How to call java method using ajax from a webpage? [duplicate]

Question

I want to call a java method getMessage() from a jar file whenever I click button on my webpage. I want to know how to achieve this.

My html file : index.html

   <!doctype html>
   <html>
   <head>
   <meta charset="utf-8"/>
   <script src="jquery-1.11.1.min.js"></script> 
   <script language="javascript">   

      function openMsg()
     {        
        var request = $.ajax({           // Here I am just calling jar file but I want the code to call method getMessage(); 
                   url: "Example.jar",
                   type:"GET",
                   dataType:"html"
                         });     

        request.done(function(msg){
                $("print").html(msg);
                         });

        request.fail(function(jqXHR, textStatus){
                alert("Request failed :",textStatus);
                         });                                    

     }       

   </script> 
   </head>

  <body>
   <button onclick="openMsg();">Click to open message</button>
   <p id="print"></p>
</body>
</html>

My java file : Example.java

    import java.awt.Color;
    import java.awt.Graphics;
    import javax.swing.JApplet;

    public class Example extends JApplet
  {

        public void start() 
      {

      }

        public void init()  
      {
         setBackground(Color.blue);
      }

        public void paint(Graphics g)   
      {
         g.drawString("Hello World !", 100, 100);
      }

         public void getMessage()
      {
          System.out.println("Good Morning..!!!");
      }

  }

Please someone tell me how can I call getMessage() method from Example.jar

And where would you like that System.out.println to appear? — Thilo
– Thilo, Commented Oct 18, 2016 at 15:26
the HTTP GET request arrives at a webserver. That webserver not has to call your java code and that is pretty broad. Also your code extends JApplet, which is something totally unrelated. — f1sh
– f1sh, Commented Oct 18, 2016 at 15:27
You need to install some server-side code that responds to HTTP requests by running your Java class. — Thilo
– Thilo, Commented Oct 18, 2016 at 15:27
Are you expeciting the Example.java to be on the user's machine? (client-side)? — fdomn-m
– fdomn-m, Commented Oct 18, 2016 at 15:29
Please don't repost the same question again. Here is the original question asked some hours ago: stackoverflow.com/questions/40104912/… — vanje
– vanje, Commented Oct 18, 2016 at 15:34

Community · Accepted Answer · 2017-05-23 12:33:25Z

1

you should create an http servlet to intercept the request (java dows not provide the connectivity). Try to see here

edited May 23, 2017 at 12:33

CommunityBot

11 silver badge

answered Oct 18, 2016 at 15:31

Gio

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