CODEWITHSUNDEEP
c#java
Anas ZO KO
Anas ZO KO

Reputation: 15

receiving string from c# to Java mistakes

I want to send String from C# to Jave I do it in C# in 2 side like this

Sender: C#

NetworkStream ns1 = _client2.GetStream();
byte[] b = { (byte)2 };//this is the command that sent from client to Server  
ns1.Write(b, 0, 1);
string data = "222222222";
byte[] b2 = _AC.GetBytes(data);
ns1.Write(b2, 0, b2.Length);

Reciever C#

 Byte[] b = new byte[10];
 ns.Read(b, 0, b.Length);
 string Data = _AE.GetString(b);

 while (ns.DataAvailable)
   {
     b = new byte[10];
     ns.Read(b, 0, b.Length);
     Data += _AE.GetString(b);
    }

I do some coding with no luck in Java .... like this..

byte b = is.readByte();
byte[] buff= new byte[8];
is.read(buff,0,10);

I receive inside buff[50,50,50,50,50,50,50,50,50]; .....then how to change it to string in java ..... Any help would be great ....thanks

Upvotes: 0

Views: 582

Answers (3)

thomas
thomas

Reputation: 5649

You should specify the encoding of your string! If the c#-program runs on another machine with another operating system than the java-application you might get problems. The java-doc of the String(byte[])-Constructor says:

Constructs a new String by decoding the specified array of bytes using the platform's default charset. ...

Let's say you specify utf-8 string encoding. You should also make sure that c# is also sending an utf-8-string:

byte[] utf8Bytes = System.Text.Encoding.UTF8.GetBytes(myString);

on java-side you should read the bytes as an utf-8-string like this:

String str = new String(buff, "UTF-8");

Upvotes: 2

GavinCattell
GavinCattell

Reputation: 3963

String has a contsructor for bytes. Just use:

String myNewString = String(buff);

There are several constructors for Strings from bytes, if you don't have any offset, or length concerns then just use the constructor above. If you start to have issues with character sets you can use something like:

String myNewString = null;
try {
    myNewString = String(buff , "UTF-8") 
} catch (java.io.UnsupportedEncodingException uee) {
    //Using an unknown charset will get you here.
    uee.printStackTrace();
}

Upvotes: 1

Radu Murzea
Radu Murzea

Reputation: 10910

50 is the numeric ASCII value of the character "2". Just take each element of buff and apply a cast of char to it: (char) buff[0], (char) buff[1] etc.

Upvotes: 0

Related Questions