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What methods of session object is used frequently in JSP and for what purpose?
Here is a summary of important methods available through the session object −
| Sr.No. | Method & Description |
|---|---|
| 1 | public Object getAttribute(String name) This method returns the object bound with the specified name in this session, or null if no object is bound under the name. |
| 2 | public Enumeration getAttributeNames() This method returns an Enumeration of String objects containing the names of all the objects bound to this session. |
| 3 | public long getCreationTime() This method returns the time when this session was created, measured in milliseconds since midnight January 1, 1970 GMT. |
| 4 | public String getId() This method returns a string containing the unique identifier assigned to this session. |
| 5 | public long getLastAccessedTime() This method returns the last time the client sent a request associated with the this session, as the number of milliseconds since midnight January 1, 1970 GMT. |
| 6 | public int getMaxInactiveInterval() This method returns the maximum time interval, in seconds, that the servlet container will keep this session open between client accesses. |
| 7 | public void invalidate() This method invalidates this session and unbinds any objects bound to it. |
| 8 | public boolean isNew() This method returns true if the client does not yet know about the session or if the client chooses not to join the session. |
| 9 | public void removeAttribute(String name) This method removes the object bound with the specified name from this session. |
| 10 | public void setAttribute(String name, Object value) This method binds an object to this session, using the name specified. |
| 11 | public void setMaxInactiveInterval(int interval) This method specifies the time, in seconds, between client requests before the servlet container will invalidate this session. |
Updated on: 30-Jul-2019
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