This question already has answers here:
How to convert byte[] to Byte[] and the other way around?
(9 answers)
Closed 3 years ago.
I want to convert a Byte array into a byte array, but I don't see any way to do so in java without using a loop.
Can someone please tell me a way to make it ?
There is no need for that, because Java has an auto-unboxing system that automatically converts Bytes to bytes. So, you can use them the same way. But if you really have to, you have to use a loop.
Related
This question already has answers here:
Fastest way to set all values of an array?
(14 answers)
How do I declare and initialize an array in Java?
(31 answers)
Closed 2 years ago.
I have a byte array I want to set to a set X amount of bytes, but I want to initialize it first then assign bytes to it later, index by index.
What should I do? So far I've been just creating a byte array of X bytes, all just filled with FF to make things simple but I feel like this is not the best way.
Thanks
edit: Would the best way just be
byte[] bArr = new byte[X];
??
This question already has answers here:
Why is String.chars() a stream of ints in Java 8?
(2 answers)
Want to create a stream of characters from char array in java
(10 answers)
Closed 4 years ago.
Why Java 8 does not have StringStream and CharStream.
StringStream.of("String1","String2");
StringStream.concat(stream1,stream2);
StringStream.builder().add("String1").add("string2").accept("string3");
There is no char stream for same reason there is no byte stream. All those specific stream added for optimization (no boxing/unboxing). char and byte internally represented as int so there will be no profit in adding them.
Of course they should add them for convenience, but they didn't.
There is no String stream because there is no reason for it. String is reference type, so normal stream will work with it just fine.
This question already has answers here:
How do you convert a byte array to a hexadecimal string, and vice versa?
(53 answers)
Closed 4 years ago.
I am looking for a way or multiple ways (Always good to know many ways) how to convert Text (String) to HexaDecimal like this http://codebeautify.org/string-hex-converter
Any help would be appreciated.
I've been looking for hours around different places and I have so far found no code that could potentionally do this for me.
All the ways that this could be done is accepted, I love learning about coding.
String to Hex:
Integer.decode(hexString);
Hex to String:
Integer.toHexString(integer);
This question already has answers here:
Java Serializable Object to Byte Array
(12 answers)
Closed 8 years ago.
I have requirement where i want to store Hash Set i have to byte[] in database. I have searched through internet haven't found a solution.
I have following hashset of custom class.
HashSet<MyClass> set = new HashSet<MyClass>();
Please help.
You can serialize it, if the stored data is serializable. Then convert to bytes.
This question already has answers here:
Guessing the encoding of text represented as byte[] in Java
(7 answers)
Closed 8 years ago.
I'm receiving a byte[] of information in an unspecified encoding format. Is there a way to convert it to a String without knowing the character encoding?
The tool of choice is CharsetMatch from ICU: http://userguide.icu-project.org/conversion/detection
It is not an exact science, so there is a confidence score that you have to watch and it will take some experimentation, but will definitely get you where you want to go. Good Luck!