XML Menu

DOM vs SAX Parser

DOM Parser

Features Of DOM Parser

The internal structure can be created by DOM Parser.
Because of these internal structures, the client can get information about the original XML docs.

Advantages Of DOM Parser

DOM API is easy to use so that we can do both write and read operations.
When a document is required then it preferred a wide part that can be randomly accessed.

Disadvantages Of DOM Parser

Its efficiency of memory is not too good, it takes more memory cause XML docs needed to load in there.
In comparison to the SAX parser, it is too slow.

SAX Parser

Features Of SAX Parser

The internal structure can not be created by SAX Parser.
These event-based SAX parsers work the same as the event handler in Java.

Advantages Of SAX Parser

Very simple to use and has good efficiency of memory.
Its runtime is too fast and it can work for a bigger document or file system.

Disadvantages Of SAX Parser

Its ability to understand APIs is too less than an event-based API.
We can’t know the full information because of a lot of pieces of data.

Differences between SAX Parser and DOM Parser in Java

DOM Parser	SAX Parser
It is called as Document Object Model.	It is called a Simple API for XML Parsing.
It stays in a tree structure.	It’s an event-based parser.
DOM Parser is faster than SAX Parser.	SAX Parser is slower than DOM Parser.
Best for the smaller size of files.	Best for the larger sizes of files.
It is not good at making XML files in low memory.	It is suitable for making XML files in Java.
The internal structure can be created by DOM Parser.	The internal structure can not be created by SAX Parser.
It can insert or delete nodes.	It is read-only.
In DOM parser backward and forward search is possible	In the SAX parser backward navigation is not possible.
Suitable for large XML document.	Suitable for efficient memory.
It loads whole XML documents in memory.	A small part of the XML file is only loaded in memory.