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## org.apache.tools.ant
Interface SubBuildListener

All Superinterfaces:
  BuildListener, java.util.EventListener

All Known Implementing Classes:
  AntClassLoader, AntClassLoader2, BigProjectLogger, Recorder, RecorderEntry

    public interface SubBuildListener

extends BuildListener

Instances of classes that implement this interface can register to be also notified when things happened during a subbuild.

A subbuild is a separate project instance created by the `<ant>` task family. These project instances will never fire the buildStarted and buildFinished events, but they will fire subBuildStarted/ and subBuildFinished. The main project instance - the one created by running Ant in the first place - will never invoke one of the methods of this interface.

Since:
  Ant 1.6.2
See Also:
  `BuildEvent`, `Project.addBuildListener(BuildListener)`

Method Summary
`void` | `subBuildFinished(BuildEvent event)` Signals that the last target has finished.
`void` | `subBuildStarted(BuildEvent event)` Signals that a subbuild has started.

Methods inherited from interface org.apache.tools.ant.BuildListener
`buildFinished, buildStarted, messageLogged, targetFinished, targetStarted, taskFinished, taskStarted`

Method Detail

### subBuildStarted

    void subBuildStarted(BuildEvent event)

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

  Parameters:
    `event` - An event with any relevant extra information. Must not be `null`.

### subBuildFinished

    void subBuildFinished(BuildEvent event)

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

  Parameters:
    `event` - An event with any relevant extra information. Must not be `null`.
  See Also:
    `BuildEvent.getException()`

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