I have a question which make me think about how to improve speed and memory of system. I will describe it by example, I have this file which have some string:
<e>Customer</e>
<a1>Customer Id</a1>
<a2>Customer Name</a2>
<e>Person</e>
It similar to xml file.
Now, my solution is when I read <e>Customer</e>, I will read from that to a nearest tag and then, substring from <e>Customer</e> to a nearest tag.
It make the system need to process so much. I used only regular expression to do it. I thought I will do the same as real compiler which have some phases (lexical analysis, parser).
Any ideas?
If you really don't want to use one of the free and reliable xml parsers then a truly fast solution will almost certainly involve a state machine.
See this How to create a simple state machine in java question for a good start.
Please be sure to have a very good reason for taking this route.