How to pass a byte[] to this function

Question

I have a function with this signature:

void insert(T[] thearray);

And I have a byte array like this:

byte[] value = new byte[4096];

But if I call function like this:

cb.insert(value);

I get a error:

The method insert(Byte) in the type CircularBuffer<Byte> is not applicable for the arguments (byte[])

CircularBuffer is the class with the insert method.

I instantiate CircularBuffer like this:

CircularBuffer<Byte> cb = new CircularBuffer<Byte>(4096);

How can I pass the value to this insert function?

To be clear, the CircularBuffer class is declared like this:

public class CircularBuffer<T>

public CircularBuffer(int size) //ctor

More details if you need:

https://codereview.stackexchange.com/questions/22826/circular-buffer-implementation-for-buffering-tcp-socket-messages

EDIT in the end I decided for efficiency reasons to create a specialised ByteCircularBuffer. - using byte. This area of primitive type to object type, eg byte -> Byte is confusing.

score 6 · Answer 1 · edited May 23 '17 at 11:54

6

A byte[] is not a Byte[]. You will need to explicitly convert one to the other first.

See e.g. Cast ArrayList of wrappers to corresponding array of primitives for possible ways to do this.

edited May 23 '17 at 11:54

Community

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answered Feb 17 '13 at 17:31

Oliver Charlesworth

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I don't want to copy a possibly large array. I think the link copies. I also don't want to have to use a third party class. – Angus Comber Feb 17 '13 at 18:01
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@user619818: You don't really have a choice, other than modifying your CircularBuffer class. – Oliver Charlesworth Feb 17 '13 at 18:01
How would I modify CircularBuffer? – Angus Comber Feb 17 '13 at 18:05
@user619818: I don't know, I haven't looked at it! – Oliver Charlesworth Feb 17 '13 at 18:06

score 2 · Accepted Answer · answered Feb 17 '13 at 17:35

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Byte is quite different from byte. Either convert array of bytes to array of Bytes (this requires lot of time and memory), or write new class ByteCircularBuffer (take CircularBuffer<T> and replace T with byte).

answered Feb 17 '13 at 17:35

Alexei Kaigorodov

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I tried this: class ByteCircularBuffer extends CircularBuffer { } but then get errors: Multiple markers at this line. - Syntax error on token "byte", Dimensions expected after this token. - Syntax error on token(s), misplaced construct(s) – Angus Comber Feb 17 '13 at 17:46
Yup. You can't have `ByteCircularBuffer` extend `CircularBuffer`. You have to make an entirely separate class. – Louis Wasserman Feb 17 '13 at 18:49

How to pass a byte[] to this function

2 Answers2