# Class FilterDef

java.lang.Object
org.apache.tomcat.util.descriptor.web.FilterDef

All Implemented Interfaces:
  `Serializable`

public class FilterDef extends Object implements Serializable
Representation of a filter definition for a web application, as represented in a `<filter>` element in the deployment descriptor.

See Also:
  - Serialized Form

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `FilterDef()`
  Default constructor for FilterDef.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `void`
  `addInitParameter(String name, String value)`
  Add an initialization parameter to the set of parameters associated with this filter.
  `String`
  `getAsyncSupported()`
  Returns the async-supported setting for this filter.
  `boolean`
  `getAsyncSupportedBoolean()`
  Returns whether async processing is supported for this filter.
  `String`
  `getDescription()`
  Returns the description of this filter.
  `String`
  `getDisplayName()`
  Returns the display name of this filter.
  `Filter`
  `getFilter()`
  Returns the filter instance associated with this definition.
  `String`
  `getFilterClass()`
  Returns the fully qualified name of the Java class that implements this filter.
  `String`
  `getFilterName()`
  Returns the name of this filter.
  `String`
  `getLargeIcon()`
  Returns the large icon associated with this filter.
  `Map<String,String>`
  `getParameterMap()`
  Returns the set of initialization parameters for this filter, keyed by parameter name.
  `String`
  `getSmallIcon()`
  Returns the small icon associated with this filter.
  `void`
  `setAsyncSupported(String asyncSupported)`
  Sets the async-supported setting for this filter.
  `void`
  `setDescription(String description)`
  Sets the description of this filter.
  `void`
  `setDisplayName(String displayName)`
  Sets the display name of this filter.
  `void`
  `setFilter(Filter filter)`
  Sets the filter instance associated with this definition.
  `void`
  `setFilterClass(String filterClass)`
  Sets the fully qualified name of the Java class that implements this filter.
  `void`
  `setFilterName(String filterName)`
  Sets the name of this filter, which must be unique among the filters defined for a particular web application.
  `void`
  `setLargeIcon(String largeIcon)`
  Sets the large icon associated with this filter.
  `void`
  `setSmallIcon(String smallIcon)`
  Sets the small icon associated with this filter.
  `String`
  `toString()`
  Render a String representation of this object.

  ### Methods inherited from class Object

  `clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

- ## Constructor Details

  - ### FilterDef

    public FilterDef()
    Default constructor for FilterDef.

- ## Method Details

  - ### getDescription

    public String getDescription()
    Returns the description of this filter.
    Returns:
      The description

  - ### setDescription

    public void setDescription(String description)
    Sets the description of this filter.
    Parameters:
      `description` - The new description

  - ### getDisplayName

    public String getDisplayName()
    Returns the display name of this filter.
    Returns:
      The display name

  - ### setDisplayName

    public void setDisplayName(String displayName)
    Sets the display name of this filter.
    Parameters:
      `displayName` - The new display name

  - ### getFilter

    public Filter getFilter()
    Returns the filter instance associated with this definition.
    Returns:
      The filter instance

  - ### setFilter

    public void setFilter(Filter filter)
    Sets the filter instance associated with this definition.
    Parameters:
      `filter` - The filter instance

  - ### getFilterClass

    public String getFilterClass()
    Returns the fully qualified name of the Java class that implements this filter.
    Returns:
      The filter class name

  - ### setFilterClass

    public void setFilterClass(String filterClass)
    Sets the fully qualified name of the Java class that implements this filter.
    Parameters:
      `filterClass` - The filter class name

  - ### getFilterName

    public String getFilterName()
    Returns the name of this filter.
    Returns:
      The filter name

  - ### setFilterName

    public void setFilterName(String filterName)
    Sets the name of this filter, which must be unique among the filters defined for a particular web application.
    Parameters:
      `filterName` - The new filter name

  - ### getLargeIcon

    public String getLargeIcon()
    Returns the large icon associated with this filter.
    Returns:
      The large icon

  - ### setLargeIcon

    public void setLargeIcon(String largeIcon)
    Sets the large icon associated with this filter.
    Parameters:
      `largeIcon` - The new large icon

  - ### getParameterMap

    public Map<String,String> getParameterMap()
    Returns the set of initialization parameters for this filter, keyed by parameter name.
    Returns:
      The initialization parameter map

  - ### getSmallIcon

    public String getSmallIcon()
    Returns the small icon associated with this filter.
    Returns:
      The small icon

  - ### setSmallIcon

    public void setSmallIcon(String smallIcon)
    Sets the small icon associated with this filter.
    Parameters:
      `smallIcon` - The new small icon

  - ### getAsyncSupported

    public String getAsyncSupported()
    Returns the async-supported setting for this filter.
    Returns:
      The async-supported value

  - ### setAsyncSupported

    public void setAsyncSupported(String asyncSupported)
    Sets the async-supported setting for this filter.
    Parameters:
      `asyncSupported` - The async-supported value

  - ### getAsyncSupportedBoolean

    public boolean getAsyncSupportedBoolean()
    Returns whether async processing is supported for this filter.
    Returns:
      True if async is supported, false otherwise

  - ### addInitParameter

    public void addInitParameter(String name, String value)
    Add an initialization parameter to the set of parameters associated with this filter.
    Parameters:
      `name` - The initialization parameter name
      `value` - The initialization parameter value

  - ### toString

    public String toString()
    Render a String representation of this object.
    Overrides:
      `toString` in class `Object`