About this task
The UserWorkArea interface provides the retrieveAllKeys method for
retrieving a list of all the keys visible from a work area. This method takes
no arguments and returns an array of strings. The retrieveAllKeys method returns
null if there is no work area associated with the thread. If there is an associated
work area that does not contain any properties, the method returns an array
of size 0.
For additional information about work area, see the com.ibm.websphere.workarea
package in the API documentation. The generated API documentation is available
in the information center table of contents from the path .