I have a web service that I am re-writing from VB to a Java servlet. In the web service, I want to extract the body entity set on the client-side as such:

StringEntity stringEntity = new StringEntity(xml, HTTP.UTF_8);
stringEntity.setContentType("application/xml");
httppost.setEntity(stringEntity);

In the VB web service, I get this data by using:

Dim objReader As System.IO.StreamReader
objReader = New System.IO.StreamReader(Request.InputStream)
Dim strXML As String = objReader.ReadToEnd

and this works great. But I am looking for the equivalent in Java.

I have tried this:

ServletInputStream dataStream = req.getInputStream();
byte[] data = new byte[dataStream.toString().length()];
dataStream.read(data);

but all it gets me is an unintelligible string:

data = [B@68514fec

Please advise.

Edit

Per the answers, I have tried:

ServletInputStream dataStream = req.getInputStream();
ByteArrayOutputStream buffer = new ByteArrayOutputStream();

int r;
byte[] data = new byte[1024*1024];

while ((r = dataStream.read(data, 0, data.length)) != -1) {
    buffer.write(data, 0, r);
} 

buffer.flush();

byte[] data2 = buffer.toByteArray();

System.out.println("DATA = "+Arrays.toString(data2));

whichs yields: DATA = []

and when I try:

System.out.println("DATA = "+data2.toString());

I get:

DATA = [B@15282c7f

So what am I doing wrong? As stated earlier, the same call to my VB service gives me the xml that I pass in.