Bug 51608 project creation wizard: add folder button lets one add existing folder the first time
M7 test pass, I200402102000 1. Create a new java project 2. configure using src and bin folders 3. on the second page, press "add folder" 4. enter "src" as the folder name into the mask -> there is no complaint about the added folder, although it already existed -> when pressing "add folder" a second time, a different dialog comes up, allowing to specify where to add a new folder. Entering an existing folder name here gets flagged as an error. -> it seems that although there is an entry for the preconfigured "src" folder, it does not yet exist really.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/JavaProjectWizardSecondPage.java
}
		};
	
		try {
			getContainer().run(false, true, op);
		} catch (InvocationTargetException e) {
			final String title= NewWizardMessages.getString("JavaProjectWizardSecondPage.error.title"); 
			final String message= NewWizardMessages.getString("JavaProjectWizardSecondPage.error.message"); 
			ExceptionHandler.handle(e, getShell(), title, message);
		} catch  (InterruptedException e) {
			
		}
	}
	
	protected void updateProject(boolean initialize, IProgressMonitor monitor) throws CoreException {
		
		fCurrProject= fFirstPage.getProjectHandle();
		fCurrProjectLocation= fFirstPage.getLocationPath();
		
		final boolean noProgressMonitor= !initialize && !fFirstPage.getDetect();
		
		if (monitor == null || noProgressMonitor ) {
			monitor= new NullProgressMonitor();
		}
		try {
			monitor.beginTask(NewWizardMessages.getString("JavaProjectWizardSecondPage.operation.initialize"), 2); 
			
			createProject(fCurrProject, fCurrProjectLocation, new SubProgressMonitor(monitor, 1));
			if (initialize) {