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Swing 1.1 API Specification: Interface  TableModel
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javax.swing.table</FONT>
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Interface  TableModel</H2>
<DL>
<DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../../javax/swing/table/AbstractTableModel.html">AbstractTableModel</A></DD>
</DL>
<HR>
<DL>
<DT>public abstract interface <B>TableModel</B></DL>

<P>
The <B>TableModel</B> interface ispecifies the methods the JTable 
  will use to interrogate a tabular data model. <p>

  The JTable can be set up to display any data model which implements the 
  TableModel interface with a couple of lines of code:  <p>
  <code>
  TableModel myData = new MyTableModel(); 
  JTable table = new JTable(myData);
  </code><p>
<P>
<DL>
<DT><B>See Also: </B><DD><A HREF="../../../javax/swing/JTable.html"><CODE>JTable</CODE></A>, 
<A HREF="../../../javax/swing/table/AbstractTableModel.html"><CODE>AbstractTableModel</CODE></A></DL>
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<B>Method Summary</B></FONT></TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/swing/table/TableModel.html#addTableModelListener(javax.swing.event.TableModelListener)">addTableModelListener</A></B>(<A HREF="../../../javax/swing/event/TableModelListener.html">TableModelListener</A>&nbsp;l)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Add a listener to the list that's notified each time a change
 to the data model occurs.</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;java.lang.Class</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/swing/table/TableModel.html#getColumnClass(int)">getColumnClass</A></B>(int&nbsp;columnIndex)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the lowest common denominator Class in the column.</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/swing/table/TableModel.html#getColumnCount()">getColumnCount</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the number of columns managed by the data source object.</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/swing/table/TableModel.html#getColumnName(int)">getColumnName</A></B>(int&nbsp;columnIndex)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the name of the column at <i>columnIndex</i>.</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/swing/table/TableModel.html#getRowCount()">getRowCount</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the number of records managed by the data source object.</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;java.lang.Object</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/swing/table/TableModel.html#getValueAt(int, int)">getValueAt</A></B>(int&nbsp;rowIndex,
           int&nbsp;columnIndex)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns an attribute value for the cell at <I>columnIndex</I>
 and <I>rowIndex</I>.</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/swing/table/TableModel.html#isCellEditable(int, int)">isCellEditable</A></B>(int&nbsp;rowIndex,
               int&nbsp;columnIndex)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns true if the cell at <I>rowIndex</I> and <I>columnIndex</I>
 is editable.</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/swing/table/TableModel.html#removeTableModelListener(javax.swing.event.TableModelListener)">removeTableModelListener</A></B>(<A HREF="../../../javax/swing/event/TableModelListener.html">TableModelListener</A>&nbsp;l)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Remove a listener from the list that's notified each time a
 change to the data model occurs.</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/swing/table/TableModel.html#setValueAt(java.lang.Object, int, int)">setValueAt</A></B>(java.lang.Object&nbsp;aValue,
           int&nbsp;rowIndex,
           int&nbsp;columnIndex)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets an attribute value for the record in the cell at
 <I>columnIndex</I> and <I>rowIndex</I>.</TD>
</TR>
</TABLE>
&nbsp;
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<A NAME="getRowCount()"><!-- --></A><H3>
getRowCount</H3>
<PRE>
public int <B>getRowCount</B>()</PRE>
<DL>
<DD>Returns the number of records managed by the data source object. A
 <B>JTable</B> uses this method to determine how many rows it
 should create and display.  This method should be quick, as it
 is call by <B>JTable</B> quite frequently.<DD><DL>
<DT><B>Returns:</B><DD>the number or rows in the model<DT><B>See Also: </B><DD><A HREF="../../../javax/swing/table/TableModel.html#getColumnCount()"><CODE>getColumnCount()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getColumnCount()"><!-- --></A><H3>
getColumnCount</H3>
<PRE>
public int <B>getColumnCount</B>()</PRE>
<DL>
<DD>Returns the number of columns managed by the data source object. A
 <B>JTable</B> uses this method to determine how many columns it
 should create and display on initialization.<DD><DL>
<DT><B>Returns:</B><DD>the number or columns in the model<DT><B>See Also: </B><DD><A HREF="../../../javax/swing/table/TableModel.html#getRowCount()"><CODE>getRowCount()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getColumnName(int)"><!-- --></A><H3>
getColumnName</H3>
<PRE>
public java.lang.String <B>getColumnName</B>(int&nbsp;columnIndex)</PRE>
<DL>
<DD>Returns the name of the column at <i>columnIndex</i>.  This is used
 to initialize the table's column header name.  Note, this name does
 not need to be unique.  Two columns on a table can have the same name.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>columnIndex</CODE> - the index of column<DT><B>Returns:</B><DD>the name of the column</DL>
</DD>
</DL>
<HR>

<A NAME="getColumnClass(int)"><!-- --></A><H3>
getColumnClass</H3>
<PRE>
public java.lang.Class <B>getColumnClass</B>(int&nbsp;columnIndex)</PRE>
<DL>
<DD>Returns the lowest common denominator Class in the column.  This is used
 by the table to set up a default renderer and editor for the column.<DD><DL>
<DT><B>Returns:</B><DD>the common ancestor class of the object values in the model.</DL>
</DD>
</DL>
<HR>

<A NAME="isCellEditable(int, int)"><!-- --></A><H3>
isCellEditable</H3>
<PRE>
public boolean <B>isCellEditable</B>(int&nbsp;rowIndex,
                              int&nbsp;columnIndex)</PRE>
<DL>
<DD>Returns true if the cell at <I>rowIndex</I> and <I>columnIndex</I>
 is editable.  Otherwise, setValueAt() on the cell will not change
 the value of that cell.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>rowIndex</CODE> - the row whose value is to be looked up<DD><CODE>columnIndex</CODE> - the column whose value is to be looked up<DT><B>Returns:</B><DD>true if the cell is editable.<DT><B>See Also: </B><DD><A HREF="../../../javax/swing/table/TableModel.html#setValueAt(java.lang.Object, int, int)"><CODE>setValueAt(java.lang.Object, int, int)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getValueAt(int, int)"><!-- --></A><H3>
getValueAt</H3>
<PRE>
public java.lang.Object <B>getValueAt</B>(int&nbsp;rowIndex,
                                   int&nbsp;columnIndex)</PRE>
<DL>
<DD>Returns an attribute value for the cell at <I>columnIndex</I>
 and <I>rowIndex</I>.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>rowIndex</CODE> - the row whose value is to be looked up<DD><CODE>columnIndex</CODE> - the column whose value is to be looked up<DT><B>Returns:</B><DD>the value Object at the specified cell</DL>
</DD>
</DL>
<HR>

<A NAME="setValueAt(java.lang.Object, int, int)"><!-- --></A><H3>
setValueAt</H3>
<PRE>
public void <B>setValueAt</B>(java.lang.Object&nbsp;aValue,
                       int&nbsp;rowIndex,
                       int&nbsp;columnIndex)</PRE>
<DL>
<DD>Sets an attribute value for the record in the cell at
 <I>columnIndex</I> and <I>rowIndex</I>.  <I>aValue</I> is
 the new value.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>aValue</CODE> - the new value<DD><CODE>rowIndex</CODE> - the row whose value is to be changed<DD><CODE>columnIndex</CODE> - the column whose value is to be changed<DT><B>See Also: </B><DD><A HREF="../../../javax/swing/table/TableModel.html#getValueAt(int, int)"><CODE>getValueAt(int, int)</CODE></A>, 
<A HREF="../../../javax/swing/table/TableModel.html#isCellEditable(int, int)"><CODE>isCellEditable(int, int)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="addTableModelListener(javax.swing.event.TableModelListener)"><!-- --></A><H3>
addTableModelListener</H3>
<PRE>
public void <B>addTableModelListener</B>(<A HREF="../../../javax/swing/event/TableModelListener.html">TableModelListener</A>&nbsp;l)</PRE>
<DL>
<DD>Add a listener to the list that's notified each time a change
 to the data model occurs.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>l</CODE> - the TableModelListener</DL>
</DD>
</DL>
<HR>

<A NAME="removeTableModelListener(javax.swing.event.TableModelListener)"><!-- --></A><H3>
removeTableModelListener</H3>
<PRE>
public void <B>removeTableModelListener</B>(<A HREF="../../../javax/swing/event/TableModelListener.html">TableModelListener</A>&nbsp;l)</PRE>
<DL>
<DD>Remove a listener from the list that's notified each time a
 change to the data model occurs.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>l</CODE> - the TableModelListener</DL>
</DD>
</DL>
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