Solved

How to create own events in Java?

Posted on 1998-08-13
5
184 Views
Last Modified: 2008-02-01
How I can create my own events in Java? So that I can use them with HandleEvent?
0
Comment
Question by:Hugi
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
5 Comments
 
LVL 3

Expert Comment

by:mjenkins
ID: 1232584
If you really mean to handle the events using Component.handleEvent you just need to subclass the java.awt.Event class. Then call postEvent( event ) for the target component. This only applies to JDK 1.0.2, however.

If you want to use JDK 1.1+ then you need to subclass java.awt.AWTEvent and call Toolkit.getEventQueue().postEvent(event)


0
 

Author Comment

by:Hugi
ID: 1232585
I don't know if you did understood my question...
What I want to do is, to start an application and send an event which I can receive by another application.

0
 
LVL 3

Expert Comment

by:mjenkins
ID: 1232586
Do you mean in two separate JVM's? That would mean some sort of IPC (inter-process communication). The best thing to do would be to open a socket between the two processes and pass your events as serialized objects.
0
 

Author Comment

by:Hugi
ID: 1232587
And how can I do that?
I have found the following, but I want to communicate between two Processes on the same machine:
Socket connection = new Socket(hostname, portnum)


0
 
LVL 3

Accepted Solution

by:
mjenkins earned 100 total points
ID: 1232588
hostname is "localhost" for the local machine. Always. You decide on a port number you would like to use. Any port number over 1000 is okay. Many people try ports in the 10000 - 11000 range.

So the call would be:

Socket connection = new Socket( "localhost", 10100 );

The server and client use the same port number.

OK?
0

Featured Post

Online Training Solution

Drastically shorten your training time with WalkMe's advanced online training solution that Guides your trainees to action. Forget about retraining and skyrocket knowledge retention rates.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction Java can be integrated with native programs using an interface called JNI(Java Native Interface). Native programs are programs which can directly run on the processor. JNI is simply a naming and calling convention so that the JVM (Java…
Introduction This article is the second of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article covers the basic installation and configuration of the test automation tools used by…
Viewers will learn about the regular for loop in Java and how to use it. Definition: Break the for loop down into 3 parts: Syntax when using for loops: Example using a for loop:
This theoretical tutorial explains exceptions, reasons for exceptions, different categories of exception and exception hierarchy.

717 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question