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Swing 1.1 API Specification: Class  ButtonGroup
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javax.swing</FONT>
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Class  ButtonGroup</H2>
<PRE>
java.lang.Object
  |
  +--<B>javax.swing.ButtonGroup</B>
</PRE>
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<DL>
<DT>public class <B>ButtonGroup</B><DT>extends java.lang.Object<DT>implements java.io.Serializable</DL>

<P>
This class is used to create a multiple-exclusion scope for
 a set of buttons. Creating a set of buttons with the
 same ButtonGroup object means that turning "on" one of those buttons 
 turns off all other buttons in the group. A ButtonGroup can be used with
 sets of JButton, JRadioButton, or JRadioButtonMenuItem objects.
 <p>
 Initially, all buttons in the group are unselected. Once any button is
 selected, one button is always selected in the group. There is no way
 to turn a button programmatically to "off", in order to clear the button
 group. To give the appearance of "none selected", add an invisible radio
 button to the group and then programmatically select that button to 
 turn off all the displayed radio buttons. For example, a normal button
 with the label "none" could be wired to select the invisible radio button.
 <p>
 <strong>Warning:</strong>
 Serialized objects of this class will not be compatible with 
 future Swing releases.  The current serialization support is appropriate
 for short term storage or RMI between applications running the same
 version of Swing.  A future release of Swing will provide support for
 long term persistence.
<P>
<DL>
<DT><B>See Also: </B><DD><A HREF="../../serialized-form.html#javax.swing.ButtonGroup">Serialized Form</A></DL>
<HR>

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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;java.util.Vector</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/swing/ButtonGroup.html#buttons">buttons</A></B></CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
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<TD><CODE><B><A HREF="../../javax/swing/ButtonGroup.html#ButtonGroup()">ButtonGroup</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Creates a new ButtonGroup.</TD>
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<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/swing/ButtonGroup.html#add(javax.swing.AbstractButton)">add</A></B>(<A HREF="../../javax/swing/AbstractButton.html">AbstractButton</A>&nbsp;b)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Adds the button to the group.</TD>
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<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;java.util.Enumeration</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/swing/ButtonGroup.html#getElements()">getElements</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Return all the buttons that are participating in
 this group.</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../javax/swing/ButtonModel.html">ButtonModel</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/swing/ButtonGroup.html#getSelection()">getSelection</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Return the selected button model.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/swing/ButtonGroup.html#isSelected(javax.swing.ButtonModel)">isSelected</A></B>(<A HREF="../../javax/swing/ButtonModel.html">ButtonModel</A>&nbsp;m)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the selected value for the button.</TD>
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<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/swing/ButtonGroup.html#remove(javax.swing.AbstractButton)">remove</A></B>(<A HREF="../../javax/swing/AbstractButton.html">AbstractButton</A>&nbsp;b)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Removes the button from the group.</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/ButtonGroup.html#setSelected(javax.swing.ButtonModel, boolean)">setSelected</A></B>(<A HREF="../../javax/swing/ButtonModel.html">ButtonModel</A>&nbsp;m,
            boolean&nbsp;b)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets the selected value for the button.</TD>
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<TD><B>Methods inherited from class java.lang.Object</B></TD>
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<TR BGCOLOR="white" ID="TableRowColor">
<TD><CODE>clone, 
equals, 
finalize, 
getClass, 
hashCode, 
notify, 
notifyAll, 
toString, 
wait, 
wait, 
wait</CODE></TD>
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<A NAME="buttons"><!-- --></A><H3>
buttons</H3>
<PRE>
protected java.util.Vector <B>buttons</B></PRE>
<DL>
</DL>

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<A NAME="ButtonGroup()"><!-- --></A><H3>
ButtonGroup</H3>
<PRE>
public <B>ButtonGroup</B>()</PRE>
<DL>
<DD>Creates a new ButtonGroup.</DL>

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<A NAME="add(javax.swing.AbstractButton)"><!-- --></A><H3>
add</H3>
<PRE>
public void <B>add</B>(<A HREF="../../javax/swing/AbstractButton.html">AbstractButton</A>&nbsp;b)</PRE>
<DL>
<DD>Adds the button to the group.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="remove(javax.swing.AbstractButton)"><!-- --></A><H3>
remove</H3>
<PRE>
public void <B>remove</B>(<A HREF="../../javax/swing/AbstractButton.html">AbstractButton</A>&nbsp;b)</PRE>
<DL>
<DD>Removes the button from the group.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getElements()"><!-- --></A><H3>
getElements</H3>
<PRE>
public java.util.Enumeration <B>getElements</B>()</PRE>
<DL>
<DD>Return all the buttons that are participating in
 this group.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getSelection()"><!-- --></A><H3>
getSelection</H3>
<PRE>
public <A HREF="../../javax/swing/ButtonModel.html">ButtonModel</A> <B>getSelection</B>()</PRE>
<DL>
<DD>Return the selected button model.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="setSelected(javax.swing.ButtonModel, boolean)"><!-- --></A><H3>
setSelected</H3>
<PRE>
public void <B>setSelected</B>(<A HREF="../../javax/swing/ButtonModel.html">ButtonModel</A>&nbsp;m,
                        boolean&nbsp;b)</PRE>
<DL>
<DD>Sets the selected value for the button.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="isSelected(javax.swing.ButtonModel)"><!-- --></A><H3>
isSelected</H3>
<PRE>
public boolean <B>isSelected</B>(<A HREF="../../javax/swing/ButtonModel.html">ButtonModel</A>&nbsp;m)</PRE>
<DL>
<DD>Returns the selected value for the button.<DD><DL>
</DL>
</DD>
</DL>
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