Filter a JTable row with input in a text field

In an enterprise application when there is huge amount data in a table
users feel comfortable if you provide them a option for filtering the
table. Here I show you an example of how to filter a JTable row with
input in a JTextField.

Declare a JTable and your own table model

private MyTableModel tableModel;
private javax.swing.JTable jtblSampleTable;

Now declare a table row sorter for that table model

private TableRowSorter sorter ;
//

Initialize all the above three declared variables

jtblSampleTable  = new javax.swing.JTable();
tableModel  = new MyTableModel();
sorter = new TableRowSorter(tableModel);
//

Bind the model with the table

jtblSampleTable.setModel(tableModel);

Set the sorter as the row sorter for the table

jtblSampleTable.setRowSorter(sorter);

Now declare a JTextField

jtfSearch = new javax.swing.JTextField();

Add a document listener for the search text field.

jtfSearch.getDocument().addDocumentListener(
   new DocumentListener()
   {
      public void changedUpdate(DocumentEvent e)
      {
          newFilter();
      }
      public void insertUpdate(DocumentEvent e)
      {
          newFilter();
      }
      public void removeUpdate(DocumentEvent e)
      {
         newFilter();
      }
   }
);

Here is the newFilter method

private void newFilter()
{
    RowFilter< MyTableModel  , Object> rf = null; 
    //declare a row filter for your table model
    Try
    {
        rf = RowFilter.regexFilter("^" + jtfSearch.getText(), 0);  
        //initialize with a regular expression
    }
    catch (java.util.regex.PatternSyntaxException e)
    {
        return;
    }
    sorter.setRowFilter(rf);
}

The above example is able to filter JTable for its first column.