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    <p>I have implemented a simple <code>TableFilterPanel</code> in the past which has one <code>JTextField</code> per table column and performs regular expression matching when text is present in a given field. I typically lay this out as a list of vertical labels + text fields (i.e. so it's fairly compact).</p> <p>My key class is called <code>ColumnSearcher</code>, which offers the ability to manufacture a <code>RowFilter</code> using the contents of the <code>JTextField</code>:</p> <pre><code>protected class ColumnSearcher { private final int[] columns; private final JTextField textField; public ColumnSearcher(int column, JTextField textField) { this.columns = new int[1]; this.textField = textField; this.columns[0] = column; } public JTextField getTextField() { return textField; } public boolean isEmpty() { String txt = textField.getText(); return txt == null || txt.trim().length() == 0; } /** * @return Filter based on the associated text field's value, or null if the text does not compile to a valid * Pattern, or the text field is empty / contains whitespace. */ public RowFilter&lt;Object, Object&gt; createFilter() { RowFilter&lt;Object, Object&gt; ftr = null; if (!isEmpty()) { try { ftr = new RegexFilter(Pattern.compile(textField.getText(), Pattern.CASE_INSENSITIVE), columns); } catch(PatternSyntaxException ex) { // Do nothing. } } return ftr; } } </code></pre> <p>When I wish to change the filter settings I build an "and" filter from each individual filter:</p> <pre><code>protected RowFilter&lt;Object, Object&gt; createRowFilter() { RowFilter&lt;Object, Object&gt; ret; java.util.List&lt;RowFilter&lt;Object, Object&gt;&gt; filters = new ArrayList&lt;RowFilter&lt;Object, Object&gt;&gt;(columnSearchers.length); for (ColumnSearcher cs : columnSearchers) { RowFilter&lt;Object, Object&gt; filter = cs.createFilter(); if (filter != null) { filters.add(filter); } } if (filters.isEmpty()) { ret = NULL_FILTER; } else { ret = RowFilter.andFilter(filters); } return ret; } </code></pre> <p>Typically I fire a <code>PropertyChangeEvent</code> when I wish to update the filters and have a PropertyChangeListener respond to it and rebuild my aggregate filter. You may then choose to fire the "rowFilter" <code>PropertyChangeEvent</code> if the user types in one of the text fields (e.g. by adding a <code>DocumentListener</code> to each <code>JTextField</code>).</p> <p>Hope that helps.</p>
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