// The path to the documents directory.
String dataDir = Utils.getSharedDataDir(GetWarningLoadingAnExcel.class) + "loading_saving/";
		
//Create load options and set the WarningCallback property 
//to catch warnings while loading workbook
LoadOptions options = new LoadOptions();
options.setWarningCallback(new WarningCallback());
		              
//Load the source excel file
Workbook book = new Workbook(dataDir + "sampleDuplicateDefinedName.xlsx", options);
		  
//Save the workbook 
book.save(dataDir + "outputDuplicateDefinedName.xlsx");