Can't send data with the use of POST request from Java to PHP -

i trying send data java code php code use of post request. reason on php side nothing @ all, code "works" (no exception occurs). can problem? in advance! data looks this:

"data=" + sb.tostring() 

and code can found here below:

public static void sendrequest(string encryptedstring) {     httpurlconnection connection = null;     bufferedreader br = null;     dataoutputstream dos = null;      try {         connection = (httpurlconnection) new url("http://localhost/something/function").openconnection();         connection.setdooutput(true);         connection.setrequestmethod("post");         connection.setrequestproperty("content-type", "application/x-www-form-urlencoded");         connection.setfixedlengthstreamingmode(encryptedstring.length());          dos = new dataoutputstream(connection.getoutputstream());         dos.writebytes(encryptedstring);         dos.flush();          br = new bufferedreader(new inputstreamreader(connection.getinputstream()));          string line;         while((line = br.readline()) != null) {             system.out.println(line);         }      } catch (ioexception e) {         system.out.println("can't create connection...");         e.printstacktrace();     } {         try {             if(dos != null) dos.close();             if(connection != null) connection.disconnect();             if(br != null) br.close();         } catch (ioexception e) {             e.printstacktrace();         }     } } 

ps: picture:

the problem encrypted whole data=randomnumber thing sha-1. data= part should not encrypted , needs added later.