowFilter.Entry<? extends Object, ? extends Object> entry) {
 
							String name = (String) entry.getValue(0); // colonne nom
							String value = String.valueOf(entry.getValue(1)); // colonne nombre
 
							return startsWithIgnoreCase(name, filterValue)
									|| String.valueOf(value).startsWith(filterValue);
 
						}
 
						private boolean startsWithIgnoreCase(String string, String prefix) {
							return string.toLowerCase().startsWith(prefix.toLowerCase());
						}
					};
					rowSorter.setRowFilter(filter);
				}
 
			}
 
		});
 
		frame.setSize(600, 400);
		frame.setLocationRelativeTo(null);
		frame.setVisible(true);
 
	}
 
}