if (snippet.length() == 0) return;
	public void evalSelection(final int resultMode) {		fResultMode= resultMode;				if (classPathHasChanged()) {			// need to relaunch VM		};					fVM = ScrapbookLauncher.getDefault().getDebugTarget(getPage());		if (fVM == null) {			launchVM();			fVM = ScrapbookLauncher.getDefault().getDebugTarget(getPage());		}		fireEvalStateChanged();		ITextSelection selection= (ITextSelection) getSelectionProvider().getSelection();		String snippet= selection.getText();		fSnippetStart= selection.getOffset();		fSnippetEnd= fSnippetStart + selection.getLength();				if (snippet.length() == 0)			return;		evaluationStarts();		evaluate(snippet);	}	