If you pass a file path string as the first parameter to SAXParser.parse, the file path cannot contain any embedded spaces. Instead, create a FileInputStream object associated with the file path, and pass that object to SAXParser.parse:

// If the first argument to parse is a filename with embedded spaces, an exception will be thrown. The solution is to
// use a FileInputStream instead of a file path.
SAXParser saxParser = saxParserFactory.newSAXParser();
ImportDefaultHandler importDefaultHandler = new ImportDefaultHandler();

FileInputStream inputStream = new FileInputStream(filePath);
saxParser.parse(inputStream, importDefaultHandler);