ServletContextEventSource (IBM WebSphere Application Server, Release 8.5)

```
public interface ServletContextEventSource
```
This event context is used to register listeners for various servlet context events. These events will be triggered by the servlet engine as appropriate during servlet processing. An implementation of this event context is available to all servlets as a ServletContext attribute by using the ServletContext.getAttribute() method.
Sample Usage (from within a servlet):
```
 ServletContextEventSource sces = (ServletContextEventSource)getServletContext().getAttribute(
                                 ServletContextEventSource.ATTRIBUTE_NAME);
 sces.addServletErrorListener(myErrorListener);
 
```

Field Summary

Fields
Modifier and Type Field and Description

static java.lang.String ATTRIBUTE_NAME
The ServletContext attribute name that the servlet context event source can be retrieved using.

Fields
Modifier and Type	Field and Description
`static java.lang.String`	`ATTRIBUTE_NAME` The ServletContext attribute name that the servlet context event source can be retrieved using.

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`addApplicationListener(ApplicationListener al)` Register a listener for application events.
`void`	`addFilterErrorListener(FilterErrorListener fil)` Register a listener for filter error events.
`void`	`addFilterInvocationListener(FilterInvocationListener fil)` Register a listener for filter invocation events.
`void`	`addFilterListener(FilterListener fil)` Register a listener for filter events.
`void`	`addServletErrorListener(ServletErrorListener sel)` Register a listener for servlet error events.
`void`	`addServletInvocationListener(ServletInvocationListener sil)` Register a listener for servlet invocation events.
`void`	`addServletListener(ServletListener sl)` Register a listener for servlet events.
`void`	`removeApplicationListener(ApplicationListener al)` Deregister a listener for application events.
`void`	`removeFilterErrorListener(FilterErrorListener fil)` Deregister a listener for filter error events.
`void`	`removeFilterInvocationListener(FilterInvocationListener fil)` Deregister a listener for filter invocation events.
`void`	`removeFilterListener(FilterListener fil)` Deregister a listener for filter events.
`void`	`removeServletErrorListener(ServletErrorListener sel)` Deregister a listener for servlet error events.
`void`	`removeServletInvocationListener(ServletInvocationListener sil)` Deregister a listener for servlet invocation events.
`void`	`removeServletListener(ServletListener sl)` Deregister a listener for servlet events.

- Field Detail
  - ATTRIBUTE_NAME
```
static final java.lang.String ATTRIBUTE_NAME
```
    The ServletContext attribute name that the servlet context event source can be retrieved using.
    
    See Also:
    Constant Field Values
- Method Detail
  - addApplicationListener
```
void addApplicationListener(ApplicationListener al)
```
    Register a listener for application events.
  - removeApplicationListener
```
void removeApplicationListener(ApplicationListener al)
```
    Deregister a listener for application events.
  - addServletInvocationListener
```
void addServletInvocationListener(ServletInvocationListener sil)
```
    Register a listener for servlet invocation events.
  - removeServletInvocationListener
```
void removeServletInvocationListener(ServletInvocationListener sil)
```
    Deregister a listener for servlet invocation events.
  - addServletErrorListener
```
void addServletErrorListener(ServletErrorListener sel)
```
    Register a listener for servlet error events.
  - removeServletErrorListener
```
void removeServletErrorListener(ServletErrorListener sel)
```
    Deregister a listener for servlet error events.
  - addServletListener
```
void addServletListener(ServletListener sl)
```
    Register a listener for servlet events.
  - removeServletListener
```
void removeServletListener(ServletListener sl)
```
    Deregister a listener for servlet events.
  - addFilterInvocationListener
```
void addFilterInvocationListener(FilterInvocationListener fil)
```
    Register a listener for filter invocation events.
  - removeFilterInvocationListener
```
void removeFilterInvocationListener(FilterInvocationListener fil)
```
    Deregister a listener for filter invocation events.
  - addFilterErrorListener
```
void addFilterErrorListener(FilterErrorListener fil)
```
    Register a listener for filter error events.
  - removeFilterErrorListener
```
void removeFilterErrorListener(FilterErrorListener fil)
```
    Deregister a listener for filter error events.
  - addFilterListener
```
void addFilterListener(FilterListener fil)
```
    Register a listener for filter events.
  - removeFilterListener
```
void removeFilterListener(FilterListener fil)
```
    Deregister a listener for filter events.

ATTRIBUTE_NAME

addApplicationListener

removeApplicationListener

addServletInvocationListener

removeServletInvocationListener

addServletErrorListener

removeServletErrorListener

addServletListener

removeServletListener

addFilterInvocationListener

removeFilterInvocationListener

addFilterErrorListener

removeFilterErrorListener

addFilterListener

removeFilterListener