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Originally posted by somkiat puisungnoen:
I think , HashMap and HashTable are have overhead very much,
I'm away use properties file , so i retrive all data from properties file only first call.
And properties file is flexible for your code. (If you want to add new data, you not recompile your code)
Co-author of SCMAD Exam Guide, Author of JMADPlus
SCJP1.2, CCNA, SCWCD1.4, SCBCD1.3, SCMAD1.0, SCJA1.0, SCJP6.0
I think , HashMap and HashTable are have overhead very much
Such as?
That's what the trade-offs between I/O access and Heap object on-the-fly... As I mentioned before, if we do not need to store and retrieve the data to and from a file, I believe that objects on-the fly like Hashtable and HashMap would be better in performance than using properties...
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Originally posted by Nicholas Cheung:
In fact, there are not much difference between Property object and HashMap because they use similar data structure.
Once you read in the data from the property files, the I/O issues gone.
Co-author of SCMAD Exam Guide, Author of JMADPlus
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Originally posted by Pradeep Bhat:
You cannot update Properties but you can do that using HashMap.
Co-author of SCMAD Exam Guide, Author of JMADPlus
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You cannot update Properties but you can do that using HashMap.
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if we do not need to store in the persistent storage like file, I prefer HashMap
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Originally posted by Nicholas Cheung:
But defintely we needed. Otherwise, we may need to hardcode all things inside the program. If we dont wanna hardcode something, the data must be obtained by somewhere, from file, from URL, or other systems. But each of which is regarded as an I/O.
Nick
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42
Originally posted by Pradeep Bhat:
Nick you are right that Properties can be updated.
I am going to
The method setProperty could be used to update the property, it actually calls the put method of Hashmap.
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Originally posted by Sonny Gill:
It looks like using Properties might confuse somebody trying to maintain the code later.
Co-author of SCMAD Exam Guide, Author of JMADPlus
SCJP1.2, CCNA, SCWCD1.4, SCBCD1.3, SCMAD1.0, SCJA1.0, SCJP6.0
Originally posted by Pradeep Bhat:
It would be better than C++ in terms of performance.
Co-author of SCMAD Exam Guide, Author of JMADPlus
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