/* * Copyright (c) 1997, 2004, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package javax.swing.table; import javax.swing.*;import javax.swing.event.*; /** *  The <code>TableModel</code> interface specifies the methods the *  <code>JTable</code> will use to interrogate a tabular data model. <p> * *  The <code>JTable</code> can be set up to display any data *  model which implements the *  <code>TableModel</code> interface with a couple of lines of code:  <p> *  <pre> *      TableModel myData = new MyTableModel(); *      JTable table = new JTable(myData); *  </pre><p> * * For further documentation, see <a href="http://java.sun.com/docs/books/tutorial/uiswing/components/table.html#data">Creating a Table Model</a> * in <em>The Java Tutorial</em>. * <p> * @author Philip Milne * @see JTable */ public interface TableModel{    /**     * Returns the number of rows in the model. A     * <code>JTable</code> uses this method to determine how many rows it     * should display.  This method should be quick, as it     * is called frequently during rendering.     *     * @return the number of rows in the model     * @see #getColumnCount     */    public int getRowCount();     /**     * Returns the number of columns in the model. A     * <code>JTable</code> uses this method to determine how many columns it     * should create and display by default.     *     * @return the number of columns in the model     * @see #getRowCount     */    public int getColumnCount();     /**     * Returns the name of the column at <code>columnIndex</code>.  This is used     * to initialize the table's column header name.  Note: this name does     * not need to be unique; two columns in a table can have the same name.     *     * @param   columnIndex     the index of the column     * @return  the name of the column     */    public String getColumnName(int columnIndex);     /**     * Returns the most specific superclass for all the cell values     * in the column.  This is used by the <code>JTable</code> to set up a     * default renderer and editor for the column.     *     * @param columnIndex  the index of the column     * @return the common ancestor class of the object values in the model.     */    public Class<?> getColumnClass(int columnIndex);     /**     * Returns true if the cell at <code>rowIndex</code> and     * <code>columnIndex</code>     * is editable.  Otherwise, <code>setValueAt</code> on the cell will not     * change the value of that cell.     *     * @param   rowIndex        the row whose value to be queried     * @param   columnIndex     the column whose value to be queried     * @return  true if the cell is editable     * @see #setValueAt     */    public boolean isCellEditable(int rowIndex, int columnIndex);     /**     * Returns the value for the cell at <code>columnIndex</code> and     * <code>rowIndex</code>.     *     * @param   rowIndex        the row whose value is to be queried     * @param   columnIndex     the column whose value is to be queried     * @return  the value Object at the specified cell     */    public Object getValueAt(int rowIndex, int columnIndex);     /**     * Sets the value in the cell at <code>columnIndex</code> and     * <code>rowIndex</code> to <code>aValue</code>.     *     * @param   aValue           the new value     * @param   rowIndex         the row whose value is to be changed     * @param   columnIndex      the column whose value is to be changed     * @see #getValueAt     * @see #isCellEditable     */    public void setValueAt(Object aValue, int rowIndex, int columnIndex);     /**     * Adds a listener to the list that is notified each time a change     * to the data model occurs.     *     * @param   l               the TableModelListener     */    public void addTableModelListener(TableModelListener l);     /**     * Removes a listener from the list that is notified each time a     * change to the data model occurs.     *     * @param   l               the TableModelListener     */    public void removeTableModelListener(TableModelListener l);}