How to use

JavaSourceLookupDirector

in

org.eclipse.jdt.internal.launching

@Override
public void initializeParticipants() {
  addParticipants(new ISourceLookupParticipant[] {new JavaSourceLookupParticipant()});
}
/* (non-Javadoc)

protected void setSourceLocator(ILaunch launch) throws CoreException {
  ILaunchConfiguration configuration = launch.getLaunchConfiguration();
  if (launch.getSourceLocator() == null) {
    ISourceLookupDirector sourceLocator = new JavaSourceLookupDirector();
    ISourcePathComputer locator = getLaunchManager().getSourcePathComputer(SOURCE_LOCATOR);
    if (locator != null) {
      sourceLocator.setSourcePathComputer(locator); //$NON-NLS-1$
      sourceLocator.initializeDefaults(configuration);
      launch.setSourceLocator(sourceLocator);
    }
  }
}

ISourceLookupDirector sourceDir = new JavaSourceLookupDirector();
ILaunchConfigurationWorkingCopy workCopy = configuration.getWorkingCopy();
String initMemento = workCopy.getAttribute(

/**
 * Assigns a default source locator to the given launch if a source locator
 * has not yet been assigned to it, and the associated launch configuration
 * does not specify a source locator.
 * 
 * @param launch
 *            launch object
 * @param configuration
 *            configuration being launched
 * @exception CoreException
 *                if unable to set the source locator
 */
protected void setDefaultSourceLocator(ILaunch launch,
    ILaunchConfiguration configuration) throws CoreException {
  //  set default source locator if none specified
  if (launch.getSourceLocator() == null) {
    ISourceLookupDirector sourceLocator = new JavaSourceLookupDirector();
    sourceLocator
        .setSourcePathComputer(getLaunchManager()
            .getSourcePathComputer(
                "org.eclipse.jdt.launching.sourceLookup.javaSourcePathComputer")); //$NON-NLS-1$
    sourceLocator.initializeDefaults(configuration);
    launch.setSourceLocator(sourceLocator);
  }
}
/**

@Override
public void initializeParticipants() {
  addParticipants(new ISourceLookupParticipant[] {new JavaSourceLookupParticipant()});
}
/* (non-Javadoc)

/**
 * Assigns a default source locator to the given launch if a source locator
 * has not yet been assigned to it, and the associated launch configuration
 * does not specify a source locator.
 *
 * @param launch
 *            launch object
 * @param configuration
 *            configuration being launched
 * @exception CoreException
 *                if unable to set the source locator
 */
protected void setDefaultSourceLocator(ILaunch launch,
    ILaunchConfiguration configuration) throws CoreException {
  //  set default source locator if none specified
  if (launch.getSourceLocator() == null) {
    ISourceLookupDirector sourceLocator = new JavaSourceLookupDirector();
    sourceLocator
        .setSourcePathComputer(getLaunchManager()
            .getSourcePathComputer(
                "org.eclipse.jdt.launching.sourceLookup.javaSourcePathComputer")); //$NON-NLS-1$
    sourceLocator.initializeDefaults(configuration);
    launch.setSourceLocator(sourceLocator);
  }
}
/**