What are the ways to send HTTPS requests from the desktop java application? An example of the source code is especially interesting.

Answer 1, Authority 100%

The most primitive way is to use URLCONNECTION . Here is an example without handling errors, encodings and other husks:

Public Static Void Main (String [] Args) Throws Exception {
  UrlConnection Connection = New URL ("https://www.dev.java.net/servlets/projectlist") .OpenConnection ();
  Inputstream is = connection.getInputStream ();
  InputStReamReader Reader = New InputStreamReader (IS);
  char [] buffer = new char [256];
  INT RC;
  STRINGBUILDER SB = new stringbuilder ();
  While ((RC = Reader.Read (Buffer))! = -1)
    SB.APPEND (Buffer, 0, Rc);
  Reader.Close ();
  System.Out.printLN (SB);
}

In the event that it turns out that the standard urlConnection (more precisely, on the fact it is created HttpsurlConnection ) something can not, then use Apache HTTP Client .

Answer 2, Authority 8%

import java.net. *;
Import java.io. *;
Public Class URLReader {
  Public Static Void Main (String [] Args) Thrown Exception {
    URL Oracle = New URL ("http://www.oracle.com/");
    BufferedReader in = new buffereder (
    new inputstreamReader (oracle.openstream ()));
    String InputLine;
    STRINGBUILDER SB = new stringbuilder ();
    While ((Inputline = in.ReadLine ())! = NULL)
      SB.APPEND (Inputline);
    in.close ();
    System.Out.printLN (SB);
  }
}

source https://docs.orcle.com/javase/tutorial /Networking/urls/readingURL.html

Answer 3, Authority 8%

You can use http-request Built on Apache HTTP API.

string uri = "https://www.dev.java.net/servlets/projectlist";
Httprequest & lt; String & GT; httprequest = httprequestbuilder.createget (URI, String.class)
.responsedeserializer (responsedeseerializer.ignorabledeserializer ()). Build ();
Public Void Send () {
 ResponseHandler & lt; String & GT; Response = httprequest.execute (someparamsyouwant);
 System.out.PrintLN (response.getstatuscode ());
 System.out.PrintLN (response.get ()); // Retuns Response Body
}