Byte length of string in different character sets

Question

I need to find out the length of a string for different character sets in Java. Assuming that I have 160 characters and the ASCII character set, the byte length should be 140. Similarly I need for other character set also.

I may get an input stream in any of the character set, but once received it will be stored in UTF-16 and subsequently I will not be able to get the exact byte length of original character set.

You could convert it to bytes and just invoke .length?

hd1
– hd1

2014-09-04 07:24:27 +00:00
Commented Sep 4, 2014 at 7:24 — hd1
– hd1, Commented Sep 4, 2014 at 7:24
There you are, @Duncan

hd1
– hd1

2014-09-04 07:44:13 +00:00
Commented Sep 4, 2014 at 7:44 — hd1
– hd1, Commented Sep 4, 2014 at 7:44

Community · Accepted Answer · 2017-05-23 12:05:48Z

1

Refer to this answer to convert the String to bytes (tl;dr use .getBytes()) and then invoke the .length property to get the number of bytes in the String.

edited May 23, 2017 at 12:05

CommunityBot

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answered Sep 4, 2014 at 7:43

hd1

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Comments

Mullainathan Subramanian · Accepted Answer · 2014-09-09 04:57:46Z

0

Above solution is not suitable for handling 7 bit ASCII character set or UTF-7 . In UTF-7 every characters in the stream represented in 7 bits not 8 bits. so we can send 160 characters in 140 bytes using UTF-7 Character Encoding . But while using getBytes("UTF-7").length function on inputString of 160 characters we get 160 Bytes instead of 140 Bytes.

answered Sep 9, 2014 at 4:57

Mullainathan Subramanian

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