Package jakarta.servlet

Interface FilterConfig

All Known Implementing Classes:

GenericFilter, HttpFilter

public interface FilterConfig

A filter configuration object used by a servlet container to pass information to a filter during initialization.

Since:

Servlet 2.3

See Also:

• Filter

Method Summary

Modifier and Type	Method	Description
String	getFilterName()	Returns the filter-name of this filter as defined in the deployment descriptor.
String	getInitParameter(String name)	Returns a String containing the value of the named initialization parameter, or null if the initialization parameter does not exist.
Enumeration<String>	getInitParameterNames()	Returns the names of the filter's initialization parameters as an Enumeration of String objects, or an empty Enumeration if the filter has no initialization parameters.
ServletContext	getServletContext()	Returns a reference to the ServletContext in which the caller is executing.

Method Details

getFilterName

String getFilterName()

Returns the filter-name of this filter as defined in the deployment descriptor.

Returns:

the filter name of this filter

getServletContext

ServletContext getServletContext()

Returns a reference to the ServletContext in which the caller is executing.

Returns:

a ServletContext object, used by the caller to interact with its servlet container

See Also:

• ServletContext

getInitParameter

String getInitParameter(String name)

Returns a String containing the value of the named initialization parameter, or null if the initialization parameter does not exist.

Parameters:

name - a String specifying the name of the initialization parameter

Returns:

a String containing the value of the initialization parameter, or null if the initialization parameter does not exist

getInitParameterNames

Enumeration<String> getInitParameterNames()

Returns the names of the filter's initialization parameters as an Enumeration of String objects, or an empty Enumeration if the filter has no initialization parameters.

Returns:

an Enumeration of String objects containing the names of the filter's initialization parameters