Java, httpurlconnection, and set the content length

I am setting the length of the content in my httpurlconnection for put

urlConnection.setRequestProperty("Content-Length","" + responseJSONArray.toString(2).getBytes("UTF8").length);

The actual number of bytes is 74 However, when I query the content length of urlconnection, I return - 1 Why? Why are the lengths not equal (given that I set this)?

I have to set the content length because I received a 411 response from the server

(in addition, in sun examples, I see that the second parameter of setrequestproperty is of type int instead of string, which seems strange.)

Solution

You shouldn't set this head yourself Use setfixedlengthstreamingmode() or setchunkedtransfermode()