What’s an efficient way of splitting a String into chunks of 1024 bytes in java? If there is more than one chunk then the header(fixed size string) needs to be repeated in all subsequent chunks.
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What’s an efficient way of splitting a String into chunks of 1024 bytes in java? If there is more than one chunk then the header(fixed size string) needs to be repeated in all subsequent chunks.
Strings and bytes are two completely different things, so wanting to split a String into bytes is as meaningless as wanting to split a painting into verses.
What is it that you actually want to do?
To convert between strings and bytes, you need to specify an encoding that can encode all the characters in the String. Depending on the encoding and the characters, some of them may span more than one byte.
You can either split the String into chunks of 1024 characters and encode those as bytes, but then each chunk may be more than 1024 bytes.
Or you can encode the original string into bytes and then split them into chunks of 1024, but then you have to make sure to append them as bytes before decoding the whole into a String again, or you may get garbled characters at the split points when a character spans more than 1 byte.
If you’re worried about memory usage when the String can be very long, you should use streams (java.io package) to to the en/decoding and splitting, in order to avoid keeping the data in memory several times as copies. Ideally, you should avoid having the original String in one piece at all and instead use streams to read it in small chunks from wherever you get it from.