Bean Property Table Model : JTable Model « Swing « Java Tutorial

 * Copyright (C) 2001-2003 Colin Bell
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
import java.beans.BeanInfo;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Collections;
import java.util.Comparator;
import java.util.Vector;

import javax.swing.table.DefaultTableModel;

public class BeanPropertyTableModel extends DefaultTableModel
    private static final long serialVersionUID = 1L;

  private Object _bean;

  private String _nameColumnName = "Namecolumn";
  private String _valueColumnName = "Valuecolumn";

  public BeanPropertyTableModel()

  public void setBean(Object bean) throws RuntimeException
    _bean = bean;

  public void refresh() throws RuntimeException
    final Vector<Object> columnNames = new Vector<Object>();
    final Vector<Object> columnData = new Vector<Object>();
    if (_bean != null)
        BeanInfo info = Introspector.getBeanInfo(_bean.getClass(), Introspector.USE_ALL_BEANINFO);
        processBeanInfo(info, columnData);
      catch (Exception ex)
        throw new RuntimeException(ex);

    // Sort the rows by the property name.
    Collections.sort(columnData, new DataSorter());

    setDataVector(columnData, columnNames);

  private void processBeanInfo(BeanInfo info, Vector<Object> columnData)
    throws InvocationTargetException, IllegalAccessException
    BeanInfo[] extra = info.getAdditionalBeanInfo();
    if (extra != null)
      for (int i = 0; i < extra.length; ++i)
        processBeanInfo(extra[i], columnData);

    PropertyDescriptor[] propDesc = info.getPropertyDescriptors();
    for (int i = 0; i < propDesc.length; ++i)
      final String propName = propDesc[i].getName();
      final Method getter = propDesc[i].getReadMethod();
      if (propName != null && getter != null)
        Vector<Object> line = generateLine(propName, _bean, getter);
        if (line != null)

   * Generate a line for the passed property.
   * @param propName  Name of the property.
   * @param bean    Bean containg the property.
   * @param getter    The "getter" function to retrieve the
   *            properties value.
   * @return  A <CODE>Vector</CODE> containing the cells for the line in
   *      the table. Element zero the first cell etc. Return
   *      <CODE>null</CODE> if this property is <B>not</B> to be added
   *      to the table.
  protected Vector<Object> generateLine(String propName, Object bean, Method getter)
    throws InvocationTargetException, IllegalAccessException
    final Vector<Object> line = new Vector<Object>();
    line.add(executeGetter(bean, getter));
    return line;

  protected Object executeGetter(Object bean, Method getter)
    throws InvocationTargetException, IllegalAccessException
    return getter.invoke(bean, (Object[])null);

  public void setNameColumnName(String value)
    _nameColumnName = value;

  public void setValueColumnName(String value)
    _valueColumnName = value;

   * This comparator is compatible with the strange use of lists in this 
   * class.  This classes lists are Vectors with Strings as the first element
   * and any object as the other objects.
  private static final class DataSorter implements Comparator<Object>
    public int compare(Object o1, Object o2)
        Vector<Object> v1 = (Vector<Object>)o1;
        Vector<Object> v2 = (Vector<Object>)o2;
        String lhs = (String)v1.get(0);
        String rhs = (String)v2.get(0);
      return lhs.compareToIgnoreCase(rhs);

14.59.JTable Model
14.59.1.Create DefaultTableModel
14.59.2.Creating simple JTable using AbstractTableModel
14.59.3.Extending AbstractTableModelExtending AbstractTableModel
14.59.4.Creates tables that allow rows and columns to be added or deleted
14.59.5.Set table valueSet table value
14.59.6.Add logic to get value methodAdd logic to get value method
14.59.7.Subclass AbstractTableModel to reuse an existing data structure: Treat an array as an AbstractTableModelSubclass AbstractTableModel to reuse an existing data structure: Treat an array as an AbstractTableModel
14.59.8.Sparsely Populated Table ModelSparsely Populated Table Model
14.59.9.Listening to JTable Events with a TableColumnModelListenerListening to JTable Events with a TableColumnModelListener
14.59.10.The Calendar program.The Calendar program.
14.59.11.Sample Sorting Table ModelSample Sorting Table Model
14.59.12.Add columns to a table through DefaultTableModel
14.59.13.Insert a row to a table through DefaultTableModel
14.59.14.Insert a row to a table through DefaultTableModel at specified row
14.59.15.Append a row to a table through DefaultTableModel at specified row
14.59.16.Remove the first row from a table with DefaultTableModel
14.59.17.Remove the last row from a table with DefaultTableModel
14.59.18.Move the first row to the end of the table
14.59.19.Move the first two rows to the end of the table
14.59.20.Move the last two rows to the start of the table
14.59.21.Move the last row to the beginning of the table
14.59.22.Get all the table data from DefaultTableModel
14.59.23.Copy (clone) the data from the second row
14.59.24.Overwrite the date from the first row with DefaultTableModel
14.59.25.Add rows to a Table
14.59.26.Sharing a Table Model Between JTable Components
14.59.27.Disabling User Edits in a JTable with DefaultTableModel
14.59.28.Appending a Row to a JTable Component
14.59.29.Copy data from a table to a list
14.59.30.Map TableModel
14.59.31.Bean Property Table Model