The Servlet API
As
name states, this contains the API to develop Servlet
- Below are two packages that are required to build servlets.
- javax.se rvlet
- javax.servlet.http
The Servlet API is supported by most Web servers
- javax.servlet : Package contains many interfaces and classes that a re-used by the servlet or web container. These are not specific to any protocol
- javax.servlet.http : Package contains interfaces and classes that are responsible for http requests only
javax.Servlet Package
Package
contains many interfaces and classes that support servlet to run. Lets see
important Interfaces and Classes under this package
Interfaces of javax.servlet package
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Servlet
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Defines the life cycle methods of a servlet
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ServletRequest
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Used to read data from client request
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ServletResponse
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Used to write data to a client response
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ServletConfig
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Allows servlet to get initialization parameters
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UnavailableException
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Allows servlet to access information about env
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RequestDispatcher
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Able to dispatch request from client to any resource on
server.
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GenericServlet
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Implements Servlet, ServletConfig and Serializable
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ServletlnputStream
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Provides an input stream for reading requests from a
client.
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ServletOutputStream
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Provides an output stream for writing requests to a
client.
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ServletException
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Indicates a servlet error occurred.
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Unavailable Exception
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Indicates a servlet is unavailable
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ServletRequestWrapper
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Creates a ServletRequest adaptor wrapping request object
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ServletResponseWrapper
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Creates a ServletResponse adaptor wrapping request object
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The above stated
list are only important interfaces of package.
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