How convert from vector to Byte array

[dpsairam]

Hi,
How to convert a Vector to a Byte array....i have vector which contains a Byte array.....i need to convert the vector into Byte array...

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[JosAH]

@dpsairam
Is your vector a Vector<Byte> or a Vector<Byte[]> or a Vector<byte[]>?

kind regards,

Jos

[dpsairam]

Is your vector a Vector<Byte> or a Vector<Byte[]> or a Vector<byte[]>?

can you tell me what is the difference between these three

[JosAH]

@dpsairam
A Vector<Byte> contains objects of type Byte; a Vector<Byte[]> contains arrays and each element is a Byte type object. A Vector<byte[]> contains arrays of bytes; they are of primitive type.

kind regards,

Jos

[dpsairam]

my vector is Vector<byte[]>

[r035198x]

So you have a lot of these byte arrays (byte[]) in a Vector. And you want to 'convert' them to just one byte[]? What are the rules for the conversion?

[dpsairam]

@r035198x
what rules..........????dint get u

[dpsairam]

@r035198x
see i have a byte array in Vector i want to extract that byte array from this vector

[r035198x]

Is there only one byte[] in the Vector then?
That simplifies matters somewhat.
Now all you need is to know what position in the Vector the array is at. Suppose the array is at index 41, then you simply do the simple

int thePosition = 42; 
byte[] theExtractedByteArray = (byte[])myVector.get(42);
 

1.) If you use generics you won't need the cast.
2.) Why do you have Vector if you only have one byte[] to store?
3.) Why did you use Vector instead of ArrayList?

[JosAH]

@dpsairam
Suppose you have three arrays in the Vector with the following elements:

a1, a2 b1, b2, b3 and c1, c2

How do you want to store those seven elements in one array? There are several options and you know the 'rules', not us because we're not psychic.

kind regards,

Jos

[JosAH]

@r035198x
*ahem*

kind regards,

Jos ;-)

[r035198x]

41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41

Silly fingers, that should teach them to type of their own accord.

[JosAH]

@r035198x
I never have that.

kill regexp

Java ;-)

[JosAH]

@OP: I wonder how you got that byte[] in your Vector if you don't know how to get that element out of it.

kind regards,

Jos

ps. I noticed you reporting this thread; better concentrate on being clear so that we can answer your extremely vague question instead.