I am not 100% sure, but maybe this helps you.
Presume you have an XML like this
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<root>
<myElement> </myElement>
</root>
As you didn't tell what you're using, I made an example in SAX. Just be aware that is not the fastest way if you have a huge XML to read.
public class Test {
public static void main(String[] args) throws ParserConfigurationException, SAXException, IOException {
DefaultHandler myHandler = new MyHandler();
SAXParserFactory factory = SAXParserFactory.newInstance();
SAXParser parser = factory.newSAXParser();
parser.parse(new File("empty.xml"), myHandler);
}
}
The HandlerClass for your Callbacks:
public class MyHandler extends DefaultHandler {
private boolean isEmpty = false;
private String fewSpace;
@Override
public void endElement(String uri, String localName, String qName) throws SAXException {
if (this.isEmpty) {
this.fewSpace = " ";
System.out.println(qName + this.fewSpace + " :)");
this.isEmpty = false;
}
}
@Override
public void characters(char[] buffer, int offset, int length) throws SAXException {
String s = new String(buffer, offset, length);
if (s.matches("\\s {1,}")) {
System.out.println("This Element has empty String");
this.isEmpty = true;
}
}
}