The Locator interface

• Tells the callback class where in the document (line number, column number) a particular event took place

• Optional but recommended

• Parsers give the callback class a Locator by passing it to the setDocumentLocator() method of ContentHandler

• The Locator interface:

  package org.xml.sax;
  
  public interface Locator {
      
    public String getPublicId();
    public String getSystemId();
    public int    getLineNumber();
    public int    getColumnNumber();
      
  }