How do I format and read XML processing instructions using Java StAX?

Question

First, how do I format the XML processing instruction, is it:

Usi

Answer 1

Although Dimitre's answer is technically correct, a few popular libraries now parse processing instruction pseudo-attributes as would be expected. The subsequent examples parse the following XML processing instruction to obtain the value for the href pseduo-attribute:

JDOM2

Using JDOM2:

import org.jdom2.ProcessingInstruction;
import org.xml.sax.helpers.DefaultHandler;

public class ProcessingInstructionHandler extends DefaultHandler {

  @Override
  public void processingInstruction( final String target, final String data ) {
    final ProcessingInstruction pi = new ProcessingInstruction( target, data );
    System.out.println( pi.getPseudoAttributeValue( "href" ) );
  }
}

Saxon

Using Saxon:

import static net.sf.saxon.tree.util.ProcInstParser.getPseudoAttribute;
import org.xml.sax.helpers.DefaultHandler;

public class ProcessingInstructionHandler extends DefaultHandler {

  @Override
  public void processingInstruction( final String target, final String data ) {
    System.out.println( getPseudoAttribute( data, "href" ) );
  }
}