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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 23:37:15 PDT 2000 --><TITLE>Java 2 Platform SE v1.3: Interface AccessibleValue</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/AccessibleValue.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/accessibility/AccessibleText.html"><B>PREV CLASS</B></A> NEXT CLASS</FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../index.html" TARGET="_top"><B>FRAMES</B></A> <A HREF="AccessibleValue.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: INNER | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><!-- =========== END OF NAVBAR =========== --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">javax.accessibility</FONT><BR>Interface AccessibleValue</H2><DL><DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../java/awt/Button.AccessibleAWTButton.html">Button.AccessibleAWTButton</A>, <A HREF="../../java/awt/Checkbox.AccessibleAWTCheckbox.html">Checkbox.AccessibleAWTCheckbox</A>, <A HREF="../../java/awt/CheckboxMenuItem.AccessibleAWTCheckboxMenuItem.html">CheckboxMenuItem.AccessibleAWTCheckboxMenuItem</A>, <A HREF="../../java/awt/MenuItem.AccessibleAWTMenuItem.html">MenuItem.AccessibleAWTMenuItem</A>, <A HREF="../../java/awt/Scrollbar.AccessibleAWTScrollBar.html">Scrollbar.AccessibleAWTScrollBar</A>, <A HREF="../../javax/swing/AbstractButton.AccessibleAbstractButton.html">AbstractButton.AccessibleAbstractButton</A>, <A HREF="../../javax/swing/JInternalFrame.AccessibleJInternalFrame.html">JInternalFrame.AccessibleJInternalFrame</A>, <A HREF="../../javax/swing/JInternalFrame.JDesktopIcon.AccessibleJDesktopIcon.html">JInternalFrame.JDesktopIcon.AccessibleJDesktopIcon</A>, <A HREF="../../javax/swing/JSplitPane.AccessibleJSplitPane.html">JSplitPane.AccessibleJSplitPane</A>, <A HREF="../../javax/swing/JScrollBar.AccessibleJScrollBar.html">JScrollBar.AccessibleJScrollBar</A>, <A HREF="../../javax/swing/JProgressBar.AccessibleJProgressBar.html">JProgressBar.AccessibleJProgressBar</A>, <A HREF="../../javax/swing/JSlider.AccessibleJSlider.html">JSlider.AccessibleJSlider</A></DD></DL><HR><DL><DT>public interface <B>AccessibleValue</B></DL><P>The AccessibleValue interface should be supported by any object that supports a numerical value (e.g., a scroll bar). This interface provides the standard mechanism for an assistive technology to determine and set the numerical value as well as get the minimum and maximum values. Applications can determine if an object supports the AccessibleValue interface by first obtaining its AccessibleContext (see <A HREF="../../javax/accessibility/Accessible.html"><CODE>Accessible</CODE></A>) and then calling the <A HREF="../../javax/accessibility/AccessibleContext.html#getAccessibleValue()"><CODE>AccessibleContext.getAccessibleValue()</CODE></A> method. If the return value is not null, the object supports this interface.<P><DL><DT><B>See Also: </B><DD><A HREF="../../javax/accessibility/Accessible.html"><CODE>Accessible</CODE></A>, <A HREF="../../javax/accessibility/Accessible.html#getAccessibleContext()"><CODE>Accessible.getAccessibleContext()</CODE></A>, <A HREF="../../javax/accessibility/AccessibleContext.html"><CODE>AccessibleContext</CODE></A>, <A HREF="../../javax/accessibility/AccessibleContext.html#getAccessibleValue()"><CODE>AccessibleContext.getAccessibleValue()</CODE></A></DL><HR><P><!-- ======== INNER CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><!-- ======== CONSTRUCTOR SUMMARY ======== --><!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Method Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../java/lang/Number.html">Number</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/accessibility/AccessibleValue.html#getCurrentAccessibleValue()">getCurrentAccessibleValue</A></B>()</CODE><BR> Get the value of this object as a Number.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../java/lang/Number.html">Number</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/accessibility/AccessibleValue.html#getMaximumAccessibleValue()">getMaximumAccessibleValue</A></B>()</CODE><BR> Get the maximum value of this object as a Number.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../java/lang/Number.html">Number</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/accessibility/AccessibleValue.html#getMinimumAccessibleValue()">getMinimumAccessibleValue</A></B>()</CODE><BR> Get the minimum value of this object as a Number.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/accessibility/AccessibleValue.html#setCurrentAccessibleValue(java.lang.Number)">setCurrentAccessibleValue</A></B>(<A HREF="../../java/lang/Number.html">Number</A> n)</CODE><BR> Set the value of this object as a Number.</TD></TR></TABLE> <P><!-- ============ FIELD DETAIL =========== --><!-- ========= CONSTRUCTOR DETAIL ======== --><!-- ============ METHOD DETAIL ========== --><A NAME="method_detail"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Method Detail</B></FONT></TD></TR></TABLE><A NAME="getCurrentAccessibleValue()"><!-- --></A><H3>getCurrentAccessibleValue</H3><PRE>public <A HREF="../../java/lang/Number.html">Number</A> <B>getCurrentAccessibleValue</B>()</PRE><DL><DD>Get the value of this object as a Number. If the value has not been set, the return value will be null.<DD><DL><DT><B>Returns:</B><DD>value of the object<DT><B>See Also: </B><DD><A HREF="../../javax/accessibility/AccessibleValue.html#setCurrentAccessibleValue(java.lang.Number)"><CODE>setCurrentAccessibleValue(java.lang.Number)</CODE></A></DL></DD></DL><HR><A NAME="setCurrentAccessibleValue(java.lang.Number)"><!-- --></A><H3>setCurrentAccessibleValue</H3><PRE>public boolean <B>setCurrentAccessibleValue</B>(<A HREF="../../java/lang/Number.html">Number</A> n)</PRE><DL><DD>Set the value of this object as a Number.<DD><DL><DT><B>Returns:</B><DD>True if the value was set; else False<DT><B>See Also: </B><DD><A HREF="../../javax/accessibility/AccessibleValue.html#getCurrentAccessibleValue()"><CODE>getCurrentAccessibleValue()</CODE></A></DL></DD></DL><HR><A NAME="getMinimumAccessibleValue()"><!-- --></A><H3>getMinimumAccessibleValue</H3><PRE>public <A HREF="../../java/lang/Number.html">Number</A> <B>getMinimumAccessibleValue</B>()</PRE><DL><DD>Get the minimum value of this object as a Number.<DD><DL><DT><B>Returns:</B><DD>Minimum value of the object; null if this object does not have a minimum value<DT><B>See Also: </B><DD><A HREF="../../javax/accessibility/AccessibleValue.html#getMaximumAccessibleValue()"><CODE>getMaximumAccessibleValue()</CODE></A></DL></DD></DL><HR><A NAME="getMaximumAccessibleValue()"><!-- --></A><H3>getMaximumAccessibleValue</H3><PRE>public <A HREF="../../java/lang/Number.html">Number</A> <B>getMaximumAccessibleValue</B>()</PRE><DL><DD>Get the maximum value of this object as a Number.<DD><DL><DT><B>Returns:</B><DD>Maximum value of the object; null if this object does not have a maximum value<DT><B>See Also: </B><DD><A HREF="../../javax/accessibility/AccessibleValue.html#getMinimumAccessibleValue()"><CODE>getMinimumAccessibleValue()</CODE></A></DL></DD></DL><!-- ========= END OF CLASS DATA ========= --><HR><!-- ========== START OF NAVBAR ========== --><A NAME="navbar_bottom"><!-- --></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0"><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_bottom_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/AccessibleValue.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. 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