Question

i want to cast byte[] which i got from socket a class which I write it (Message).
I tried

byte[] data=new btyte[100];
.
.
.
Message m=(Message)data;

but it did not work and give me error
what should I do?

Answer 1

Assuming you are talking about a serialized object:

try this:

ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(data));
Message message = (Message) in.readObject();
in.close();

In case you are serializing the Message in some other way, you will have to parse it yourself, using a parametrized constructor or a static method that returns a new instance of the type.