[Solved] How to know what child is belonging to their parent?

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You have an XML-file and you want to read it with a Java-program. You could either go through hell and write your own program to read XML-files, or you use already existing packages for that, for example the SAX-library.

To use SAX-parser use these import-statements:

import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

You have to create a SAX-parser from a SAXParserFactory. The factory itself is created with a static factory-method.

SAXParserFactory f = SAXParserFactory.newInstance();
SAXParser parser = factory.newSAXParser();

You use parser to read the XML-file and give the output to DefaultHandler. Everything is handled by DefaultHandler so there is where your code goes.

Documentation of DefaultHandler

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solved How to know what child is belonging to their parent?