httpsession.html
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</DL>
<HR>
<A NAME="getId()"><!-- --></A><H3>
getId</H3>
<PRE>
public java.lang.String <B>getId</B>()</PRE>
<DL>
<DD>Returns a string containing the unique identifier assigned
to this session. The identifier is assigned
by the servlet container and is implementation dependent.<DD><DL>
<DT><B>Returns:</B><DD>a string specifying the identifier
assigned to this session</DL>
</DD>
</DL>
<HR>
<A NAME="getLastAccessedTime()"><!-- --></A><H3>
getLastAccessedTime</H3>
<PRE>
public long <B>getLastAccessedTime</B>()</PRE>
<DL>
<DD>Returns the last time the client sent a request associated with
this session, as the number of milliseconds since midnight
January 1, 1970 GMT, and marked by the time the container recieved the request.
<p>Actions that your application takes, such as getting or setting
a value associated with the session, do not affect the access
time.<DD><DL>
<DT><B>Returns:</B><DD>a <code>long</code>
representing the last time
the client sent a request associated
with this session, expressed in
milliseconds since 1/1/1970 GMT</DL>
</DD>
</DL>
<HR>
<A NAME="getServletContext()"><!-- --></A><H3>
getServletContext</H3>
<PRE>
public <A HREF="../../../javax/servlet/ServletContext.html">ServletContext</A> <B>getServletContext</B>()</PRE>
<DL>
<DD>Returns the ServletContext to which this session belongs.<DD><DL>
<DT><B>Returns:</B><DD>The ServletContext object for the web application<DT><B>Since: </B><DD>2.3</DD>
</DL>
</DD>
</DL>
<HR>
<A NAME="setMaxInactiveInterval(int)"><!-- --></A><H3>
setMaxInactiveInterval</H3>
<PRE>
public void <B>setMaxInactiveInterval</B>(int interval)</PRE>
<DL>
<DD>Specifies the time, in seconds, between client requests before the
servlet container will invalidate this session. A negative time
indicates the session should never timeout.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>interval</CODE> - An integer specifying the number
of seconds</DL>
</DD>
</DL>
<HR>
<A NAME="getMaxInactiveInterval()"><!-- --></A><H3>
getMaxInactiveInterval</H3>
<PRE>
public int <B>getMaxInactiveInterval</B>()</PRE>
<DL>
<DD>Returns the maximum time interval, in seconds, that
the servlet container will keep this session open between
client accesses. After this interval, the servlet container
will invalidate the session. The maximum time interval can be set
with the <code>setMaxInactiveInterval</code> method.
A negative time indicates the session should never timeout.<DD><DL>
<DT><B>Returns:</B><DD>an integer specifying the number of
seconds this session remains open
between client requests<DT><B>See Also: </B><DD><A HREF="../../../javax/servlet/http/HttpSession.html#setMaxInactiveInterval(int)"><CODE>setMaxInactiveInterval(int)</CODE></A></DL>
</DD>
</DL>
<HR>
<A NAME="getSessionContext()"><!-- --></A><H3>
getSessionContext</H3>
<PRE>
public <A HREF="../../../javax/servlet/http/HttpSessionContext.html">HttpSessionContext</A> <B>getSessionContext</B>()</PRE>
<DL>
<DD><B>Deprecated.</B> <I>As of Version 2.1, this method is
deprecated and has no replacement.
It will be removed in a future
version of the Java Servlet API.</I>
<P>
</DL>
<HR>
<A NAME="getAttribute(java.lang.String)"><!-- --></A><H3>
getAttribute</H3>
<PRE>
public java.lang.Object <B>getAttribute</B>(java.lang.String name)</PRE>
<DL>
<DD>Returns the object bound with the specified name in this session, or
<code>null</code> if no object is bound under the name.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>name</CODE> - a string specifying the name of the object<DT><B>Returns:</B><DD>the object with the specified name<DT><B>Throws:</B><DD><CODE>java.lang.IllegalStateException</CODE> - if this method is called on an
invalidated session</DL>
</DD>
</DL>
<HR>
<A NAME="getValue(java.lang.String)"><!-- --></A><H3>
getValue</H3>
<PRE>
public java.lang.Object <B>getValue</B>(java.lang.String name)</PRE>
<DL>
<DD><B>Deprecated.</B> <I>As of Version 2.2, this method is
replaced by <A HREF="../../../javax/servlet/http/HttpSession.html#getAttribute(java.lang.String)"><CODE>getAttribute(java.lang.String)</CODE></A>.</I>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>name</CODE> - a string specifying the name of the object<DT><B>Returns:</B><DD>the object with the specified name<DT><B>Throws:</B><DD><CODE>java.lang.IllegalStateException</CODE> - if this method is called on an
invalidated session</DL>
</DD>
</DL>
<HR>
<A NAME="getAttributeNames()"><!-- --></A><H3>
getAttributeNames</H3>
<PRE>
public java.util.Enumeration <B>getAttributeNames</B>()</PRE>
<DL>
<DD>Returns an <code>Enumeration</code> of <code>String</code> objects
containing the names of all the objects bound to this session.<DD><DL>
<DT><B>Returns:</B><DD>an <code>Enumeration</code> of
<code>String</code> objects specifying the
names of all the objects bound to
this session<DT><B>Throws:</B><DD><CODE>java.lang.IllegalStateException</CODE> - if this method is called on an
invalidated session</DL>
</DD>
</DL>
<HR>
<A NAME="getValueNames()"><!-- --></A><H3>
getValueNames</H3>
<PRE>
public java.lang.String[] <B>getValueNames</B>()</PRE>
<DL>
<DD><B>Deprecated.</B> <I>As of Version 2.2, this method is
replaced by <A HREF="../../../javax/servlet/http/HttpSession.html#getAttributeNames()"><CODE>getAttributeNames()</CODE></A></I>
<P>
<DD><DL>
<DT><B>Returns:</B><DD>an array of <code>String</code>
objects specifying the
names of all the objects bound to
this session<DT><B>Throws:</B><DD><CODE>java.lang.IllegalStateException</CODE> - if this method is called on an
invalidated session</DL>
</DD>
</DL>
<HR>
<A NAME="setAttribute(java.lang.String, java.lang.Object)"><!-- --></A><H3>
setAttribute</H3>
<PRE>
public void <B>setAttribute</B>(java.lang.String name,
java.lang.Object value)</PRE>
<DL>
<DD>Binds an object to this session, using the name specified.
If an object of the same name is already bound to the session,
the object is replaced.
<p>After this method executes, and if the new object
implements <code>HttpSessionBindingListener</code>,
the container calls
<code>HttpSessionBindingListener.valueBound</code>. The container then
notifies any <code>HttpSessionAttributeListener</code>s in the web
application.
<p>If an object was already bound to this session of this name
that implements <code>HttpSessionBindingListener</code>, its
<code>HttpSessionBindingListener.valueUnbound</code> method is called.
<p>If the value passed in is null, this has the same effect as calling
<code>removeAttribute()<code>.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>name</CODE> - the name to which the object is bound;
cannot be null<DD><CODE>value</CODE> - the object to be bound<DT><B>Throws:</B><DD><CODE>java.lang.IllegalStateException</CODE> - if this method is called on an
invalidated session</DL>
</DD>
</DL>
<HR>
<A NAME="putValue(java.lang.String, java.lang.Object)"><!-- --></A><H3>
putValue</H3>
<PRE>
public void <B>putValue</B>(java.lang.String name,
java.lang.Object value)</PRE>
<DL>
<DD><B>Deprecated.</B> <I>As of Version 2.2, this method is
replaced by <A HREF="../../../javax/servlet/http/HttpSession.html#setAttribute(java.lang.String, java.lang.Object)"><CODE>setAttribute(java.lang.String, java.lang.Object)</CODE></A></I>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>name</CODE> - the name to which the object is bound;
cannot be null<DD><CODE>value</CODE> - the object to be bound; cannot be null<DT><B>Throws:</B><DD><CODE>java.lang.IllegalStateException</CODE> - if this method is called on an
invalidated session</DL>
</DD>
</DL>
<HR>
<A NAME="removeAttribute(java.lang.String)"><!-- --></A><H3>
removeAttribute</H3>
<PRE>
public void <B>removeAttribute</B>(java.lang.String name)</PRE>
<DL>
<DD>Removes the object bound with the specified name from
this session. If the session does not have an object
bound with the specified name, this method does nothing.
<p>After this method executes, and if the object
implements <code>HttpSessionBindingListener</code>,
the container calls
<code>HttpSessionBindingListener.valueUnbound</code>. The container
then notifies any <code>HttpSessionAttributeListener</code>s in the web
application.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>name</CODE> - the name of the object to
remove from this session<DT><B>Throws:</B><DD><CODE>java.lang.IllegalStateException</CODE> - if this method is called on an
invalidated session</DL>
</DD>
</DL>
<HR>
<A NAME="removeValue(java.lang.String)"><!-- --></A><H3>
removeValue</H3>
<PRE>
public void <B>removeValue</B>(java.lang.String name)</PRE>
<DL>
<DD><B>Deprecated.</B> <I>As of Version 2.2, this method is
replaced by <A HREF="../../../javax/servlet/http/HttpSession.html#removeAttribute(java.lang.String)"><CODE>removeAttribute(java.lang.String)</CODE></A></I>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>name</CODE> - the name of the object to
remove from this session<DT><B>Throws:</B><DD><CODE>java.lang.IllegalStateException</CODE> - if this method is called on an
invalidated session</DL>
</DD>
</DL>
<HR>
<A NAME="invalidate()"><!-- --></A><H3>
invalidate</H3>
<PRE>
public void <B>invalidate</B>()</PRE>
<DL>
<DD>Invalidates this session then unbinds any objects bound
to it.<DD><DL>
<DT><B>Throws:</B><DD><CODE>java.lang.IllegalStateException</CODE> - if this method is called on an
already invalidated session</DL>
</DD>
</DL>
<HR>
<A NAME="isNew()"><!-- --></A><H3>
isNew</H3>
<PRE>
public boolean <B>isNew</B>()</PRE>
<DL>
<DD>Returns <code>true</code> if the client does not yet know about the
session or if the client chooses not to join the session. For
example, if the server used only cookie-based sessions, and
the client had disabled the use of cookies, then a session would
be new on each request.<DD><DL>
<DT><B>Returns:</B><DD><code>true</code> if the
server has created a session,
but the client has not yet joined<DT><B>Throws:</B><DD><CODE>java.lang.IllegalStateException</CODE> - if this method is called on an
already invalidated session</DL>
</DD>
</DL>
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