Thanks for reply. UDP port 80 has nothing to do with TCP port 80... and you can see the client class:
- I have a byte array - the image as a byte array
- I send the byte array using more 533KB...

Hello,
I have to take a snapshot of my screen and send the image to a client using Datagrams. I think my problem is at the client part. The image is null, and I don't know why.

Here is the server...

Yes... I don't get it anymore now with small length but I don't know why when I get to:

Object o = ois.readObject();// it does nothing here, I tested
int[] r = (int[])o;

That's how I sent it:...

I'm am trying to send over socket a very big array - length about 1300000 .... and I use ObjectInputStream and ObjectOutputStream. The problem is when I read the input stream... I get this exception:...

Yes, it is possible... but not that easy. First you should learn about Java Media Framework (http://java.sun.com/javase/technologies/desktop/media/jmf/). After that I think you should register...

I did it... sorry it is missing from my code but I did create the object.

Hello,

In my application I transfer a lot of images from server to client. The problem is the size of the image, so I tried to encode it using this encoder (http://objectplanet.com/pngencoder/) -...

Hello,

I built a chat application that uses sockets and TCP/IP protocol. The client is an applet. The problem is I cannot connect the applet client with the desktop server application. If I run...

Indeed it's about focus and about the component... I finally got it, thanks for answering. I add a windows listenter + requested focus to the RIGHT component. For example this is not working:

...

Please somebody help... this is unusual... why does the form not detect the keyboard?

Hello,

I build my java desktop application using NetBeans 6.7, visually. So I click on the Frame -> Events -> KeyTyped and I add a new handler.
The problem is the key events are not detected! My...

try this instead. I had the same problem:


try
{
robot = new Robot();
robot.mouseMove(0,900);
robot.mousePress(InputEvent.BUTTON1_MASK);
...

I finally found it myself... don't know why but it works if I use "BUTTON1_MASK" instead of "BUTTON1_DOWN_MASK".

Hi,

I want to "click" with the mouse using a Robot object like this:


Robot bot = new Robot();
bot.mousePress(InputEvent.BUTTON1_DOWN_MASK);
...

At least can someone give me a hint how to modify JVidCap example from Sun so that it records the screen? Here is the example. I can post the code if you like....

Hello,

In my project I have to capture screen activity (including audio) to a video file. I try using JMF for this. I don't know how to use those two classes: DataSource.java and LiveStream.java....

Wow.... I finally made it myself.. after a hard time. So I better post it, for people who seek this too.

//sending image from server
public void sendImage(File file) throws IOException {
...

kind of... L2CAP connection is more reliable but I just can't make it work. Thanks :)

I develop a chat (server and client) using Sockets. It's working on LAN but when I try to connect the client to the server using my public IP address it says it cannot connect to that address. My...

Just download the wirelesss development kit for java and, after you install it ouy'll find a folder with a lot of examples there. As for my problem, I abandoned L2CAP connection and used...

Hi,

I first convert the image on the server application in bytes:

//server
public void sendImage(File file) throws IOException {

ByteArrayOutputStream baos=new...

Thanks. That jpg had a problem... it was overwritten or something... now works.
I mark this thread as solved.
PLEASE sciwizeh*, can you give me some hints about how is better to communicate over...

Hello,

I'm trying to develop a chat application over internet. First I want to send just strings... later files. I want to have a client that is a java applet that connects to the server - a java...

Please someone help me... why image panel not showing that image in the frame:

//image panel class
import java.awt.*;
import java.awt.image.BufferedImage;
import javax.swing.*;

public class...

I know. As a matter of fact... my project must be made for a "Software Engineering" Course (at University) and I'm leading a team so I was told we must also visually design our application coded (by...

Thanks Ezzaral. Useful post.
After some hours of searching I think I found how to change the look as I wanted and it's useful for all (who did not find it yet).
The "Synth" Look and Feel:...

Thanks for the link... however I look for a less complicated way to do this... I found this link: http://pforfun.blogspot.com/2008/11/java-transparency-tutorial.html but I don't know if is a good...

Hello,
I am trying to design an java desktop application. My question is: Is there a way to change the whole look? From example different titlebar, different jFrame, buttons... (designed with PNG...

No I cannot because that means I interrupt all users and when they join again.... the same thing, that exception. Users must stay connected. I use a refresh function for connection which works nice...

I'm developing a bluetooth messaging application which sends text messages between devices.
My problem is when I connect more than 2 devices. After sending some data between them (let us say 3...

Can someone please tell me why I have been down-voted for previous post? I really wanted to solution this problem. I am used to explaint a lot of students facts like this so that's why I gave ki72...

Nice book, I read something.... it's just it uses other type of connection and things that doesn't match my case (L2CAPConnection is more flexible than StreamConnection).
However thanks for...

int a=0,b=0,c=0,d=0;
int n=4875;
int rest=0,i=1;


while(n!=0)
{
rest = n%10;//ghet the last digit of the number
n=(n-rest)/10; //the...

Hmm... try defining that 'ActionListener' outside the constructor.

Hello,
I'm working on a bluetooth chat application project called 'BlueChat'. I coded the server (BServer.java) and client (BClient.java) parts (2 separate threads). The visual part is called...

Did you try my idea bellow?

import java.io.File then use this code:

File f = new File("./");
System.out.println(f.getAbsolutePath());

This will tell you the absolute path of...

Add "import java.io.File;" then use this code:

File f = new File("./");
System.out.println(f.getAbsolutePath());

This will tell you the absolute path of the folder in which...

Yes. Thank you :). These are really good hints and valuable advices. (but I put " new usbThread(lbl_status).start();" in formWindowOpened event cause... again: Builder said 'non-static variable...

THANK YOU SO MUCH FOR SOLVING MY PROBLEM. I guess not only me was searching for this. :)
One note for the master :) : when said to add "new usbThread(lbl_status).start();" to the main function. You...

I designed the application in NetBeans visually (drag-drop). I tried also with the thread. Nothing freezes but the JLabel doesn't update even if the threads works fine in the background. Below it's...