How to know file size from bytes

Question

I have byte array, how to know file size ? (in JAVA)

File file = new File("patch");
file.length() // <--- it's good, but I haven't original file... (( I get file in bytes from DataBase !

Thanks

for formatting, look at this: http://stackoverflow.com/questions/3263892/format-file-size-as-mb-gb-etc — tom, Dec 22 '13 at 18:51

score 9 · Accepted Answer · edited Dec 22 '13 at 18:51

9

You have an array with you and every array has a length. That's it.

byteArray.length;

And

1kb = 1024 bytes

edited Dec 22 '13 at 18:51

Sibbo

answered Dec 22 '13 at 18:41

Suresh Atta

But I want to know size in Kb – Vitaliy Dec 22 '13 at 18:44
You need formula to convert bytes to kilobytes ? :) – Suresh Atta Dec 22 '13 at 18:44
9

@Vitaliy This is like "You gave me the mass in grams, but I need kg!" – Ingo Dec 22 '13 at 18:45
Except 1kg = 1000g but in bytes it's actually 1kb = 1024b – Alex Scott May 26 '22 at 08:17

1 Answers1