November 2002
Intermediate to advanced
1120 pages
21h 2m
English
Content preview from Processing XML with Java™: A Guide to SAX, DOM, JDOM, JAXP, and TrAXBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Receiving Locators
For debugging purposes, it's often useful to know exactly where a particular element or other item appears. To provide this information, parsers should (but are not required to) implement the Locator interface. A Locator object knows at which point in which file the latest event was fired.
Example 6.15 summarizes the Locator interface. Notice that it offers both public and system identifiers for the entity in which the start-tag/end-tag/processing instruction/skipped entity/etc. was found. Furthermore it tells you approximately at which line and column in that line the item begins. Lines and columns both begin at 1. If this information is unavailable for some reason (most commonly the result of a well-formedness error very ...
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