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String bytes manipulation

Gustavo Berndorfer Goldhardt
Greenhorn

Joined: Nov 16, 2009
Posts: 6
Hello there,

Someone could help me doing the following operation:

I have a String(a big one), and I need to "split" this String in smaller Strings of 50 bytes each, and put all these 50 bytes Strings into an ArrayList.

Thank you guys!!
Joe Ess
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Joined: Oct 29, 2001
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Gustavo Berndorfer Goldhardt
Greenhorn

Joined: Nov 16, 2009
Posts: 6
I'm new in Java, and I have just a little experience in String manipulation. This is a quick problem to solve if you are a Java expert or at least have a considerable experience in it, but if you are a newbie(like me) this is an extremelly hard operation. I not asking you to solve the problem for me, but if you can point me a solution, or even indicate examples in manipulating bytes of a String. But if you have the algoritihm, I would be very happy if you share it with me and the other newbies in this community...

Thank you very much!

Gustavo Berndorfer Goldhardt
Greenhorn

Joined: Nov 16, 2009
Posts: 6
And yes, I tryed to solve the problem myself... But I'm getting lost and confused when I need to manipulate bytes instead of characters.
Edwin Dalorzo
Ranch Hand

Joined: Dec 31, 2004
Posts: 961
Let me see if I understand this, in the ArrayList you will store Strings of around 50 bytes, correct?

You must know that in Java, String may contain characters in different encodings (i.e ASCII, UTF-8, UTF-16, etc, etc, etc).

Therefore, the binary representation of the String characters could vary depending on the enconding. If your encoding is ASCII then in binary form most probably every byte would correspond to a character, but the same cannot be said of all other encodings. Also, it is important to highligh that the number of bytes required to store the characters of a String in particular enconding has nothing to do with the size in bytes of a String object if serialized.

That being said, in what encoding should your strings fit in 50 bytes chunks?

I ask this because spliting the string based on bytes might leave you with a chuck of bytes that has not sense in particular encoding.
 
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