Maximized Screen in Linux Java (GraphicsEnvironment)
How do I maximized my Frame in Linux Environment??? Since there is no GraphicsEnvironment class available... Please Help me in this problem...
Hi ,
I have checked this will not work on Linux.
i.e. the call
setMaximizedState(Frame.MAXIMIZED_BOTH);
does NOT work in Linux(RHEL 4.X).
Can you please help me how to achieve the "MaximizedScreen" during the coming up of the UI in Linux?
Thanks,
-Bhaskar.
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You can get the screen dimensions using the toolkit.
Eg.
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In Photoshop CS3, when you use Maximized Screen Mode (image window maximized to the PS workspace) with an image window that's zoomed to a level where scroll bars exist, and you switch to another image window in the PS workspace and then switch back to the original image window (let's say using Ctrl-F6 or Ctrl-Tab) Photoshop will reposition the view to the upper left corner of the image rather than leaving it where it was.
For me, this bug is 100% reproducible.
This bug is also referenced in these forums at the following topics:
http://www.adobeforums.com/webx/.3bc3bd89
http://www.adobeforums.com/webx/.3bca160f
http://www.adobeforums.com/webx/.3c0561ea
I often carefully position 100% zoom-level images & alternate between windows for detailed comparison. It's extremely frustrating to toggle back only to be at a completely different location on the image window. I found this bug so maddening that I almost abandoned CS3 for an earlier version. It's still maddening, but at least I've found workarounds which I'll share with you here:
1) after opening an image and zooming to the extent that the above bug exists (scroll-bars available), press F and then shift-F (or vice versa) to switch to a different Screen Mode and back (problem goes away *for this image only* until the Zoom level is changed significantly - at which time you must repeat the workaround.) Repeat for every image for which you'd like the position to remain stationary when alternating to other windows and back.
2) click on Screen Mode button at the bottom of PS Toolbar and choose Maximized, (even if you were already on Maximized.) This has the same corrective effect as 1), above.
3) On a "fixed" image, if you forget to "reset" the fix after changing the zoom level significantly & you "lose your place" after alternating between windows (jumps to upper left corner), you can "recover" the previously "fixed" position by returning to the previous zoom level and switching to another window and back. It returns to the previously "fixed" location instead of the bug-altered PS chosen location of upper left corner!
4) Use a Screen Mode other than Maximized & this issue never occurs.
Adobe, this *really* should be addressed and corrected. I'd think this is much more serious than the "sticky menus" bug of CS2 that was fixed.
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Hi!! I am new to socket programing in both C and Java.
From let I downloaded some client server example for c and java and tried that to link !! (I allways learn this way , and I need to do that little urget )
though cient server in linux is working perfectly fine and same for java. But problem is when I tried to communicate C server on linux and java client on windows, I end up with getting some junk characters. Though they are connected successfully.
Here goes code for java client:
package whatever;
import java.io.*;
import java.net.*;
public class Requester{
Socket requestSocket;
ObjectOutputStream out;
ObjectInputStream in;
String message;
Requester(){}
void run()
try{
//1. creating a socket to connect to the server
requestSocket = new Socket("192.168.72.128", 2006);
System.out.println("Connected to localhost in port 2004");
//2. get Input and Output streams
out = new ObjectOutputStream(requestSocket.getOutputStream());
out.flush();
in = new ObjectInputStream(requestSocket.getInputStream());
System.out.println("above do");
//3: Communicating with the server
do{
try{
System.out.println("in do");
//message = (String)in.readObject();
System.out.println("in try");
//System.out.println("server>" + message);
System.out.println("server>" + "message");
sendMessage("Hi my server");
message = "bye";
sendMessage(message);
System.out.println("try completed");
catch(Exception e){
e.printStackTrace();
}while(!message.equals("bye"));
catch(UnknownHostException unknownHost){
System.err.println("You are trying to connect to an unknown host!");
catch(IOException ioException){
ioException.printStackTrace();
finally{
//4: Closing connection
try{
in.close();
out.close();
requestSocket.close();
catch(IOException ioException){
ioException.printStackTrace();
void sendMessage(String msg)
try{
String stringToConvert= "hello world";
byte[] theByteArray = stringToConvert.getBytes();
System.out.println(theByteArray.length);
out.writeObject(theByteArray);
out.flush();
System.out.println("client>" + msg);
catch(IOException ioException){
ioException.printStackTrace();
catch(Exception ex){
ex.printStackTrace();
public static void main(String args[])
Requester client = new Requester();
client.run();
And for C server
/ server
#include <stdio.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <netinet/in.h>
#define MAXPENDING 5 /* Max connection requests */
#define BUFFSIZE 32
void Die(char *mess) { perror(mess); exit(1); }
void HandleClient(int sock) {
char buffer[BUFFSIZE];
int received = -1;
/* Receive message */
if ((received = recv(sock, buffer, BUFFSIZE, 0)) < 0) {
Die("Failed to receive initial bytes from client");
/* Send bytes and check for more incoming data in loop */
while (received > 0) {
/* Send back received data */
if (send(sock, buffer, received, 0) != received) {
Die("Failed to send bytes to client");
// fprintf("%s",buffer);
fprintf(stdout, "message Recieved: %s\n", buffer);
//Die("was not able to echo socket message");
/* Check for more data */
if ((received = recv(sock, buffer, BUFFSIZE, 0)) < 0) {
Die("Failed to receive additional bytes from client");
close(sock);
// A TCP ECHO SERVER
int main(int argc, char *argv[]) {
int serversock, clientsock;
struct sockaddr_in echoserver, echoclient;
if (argc != 2) {
fprintf(stderr, "USAGE: echoserver <port>\n");
exit(1);
/* Create the TCP socket */
if ((serversock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0) {
Die("Failed to create socket");
/* Construct the server sockaddr_in structure */
memset(&echoserver, 0, sizeof(echoserver)); /* Clear struct */
echoserver.sin_family = AF_INET; /* Internet/IP */
echoserver.sin_addr.s_addr = htonl(INADDR_ANY); /* Incoming addr */
echoserver.sin_port = htons(atoi(argv[1])); /* server port */
// A TCP ECHO SERVER ENDS
// A TCP ECHO SERVER BINDING AND LISTNING
/* Bind the server socket */
if (bind(serversock, (struct sockaddr *) &echoserver, sizeof(echoserver)) < 0) {
Die("Failed to bind the server socket");
/* Listen on the server socket */
if (listen(serversock, MAXPENDING) < 0) {
Die("Failed to listen on server socket");
// A TCP ECHO SERVER BINDING AND LISTNING
// SOCKET FACTORY
/* Run until cancelled */
while (1) {
unsigned int clientlen = sizeof(echoclient);
/* Wait for client connection */
if ((clientsock =
accept(serversock, (struct sockaddr *) &echoclient, &clientlen)) < 0) {
Die("Failed to accept client connection");
fprintf(stdout, "Client connected: %s\n", inet_ntoa(echoclient.sin_addr));
HandleClient(clientsock);
// SOCKET FACTORY ENDSI know that it is not C forum but I found no better place to post it
Thankskajbj wrote:
ManMohanVyas wrote:
hii!! just trying to make it a little more explinatory
1) what I am trying to accomplish by the above code is: - just need to echo/print from the Server , message send by the Client. I know code is not that good but should be able to perform this basic operation( according to me ).You are wrong. I told you that it won't work as long as you are using ObjectOutputStream and ObjectInputStream. You shouldn't write objects.
2) Message sent by the client is "hello world"(hard coded).No, it's not. You are writing a serialized byte array.
3) what I am getting at the client end is "*message recieved: ur*" (before that It shows the Ip of client machine)
It should print "hello world ".See above.
You are having a problem, and I have told you what the problem is.hey I dont know what went wrong but . I posted all this just next to my first post ...before you posted !!
And hard coded byte array includes "hello world"...may be I am not able to explain properly. -
I'm creating a socket server in java language on Linux System, and I would like to launch it as a demon; it means that I want my server to start automatically after a reboot and to be launched in a script localised in the /etc/rc.d/init.d directory
I've already done that with a socket server written in C language (using fork() and dup() functions to "daemonize" my server), but I don't find equivalence in Java. I've tried to use the function "SetDaemon", but my server don't become a son of the init process ...
Is it possible or not ?
PS: sorry for my english ...Java can't demonize itself the same way as C programs do. Usually a shell script does that job. It sets all required variables (classpath & co) and starts the java process in the background (using &). Look at the way Tomcat does it for some hints.
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