button to filter JTable for checkbox is selected

Question

I have a JTable fairly similar to this one.

http://docs.oracle.com/javase/tutorial/uiswing/components/table.html#sorting

Answer 1

Your RowFilter is too simplistic, and instead you need to give it more heft, more meat. The RowFilter API actually has a small bit of very useful example code that could help you. For example, I used that code to help my create a very simplistic but workable RowFilter:

import java.awt.BorderLayout;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;

import javax.swing.*;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableRowSorter;

public class Foo {
   public static void main(String[] args) {
      String[] petStrings = { "Bird", "Cat", "Dog", "Rabbit", "Pig" };
      JComboBox petCombo = new JComboBox<>(petStrings);
      String[] columnNames = {"Name", "Animal", "Male", "Delete"};
      Object[][] data = {
          {"Tweetie", petStrings[0], false, null},
          {"Sylvester", petStrings[1], true, null},
          {"Lassie", petStrings[2], false, null},
          {"Peter", petStrings[3], true, null},
          {"Arnold", petStrings[4], true, null}
      };

      final MyTableModel model = new MyTableModel(data, columnNames);
      final JTable table = new JTable(model);
      table.getColumnModel().getColumn(1).setCellEditor(new DefaultCellEditor(petCombo));


      final TableRowSorter sorter = new TableRowSorter(model);
      final RowFilter maleSexFilter = new RowFilter() {
         public boolean include(Entry entry) {
            MyTableModel personModel = entry.getModel();
            boolean maleSex = ((Boolean) personModel.getValueAt(entry.getIdentifier(), 2)).booleanValue();
           return maleSex;
          }
        };

      sorter.setRowFilter(null);
      table.setRowSorter(sorter);

      JToggleButton showMalesButton = new JToggleButton("Show Males");
      showMalesButton.addItemListener(new ItemListener() {

         @Override
         public void itemStateChanged(ItemEvent iEvt) {
            if (iEvt.getStateChange() == ItemEvent.SELECTED) {
               System.out.println("selected!");
               sorter.setRowFilter(maleSexFilter);
            } else {
               sorter.setRowFilter(null);
            }
         }
      });

      JPanel bottomPanel = new JPanel();
      bottomPanel.add(showMalesButton);

      JPanel panel = new JPanel(new BorderLayout());
      panel.add(new JScrollPane(table), BorderLayout.CENTER);
      panel.add(bottomPanel, BorderLayout.PAGE_END);

     JOptionPane.showMessageDialog(null, panel);
   }
}

@SuppressWarnings("serial")
class MyTableModel extends DefaultTableModel {
   public MyTableModel(Object[][] data, String[] columnNames) {
      super(data, columnNames);
   }

   @Override
   public Class getColumnClass(int columnIndex) {
      if (columnIndex == 2) {
         return Boolean.class;
      }
      return super.getColumnClass(columnIndex);
   }
}

The filter code is:

  final RowFilter maleSexFilter = new RowFilter() {
     public boolean include(Entry entry) {
        MyTableModel personModel = entry.getModel();
        boolean maleSex = ((Boolean) personModel.getValueAt(entry.getIdentifier(), 2)).booleanValue();
       return maleSex;
      }
    };

where all I do is get the boolean value held by the 2nd column, row determined by entry.getIdentifier(), and return that value. If true, then it is selected.