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Swing 1.1 API Specification: Interface  AccessibleValue
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javax.accessibility</FONT>
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Interface  AccessibleValue</H2>
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<DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../javax/swing/JSlider.AccessibleJSlider.html">JSlider.AccessibleJSlider</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/AbstractButton.AccessibleAbstractButton.html">AbstractButton.AccessibleAbstractButton</A>, <A HREF="../../javax/swing/JScrollBar.AccessibleJScrollBar.html">JScrollBar.AccessibleJScrollBar</A>, <A HREF="../../javax/swing/JProgressBar.AccessibleJProgressBar.html">JProgressBar.AccessibleJProgressBar</A></DD>
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<DT>public abstract 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>
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<CODE>&nbsp;java.lang.Number</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/accessibility/AccessibleValue.html#getCurrentAccessibleValue()">getCurrentAccessibleValue</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the value of this object as a Number.</TD>
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<CODE>&nbsp;java.lang.Number</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/accessibility/AccessibleValue.html#getMaximumAccessibleValue()">getMaximumAccessibleValue</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the maximum value of this object as a Number.</TD>
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<CODE>&nbsp;java.lang.Number</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/accessibility/AccessibleValue.html#getMinimumAccessibleValue()">getMinimumAccessibleValue</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the minimum value of this object as a Number.</TD>
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<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/accessibility/AccessibleValue.html#setCurrentAccessibleValue(java.lang.Number)">setCurrentAccessibleValue</A></B>(java.lang.Number&nbsp;n)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the value of this object as a Number.</TD>
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<A NAME="getCurrentAccessibleValue()"><!-- --></A><H3>
getCurrentAccessibleValue</H3>
<PRE>
public java.lang.Number <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>
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<A NAME="setCurrentAccessibleValue(java.lang.Number)"><!-- --></A><H3>
setCurrentAccessibleValue</H3>
<PRE>
public boolean <B>setCurrentAccessibleValue</B>(java.lang.Number&nbsp;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>
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<A NAME="getMinimumAccessibleValue()"><!-- --></A><H3>
getMinimumAccessibleValue</H3>
<PRE>
public java.lang.Number <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>
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<A NAME="getMaximumAccessibleValue()"><!-- --></A><H3>
getMaximumAccessibleValue</H3>
<PRE>
public java.lang.Number <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>
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