Bug 11546 Progress bar gets cleared during project creation
IMPORTANT: Start a new empty workspace Start to create a Java project Enter "JUnit" as name Press "Finish" ==> Progress bar goes to right, then gets cleared and user has to wait without knowing what's going to happen.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/wizards/NewTypeWizardPage.java
* </p>
	 * 
	 * @return the status of the validation
	 */
	protected IStatus superInterfacesChanged() {
		StatusInfo status= new StatusInfo();
		
		IPackageFragmentRoot root= getPackageFragmentRoot();
		fSuperInterfacesDialogField.enableButton(0, root != null);
						
		if (root != null) {
			List elements= fSuperInterfacesDialogField.getElements();
			int nElements= elements.size();
			for (int i= 0; i < nElements; i++) {
				String intfname= (String)elements.get(i);
				try {
					IType type= root.getJavaProject().findType(intfname);
					if (type == null) {
						status.setWarning(NewWizardMessages.getFormattedString("NewTypeWizardPage.warning.InterfaceNotExists", intfname)); 
						return status;
					} else {
						if (type.isClass()) {
							status.setWarning(NewWizardMessages.getFormattedString("NewTypeWizardPage.warning.InterfaceIsNotInterface", intfname)); 
							return status;
						}
						if (!JavaModelUtil.isVisible(type, getPackageFragment())) {
							status.setWarning(NewWizardMessages.getFormattedString("NewTypeWizardPage.warning.InterfaceIsNotVisible", intfname)); 
							return status;
						}
					}