Implicit objects in jsp are the objects that are created by the container automatically, we do not need to create them explicitly. Since these objects are created automatically therefore these are known as the implicit objects. Implicit objects are used for different purposes. Our own methods (user defined methods) can't access them as they are local to the service method and are created at the conversion time of a jsp into a servlet. But we can pass them to our own method if we wish to use them locally in those functions.

For more information, visit the following link:

http://www.roseindia.net/help/java/o/jsp-implicit-objects.shtml