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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Frameset//EN""http://www.w3.org/TR/REC-html40/frameset.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc on Thu Apr 27 23:39:11 PDT 2000 --><TITLE>Java 2 Platform SE v1.3: Class JRadioButton</TITLE><LINK REL ="stylesheet" TYPE="text/css" HREF="../../stylesheet.css" TITLE="Style"></HEAD><BODY BGCOLOR="white"><!-- ========== START OF NAVBAR ========== --><A NAME="navbar_top"><!-- --></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0"><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3"> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/JRadioButton.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../index-files/index-1.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM><b>Java<sup><font size=-2>TM</font></sup> 2 Platform<br>Std. Ed. v1.3</b></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../javax/swing/JProgressBar.AccessibleJProgressBar.html"><B>PREV CLASS</B></A> <A HREF="../../javax/swing/JRadioButton.AccessibleJRadioButton.html"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../index.html" TARGET="_top"><B>FRAMES</B></A> <A HREF="JRadioButton.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: <A HREF="#inner_class_summary">INNER</A> | <A HREF="#fields_inherited_from_class_javax.swing.AbstractButton">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><!-- =========== END OF NAVBAR =========== --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">javax.swing</FONT><BR>Class JRadioButton</H2><PRE><A HREF="../../java/lang/Object.html">java.lang.Object</A> | +--<A HREF="../../java/awt/Component.html">java.awt.Component</A> | +--<A HREF="../../java/awt/Container.html">java.awt.Container</A> | +--<A HREF="../../javax/swing/JComponent.html">javax.swing.JComponent</A> | +--<A HREF="../../javax/swing/AbstractButton.html">javax.swing.AbstractButton</A> | +--<A HREF="../../javax/swing/JToggleButton.html">javax.swing.JToggleButton</A> | +--<B>javax.swing.JRadioButton</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../javax/accessibility/Accessible.html">Accessible</A>, <A HREF="../../java/awt/image/ImageObserver.html">ImageObserver</A>, <A HREF="../../java/awt/ItemSelectable.html">ItemSelectable</A>, <A HREF="../../java/awt/MenuContainer.html">MenuContainer</A>, <A HREF="../../java/io/Serializable.html">Serializable</A>, <A HREF="../../javax/swing/SwingConstants.html">SwingConstants</A></DD></DL><HR><DL><DT>public class <B>JRadioButton</B><DT>extends <A HREF="../../javax/swing/JToggleButton.html">JToggleButton</A><DT>implements <A HREF="../../javax/accessibility/Accessible.html">Accessible</A></DL><P>An implementation of a radio button -- an item that can be selected or deselected, and which displays its state to the user. Used with a <A HREF="../../javax/swing/ButtonGroup.html"><CODE>ButtonGroup</CODE></A> object to create a group of buttons in which only one button at a time can be selected. (Create a ButtonGroup object and use its <code>add</code> method to include the JRadioButton objects in the group.) <blockquote> <strong>Note:</strong> The ButtonGroup object is a logical grouping -- not a physical grouping. Tocreate a button panel, you should still create a <A HREF="../../javax/swing/JPanel.html"><CODE>JPanel</CODE></A> or similar container-object and add a <A HREF="../../javax/swing/border/Border.html"><CODE>Border</CODE></A> to it to set it off from surrounding components. </blockquote> <p> See <a href="http://java.sun.com/docs/books/tutorial/uiswing/components/button.html">How to Use Buttons, Check Boxes, and Radio Buttons</a> in <em>The Java Tutorial</em> for further documentation. <p> For the keyboard keys used by this component in the standard Look and Feel (L&F) renditions, see the <a href="doc-files/Key-Index.html#JRadioButton">JRadioButton</a> key assignments. <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="../../javax/swing/ButtonGroup.html"><CODE>ButtonGroup</CODE></A>, <A HREF="../../javax/swing/JCheckBox.html"><CODE>JCheckBox</CODE></A>, <A HREF="../../serialized-form.html#javax.swing.JRadioButton">Serialized Form</A></DL><HR><P><!-- ======== INNER CLASS SUMMARY ======== -->⌨️ 快捷键说明
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