That the arguments of the startelement () method in the SAX parser are related to

public void startElement(String uri, String localName, String qName,
            Attributes attributes)

Can anyone give a simple example of how a local name differs from qName and what is a uri string? And yes, before anyone asks, I checked it on the network, but no one wanted to mention the difference, as some examples used qName, while others used a local name that really confuses me.