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## org.apache.tools.ant.listener
Class Log4jListener

    java.lang.Object
      org.apache.tools.ant.listener.Log4jListener

All Implemented Interfaces:
  java.util.EventListener, BuildListener

    public class Log4jListener

extends java.lang.Object
implements BuildListener

Listener which sends events to Log4j logging system

Field Summary
`static java.lang.String` | `LOG_ANT` log category we log into

Constructor Summary
`Log4jListener()` Construct the listener and make sure there is a valid appender.

Method Summary
`void` | `buildFinished(BuildEvent event)` Signals that the last target has finished.
`void` | `buildStarted(BuildEvent event)` Signals that a build has started.
`void` | `messageLogged(BuildEvent event)` Signals a message logging event.
`void` | `targetFinished(BuildEvent event)` Signals that a target has finished.
`void` | `targetStarted(BuildEvent event)` Signals that a target is starting.
`void` | `taskFinished(BuildEvent event)` Signals that a task has finished.
`void` | `taskStarted(BuildEvent event)` Signals that a task is starting.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### LOG_ANT

    public static final java.lang.String LOG_ANT

  log category we log into

  See Also:
    Constant Field Values

Constructor Detail

### Log4jListener

    public Log4jListener()

  Construct the listener and make sure there is a valid appender.

Method Detail

### buildStarted

    public void buildStarted(BuildEvent event)

  Signals that a build has started. This event is fired before any targets have started..

  Specified by:
    `buildStarted` in interface `BuildListener`
  Parameters:
    `event` - An event with any relevant extra information. Must not be `null`.

### buildFinished

    public void buildFinished(BuildEvent event)

  Signals that the last target has finished. This event will still be fired if an error occurred during the build..

  Specified by:
    `buildFinished` in interface `BuildListener`
  Parameters:
    `event` - An event with any relevant extra information. Must not be `null`.
  See Also:
    `BuildEvent.getException()`

### targetStarted

    public void targetStarted(BuildEvent event)

  Signals that a target is starting..

  Specified by:
    `targetStarted` in interface `BuildListener`
  Parameters:
    `event` - An event with any relevant extra information. Must not be `null`.
  See Also:
    `BuildEvent.getTarget()`

### targetFinished

    public void targetFinished(BuildEvent event)

  Signals that a target has finished. This event will still be fired if an error occurred during the build..

  Specified by:
    `targetFinished` in interface `BuildListener`
  Parameters:
    `event` - An event with any relevant extra information. Must not be `null`.
  See Also:
    `BuildEvent.getException()`

### taskStarted

    public void taskStarted(BuildEvent event)

  Signals that a task is starting..

  Specified by:
    `taskStarted` in interface `BuildListener`
  Parameters:
    `event` - An event with any relevant extra information. Must not be `null`.
  See Also:
    `BuildEvent.getTask()`

### taskFinished

    public void taskFinished(BuildEvent event)

  Signals that a task has finished. This event will still be fired if an error occurred during the build..

  Specified by:
    `taskFinished` in interface `BuildListener`
  Parameters:
    `event` - An event with any relevant extra information. Must not be `null`.
  See Also:
    `BuildEvent.getException()`

### messageLogged

    public void messageLogged(BuildEvent event)

  Signals a message logging event..

  Specified by:
    `messageLogged` in interface `BuildListener`
  Parameters:
    `event` - An event with any relevant extra information. Must not be `null`.
  See Also:
    `BuildEvent.getMessage()`, `BuildEvent.getException()`, `BuildEvent.getPriority()`

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