Filter JTable by text in a JTextField in Java

 /*from w  ww.  j  a v a 2s. c o m*/

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.RowFilter;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableModel;
import javax.swing.table.TableRowSorter;

public class Main {
  public static void main(String args[]) {
    JFrame frame = new JFrame("Regexing JTable");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Object rows[][] = { { "A", "About", 44.36 }, { "B", "Boy", 44.84 }, { "C", "Cat", 463.63 },
        { "D", "Day", 27.14 }, { "E", "Eat", 44.57 }, { "F", "Fail", 23.15 },
        { "G", "Good", 4.40 }, { "H", "Hot", 24.96 }, { "I", "Ivey", 5.45 },
        { "J", "Jack", 49.54 }, { "K", "Kids", 280.00 } };
    String columns[] = { "Symbol", "Name", "Price" };
    TableModel model = new DefaultTableModel(rows, columns) {
      public Class getColumnClass(int column) {
        Class returnValue;
        if ((column >= 0) && (column < getColumnCount())) {
          returnValue = getValueAt(0, column).getClass();
        } else {
          returnValue = Object.class;
        }
        return returnValue;
      }
    };

    final JTable table = new JTable(model);
    final TableRowSorter<TableModel> sorter = new TableRowSorter<TableModel>(model);
    table.setRowSorter(sorter);
    JScrollPane pane = new JScrollPane(table);
    frame.add(pane, BorderLayout.CENTER);

    JPanel panel = new JPanel(new BorderLayout());
    JLabel label = new JLabel("Filter");
    panel.add(label, BorderLayout.WEST);
    final JTextField filterText = new JTextField("A");
    panel.add(filterText, BorderLayout.CENTER);
    frame.add(panel, BorderLayout.NORTH);
    JButton button = new JButton("Filter");
    button.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        String text = filterText.getText();
        if (text.length() == 0) {
          sorter.setRowFilter(null);
        } else {
          sorter.setRowFilter(RowFilter.regexFilter(text));
        }
      }
    });
    frame.add(button, BorderLayout.SOUTH);
    frame.setSize(300, 250);
    frame.setVisible(true);
  }

}