keyedobjects.html

JFreeChart 9.20的文档 需要用JAVA在网页上做统计图的东东

<B>Method Detail</B></FONT></TD>
</TR>
</TABLE>

<A NAME="getItemCount()"><!-- --></A><H3>
getItemCount</H3>
<PRE>
public int <B>getItemCount</B>()</PRE>
<DL>
<DD>Returns the number of items (values) in the collection.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the item count.</DL>
</DD>
</DL>
<HR>

<A NAME="getObject(int)"><!-- --></A><H3>
getObject</H3>
<PRE>
public java.lang.Object <B>getObject</B>(int&nbsp;item)</PRE>
<DL>
<DD>Returns an object.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>item</CODE> - the item index (zero-based).
<DT><B>Returns:</B><DD>The object (<code>null</code> if the index is out of range).</DL>
</DD>
</DL>
<HR>

<A NAME="getKey(int)"><!-- --></A><H3>
getKey</H3>
<PRE>
public java.lang.Comparable <B>getKey</B>(int&nbsp;index)</PRE>
<DL>
<DD>Returns a key.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>index</CODE> - the item index (zero-based).
<DT><B>Returns:</B><DD>the row key.</DL>
</DD>
</DL>
<HR>

<A NAME="getIndex(java.lang.Comparable)"><!-- --></A><H3>
getIndex</H3>
<PRE>
public int <B>getIndex</B>(java.lang.Comparable&nbsp;key)</PRE>
<DL>
<DD>Returns the index for a given key.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>key</CODE> - the key.
<DT><B>Returns:</B><DD>the index.</DL>
</DD>
</DL>
<HR>

<A NAME="getKeys()"><!-- --></A><H3>
getKeys</H3>
<PRE>
public java.util.List <B>getKeys</B>()</PRE>
<DL>
<DD>Returns the keys.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the keys.</DL>
</DD>
</DL>
<HR>

<A NAME="getObject(java.lang.Comparable)"><!-- --></A><H3>
getObject</H3>
<PRE>
public java.lang.Object <B>getObject</B>(java.lang.Comparable&nbsp;key)</PRE>
<DL>
<DD>Returns the object for a given key. If the key is not recognised, the method should 
 return <code>null</code>.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>key</CODE> - the key.
<DT><B>Returns:</B><DD>The object (possibly <code>null</code>).</DL>
</DD>
</DL>
<HR>

<A NAME="addObject(java.lang.Comparable, java.lang.Object)"><!-- --></A><H3>
addObject</H3>
<PRE>
public void <B>addObject</B>(java.lang.Comparable&nbsp;key,
                      java.lang.Object&nbsp;object)</PRE>
<DL>
<DD>Adds a new object to the collection, or overwrites an existing object.
 <P>
 This is the same as the setObject(...) method.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>key</CODE> - the key.<DD><CODE>object</CODE> - the object.</DL>
</DD>
</DL>
<HR>

<A NAME="setObject(java.lang.Comparable, java.lang.Object)"><!-- --></A><H3>
setObject</H3>
<PRE>
public void <B>setObject</B>(java.lang.Comparable&nbsp;key,
                      java.lang.Object&nbsp;object)</PRE>
<DL>
<DD>Replaces an existing object, or adds a new object to the collection.
 <P>
 This is the same as the addObject(...) method.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>key</CODE> - the key.<DD><CODE>object</CODE> - the object.</DL>
</DD>
</DL>
<HR>

<A NAME="removeValue(int)"><!-- --></A><H3>
removeValue</H3>
<PRE>
public void <B>removeValue</B>(int&nbsp;index)</PRE>
<DL>
<DD>Removes a value from the collection.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>index</CODE> - the index of the item to remove.</DL>
</DD>
</DL>
<HR>

<A NAME="removeValue(java.lang.Comparable)"><!-- --></A><H3>
removeValue</H3>
<PRE>
public void <B>removeValue</B>(java.lang.Comparable&nbsp;key)</PRE>
<DL>
<DD>Removes a value from the collection.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>key</CODE> - the key of the item to remove.</DL>
</DD>
</DL>
<HR>

<A NAME="clone()"><!-- --></A><H3>
clone</H3>
<PRE>
public java.lang.Object <B>clone</B>()
                       throws java.lang.CloneNotSupportedException</PRE>
<DL>
<DD>Returns a clone of this object.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>clone</CODE> in interface <CODE>org.jfree.util.PublicCloneable</CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>A clone.
<DT><B>Throws:</B>
<DD><CODE>java.lang.CloneNotSupportedException</CODE> - if there is a problem cloning.</DL>
</DD>
</DL>
<HR>

<A NAME="equals(java.lang.Object)"><!-- --></A><H3>
equals</H3>
<PRE>
public boolean <B>equals</B>(java.lang.Object&nbsp;o)</PRE>
<DL>
<DD>Tests if this object is equal to another.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>o</CODE> - the other object.
<DT><B>Returns:</B><DD>A boolean.</DL>
</DD>
</DL>
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