Extends Thread and Remote
Hi.
I have a server that creates a Thread to comunicate to other server (a secondary server) using sockets.
public class Server extends Thread {
}I need to use RMI now but I can't extend Thread and Remote.
What can I do?
Thanks
Implement the Runnable interface and extend the Remote class. This way you can Construct A thread and pass it an instance of your Runnable interface. ie.
class MyClass extends Remote implements Runnable{
// put what ever methods you need and implment the run method
// for Runnable interface
now you can do this.
Thread myThread = new Thread(new MyClass());
myThread.start(); // to kick it off
Similar Messages
-
Extends thread and Runnle Interface
In java there 2 ways to create thread
1.Extending thread
2.implements runnable interface
What is difference between the 2 approaches? which one to use where?public class ThreadTest extends Thread {
public void run() {
public static void main(String[] args) {
ThreadTest tt = new ThreadTest();
tt.start();
public class ThreadTest extends Runnable {
public void run() {
public static void main(String[] args) {
ThreadTest tt = new ThreadTest();
Thread t = new Thread(tt);
t.start();
}The difference is how you start the thread when you code it. if you extend Thread, you can call its run method directly. When you extends Runnable, A wrapper is needed to start the thread.
The Runnable approach is used when your class is extending another class (eg. JFrame). Since Java do not support multiple inheritance, you can write something like public class MyProg extends JFrame implements Runnable, and still have a thread. -
We are using extends thread and implements runnable which class first calli
hi
Yes, the language allows it, but your JSL quote is the 3rd edition, and Java 1.4 is based on the 2nd edition (the 2nd edition of the JSL does not go into such a deep explanation of the example shown, so thanks for that pointer). In any case, since the JSL does not address my specific issue, it is only superficially relevant (IMHO). The language allows it, but the behavior is unpredictable. I think that's what is sticking in my craw. I'm not sure what the behavior should be, but if I had to, I would propose that the behavior should not change when I change the inheritance qualifiers (again, in this particular case), but there may be other considerations.
HibernateUtil is a snippet that can be found in the Hibernate tutorial/reference at [http://www.hibernate.org/hib_docs/v3/reference/en/html/tutorial.html|http://www.hibernate.org/hib_docs/v3/reference/en/html/tutorial.html]
The basic idea is a cached session factory, because session factories are expensive to build. We use multiple databases, so our incarnation of HibernateUtil compares the requested database to the one in a static factory variable. If they match, that factory is used. If they don't match, the thread switches to the requested factory and creates sessions from it.
The odd thing is that with the aforementioned inheritance "typo", it either detects that the requested database is the same as the one in the static factory (which is not true), or it returns the wrong factory (which is wrong). I want to emphasize that no other code changes were made (zero, zip, none, really, I mean it), and lots of other classes extend C1 (from the example) and they have never had this problem. -
Calls to methods in a class that extends Thread
Hello,
I have some code that I am initiating from within an ActionListener that is part of my programs GUI. The code is quite long winded, at least in terms of how long it takes to perform. The code runs nicely, however once it is running the GUI freezes completely until operations have completed. This is unacceptable as the code can take up to hours to complete. After posting a message on this forum in regard to the freezing of the GUI it was kindly suggested that I use multi-threading to avoid the unwelcome program behaviour.
The code to my class is as follows:
public class FullURLAddress
private boolean success_flag = true;
private BufferedReader iN;
private Document dT;
private EditorKit kT;
private Element lmNt;
private ElementIterator lmIterate;
private XURL[] compAddress;
private int countX = 0; //Tracks Vector vT's size.
private int countY = 0; //Tracks Vector vS's size.
private int xURLcount = 0; //Tracks XURL objects instantiated by this FullURLAddress object.
private SimpleAttributeSet simpAtSet;
private String aURL; //Contains original (Xtended) URL!
private String fileType;
private String indexContent;
private String[] parseURL;
private String[] finalStrings;
private String[] sortStrings;
private URL indexConnect;
private URLConnection iconn;
private Vector vT; //Stores href information, from targeted URL's HTML souce code.
private Vector vS; //Stores sorted HREF info ".jpg" and ".gif" only (no: png, tiff, etc).
public FullURLAddress(String aURL)
this.aURL = aURL;
try{
indexConnect = new URL(aURL);
iconn = indexConnect.openConnection();
iN = new BufferedReader(new InputStreamReader(iconn.getInputStream()));
/* Document creation, analysis objects instantiated */
vT = new Vector();
vS = new Vector();
kT = new HTMLEditorKit();
dT = kT.createDefaultDocument();
dT.putProperty("IgnoreCharsetDirective", Boolean.TRUE);
/* Iterate through document and store all HREF values */
kT.read(iN, dT, 0);
lmIterate = new ElementIterator(dT);
while((lmNt = lmIterate.next()) != null)
simpAtSet = (SimpleAttributeSet)lmNt.getAttributes().getAttribute(HTML.Tag.A);
if(simpAtSet != null) //As long as there are A tags to be read...
vT.addElement(simpAtSet.getAttribute(HTML.Attribute.HREF));
countX++;//Tracks number of HREF occurences occur, giving better control of the Vector.
}catch(MalformedURLException e){
success_flag = false;
System.out.println("FullURLAddress object has encountered a "+
"MalformedURLException at: "+aURL);
}catch(IOException e){
e.getMessage();
success_flag = false;
}catch(BadLocationException e){
e.getMessage();
success_flag = false;
/* Searches through all HREF attributes that are now stored in Vector
vT for occurences of the character string ".htm" */
sortStrings = new String[countX];
for(int i=0;i<countX;i++)
sortStrings[i] = (String)vT.elementAt(i); //Vector Strings transfered into array.
if(sortStrings.endsWith("gif")) // Does href value end with ".jpg"?
vS.addElement(sortStrings[i]); // If so add it to the sorted Vector vS.
countY++;
if(sortStrings[i].endsWith("GIF"))
vS.addElement(sortStrings[i]);
countY++;
if(sortStrings[i].endsWith("jpg")) // Does href value end with ".jpg"?
vS.addElement(sortStrings[i]); // If so add it to the sorted Vector vS.
countY++;
if(sortStrings[i].endsWith("JPG"))
vS.addElement(sortStrings[i]);
countY++;
finalStrings = new String[countY];
for(int j=0;j<countY;j++)
finalStrings[j] = (String)vS.elementAt(j);
public int getCount()
return countY; //Returns number of instances of htm strings
} //ending with either "jpg" or "gif".
public String[] xurlAddressDetails()
return finalStrings;
I have changed the above code to make use of multithreading by making this class extend Thread and implementing the run() method as follows:
public class FullURLAddress extends Thread
private boolean success_flag = true;
private BufferedReader iN;
private Document dT;
private EditorKit kT;
private Element lmNt;
private ElementIterator lmIterate;
private XURL[] compAddress;
private int countX = 0; //Tracks Vector vT's size.
private int countY = 0; //Tracks Vector vS's size.
private int xURLcount = 0; //Tracks XURL objects instantiated by this FullURLAddress object.
private SimpleAttributeSet simpAtSet;
private String aURL; //Contains original (Xtended) URL!
private String fileType;
private String indexContent;
private String[] parseURL;
private String[] finalStrings;
private String[] sortStrings;
private URL indexConnect;
private URLConnection iconn;
private Vector vT; //Stores href information, from targeted URL's HTML souce code.
private Vector vS; //Stores sorted HREF info ".jpg" and ".gif" only (no: png, tiff, etc).
public FullURLAddress(String aURL)
this.aURL = aURL;
public void run()
try{
indexConnect = new URL(aURL);
iconn = indexConnect.openConnection();
iN = new BufferedReader(new InputStreamReader(iconn.getInputStream()));
/* Document creation, analysis objects instantiated */
vT = new Vector();
vS = new Vector();
kT = new HTMLEditorKit();
dT = kT.createDefaultDocument();
dT.putProperty("IgnoreCharsetDirective", Boolean.TRUE);
/* Iterate through document and store all HREF values */
kT.read(iN, dT, 0);
lmIterate = new ElementIterator(dT);
while((lmNt = lmIterate.next()) != null)
simpAtSet = (SimpleAttributeSet)lmNt.getAttributes().getAttribute(HTML.Tag.A);
if(simpAtSet != null) //As long as there are A tags to be read...
vT.addElement(simpAtSet.getAttribute(HTML.Attribute.HREF));
countX++;//Tracks number of HREF occurences occur, giving better control of the Vector.
}catch(MalformedURLException e){
success_flag = false;
System.out.println("FullURLAddress object has encountered a "+
"MalformedURLException at: "+aURL);
}catch(IOException e){
e.getMessage();
success_flag = false;
}catch(BadLocationException e){
e.getMessage();
success_flag = false;
/* Searches through all HREF attributes that are now stored in Vector
vT for occurences of the character string ".htm" */
sortStrings = new String[countX];
for(int i=0;i<countX;i++)
sortStrings[i] = (String)vT.elementAt(i); //Vector Strings transfered into array.
if(sortStrings.endsWith("gif")) // Does href value end with ".jpg"?
vS.addElement(sortStrings[i]); // If so add it to the sorted Vector vS.
countY++;
if(sortStrings[i].endsWith("GIF"))
vS.addElement(sortStrings[i]);
countY++;
if(sortStrings[i].endsWith("jpg")) // Does href value end with ".jpg"?
vS.addElement(sortStrings[i]); // If so add it to the sorted Vector vS.
countY++;
if(sortStrings[i].endsWith("JPG"))
vS.addElement(sortStrings[i]);
countY++;
finalStrings = new String[countY];
for(int j=0;j<countY;j++)
finalStrings[j] = (String)vS.elementAt(j);
/* What happens with these methods, will they need to have their
own treads also? */
public int getCount()
return countY; //Returns number of instances of htm strings
} //ending with either "jpg" or "gif".
public String[] xurlAddressDetails()
return finalStrings;
Are there any special things that I need to do in regard to the variables returned by the getCount() and xurlAddressDetails() methods. These methods are called by the code that started the run method from within my GUI. I don't understand which thread these methods are running in, obviously there is an AWT thread for my GUI and then a seperate thread for my FullURLAddress objects, but does this new thread also encompass the getCount() and xurlAddressDetails() methods?
Please explain.
This probably sounds a little wack, but I don't understand what thread is responisble for the methods in my FullURLAddress class aside of course from the run() method which is obvious. Any help will be awesome.
Thanks
DavoThreads are part of code that allows you to run multiple operations "simultaneously". "Simultaneously", because threads are not run actually simultaneously in any one-CPU machine. Since you most propably have only one CPU in your system, you can only execute one CPU instruction at time. Basically this means that your CPU can handle only one java-operation at time. It does not matter if you put some code in thread and start it, it will still take up all CPU time as long as the thread runs.
So you would need a way to let other threads run also, for that purpose thread contains a yield feature that allows you to give time for other threads to run.
http://java.sun.com/j2se/1.4.1/docs/api/java/lang/Thread.html#yield()
You need to use thread's yield() method in your thread code, in a place you want to give other threads time to run. Also bear in mind that if you yield your first thread run to allow second thread to run, you also need to add yield to the second thread also. If you don't, after yielding the first thread, the second thread will eat up all CPU time until it finishes, thus meaning the rest of your first thread will be run after second thread is done.
One good place to execute yield() is usually at the end of a loop, for example 'for' or 'while' loop. This way you prevent for example while-deadlocks.
Here is a java thread tutorial, worthy reading:
http://java.sun.com/docs/books/tutorial/essential/threads/ -
Question about using threads and synchronizing objects
Hi all,
I am not that familiar and I have 2 questions.
QUESTION 1
I have a server which just sits and accepts incomming connections, then I spawn off a new thread which implements Runnable, and then call the run method. But the loop would not iterate, it would just sit inside the run method (which has rather long loop in it). I changed the class to extend Thread and called the start() method, rather than run(), and everything worked out fine.
Anyone know why this is?
QUESTION 2
So I am building a client server chat application where a user can be in multiple chat rooms. I have this personObject which has output/input streams. In the personObject, I create writeObject/ readObject method, which simply does as it implies.
I figured that I should make these methods synchronized, to ensure things run smoothly. however, when I made a call to readObject, which sat there and waited, and then made a call to writeObject, I would not enter the writeObject method. I took out the synchronized on the writeObject, and everything worked out fine.
I was under the assumption that synchronizing a method only synchronized on that method, not on the whole class. How come then was I not able to enter the writeObject method?
The more I think about it, I don't think I need to have these methods synchronized, but I thought it wouldn't hurt.
Thanks for the help.Hi all,
I am not that familiar and I have 2 questions.
QUESTION 1
I have a server which just sits and accepts incomming
connections, then I spawn off a new thread which
implements Runnable, and then call the run method.
But the loop would not iterate, it would just sit
inside the run method (which has rather long loop in
it). I changed the class to extend Thread and called
the start() method, rather than run(), and everything
worked out fine.
Anyone know why this is?
You should still implement Runnable, rather than extending Thread. Like this: Runnable r = new MyRunnable();
Thread t = new Thread(r);
t.start(); run() is just another method. Nothing special about it as far as multithreading or anything else goes.
start() is the method that actually spawns a new thread of execution.
I was under the assumption that synchronizing a
method only synchronized on that method, not on the
whole class. How come then was I not able to enter
the writeObject method?When you synchronize, you obtain a lock. As long as you hold that lock--until you exit the sync block or call wait()--no other thread can enter that block or any other block that obtains the same lock.
Two synchronized methods on the same object rely on obtaining the same lock--there's one lock for each object. -
Extends Thread versus Implements Runnable... difference?
I've seen them both used and to the naked eye it seems to be pretty much the same (besides the execution).
Can anyone tell me the major differences between the two methods of multi-threading and how/if one is better?
Do you ever make a deliberate choice to use Extends over Implements (or vice versa) for a specific task?For the record, I've normally used extends Thread, and
seeing the light that in doing that, I can only extend
one class, I'm looking into the alternative.
Are...
Thread t1 = new Thread(new myRunnableThread());
Thread t2 = new Thread(new myRunnableThread());
t1.start();
t2.start()
and...
MyExtendedThread t1 = new MyExtendedThread();
MyExtendedThread t2 = new MyExtendedThread();
t1.start();
t2.start();
equivalent?
equivalent meaning that they are equally fast? I'd say no, because in the first example you are creating a thread and a runnable, in the second you are only creating a thread.
>
Additionally, consider -
public class myExtendedThread extends Thread {
ServerSocket ServiceConnectSocket = new
ServerSocket(4000);
NotificationListener mainThread;
public myExtendedThread(NotificationListener
_mainThread) {
mainThread = _mainThread;
public void run() {
while(true)
if (ServiceConnectSocket != null)
return;
try
Thread.sleep(5000);
ServiceConnectSocket = new
ectSocket = new Socket(host, port);
ServiceConnectSocket.close();
mainThread.serviceReady();
catch (Exception e)
>
This thread basically tries to connect to a socket,
and when it does, it closes the socket it made,
notifies another thread (passed in at the constructor)
and returns.
My question is on what happens when Threads return.
When this thread returns... what happens exactly?
What if mainThread.serviceReady restarted that
t thread? Would it start a NEW thread or just re-run
the run() of the old one?
Once a thread returns, how long before Garbage
Collection will free up the memory it used?
When the run method returns, the thread is dead. It is not reused automatically. You have to implement some type of thread reuse like my code above.
I would assume that the normal GC rules apply. Each JVM can decide to cleanup the thread whenever it feels like it. -
A problem with Threads and MMapi
I am tring to execute a class based on Game canvas.
The problem begin when I try to Play both a MIDI tone and to run an infinit Thread loop.
The MIDI tone "Stammers".
How to over come the problem?
Thanks in advance
Kobi
See Code example below:
import java.io.IOException;
import java.io.InputStream;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.game.GameCanvas;
import javax.microedition.media.Manager;
import javax.microedition.media.MediaException;
import javax.microedition.media.Player;
public class MainScreenCanvas extends GameCanvas implements Runnable {
private MainMIDlet parent;
private boolean mTrucking = false;
Image imgBackgound = null;
int imgBackgoundX = 0, imgBackgoundY = 0;
Player player;
public MainScreenCanvas(MainMIDlet parent)
super(true);
this.parent = parent;
try
imgBackgound = Image.createImage("/images/area03_bkg0.png");
imgBackgoundX = this.getWidth() - imgBackgound.getWidth();
imgBackgoundY = this.getHeight() - imgBackgound.getHeight();
catch(Exception e)
System.out.println(e.getMessage());
* starts thread
public void start()
mTrucking = true;
Thread t = new Thread(this);
t.start();
* stops thread
public void stop()
mTrucking = false;
public void play()
try
InputStream is = getClass().getResourceAsStream("/sounds/scale.mid");
player = Manager.createPlayer(is, "audio/midi");
player.setLoopCount(-1);
player.prefetch();
player.start();
catch(Exception e)
System.out.println(e.getMessage());
public void run()
Graphics g = getGraphics();
play();
while (true)
tick();
input();
render(g);
* responsible for object movements
private void tick()
* response to key input
private void input()
int keyStates = getKeyStates();
if ((keyStates & LEFT_PRESSED) != 0)
imgBackgoundX++;
if (imgBackgoundX > 0)
imgBackgoundX = 0;
if ((keyStates & RIGHT_PRESSED) != 0)
imgBackgoundX--;
if (imgBackgoundX < this.getWidth() - imgBackgound.getWidth())
imgBackgoundX = this.getWidth() - imgBackgound.getWidth();
* Responsible for the drawing
* @param g
private void render(Graphics g)
g.drawImage(imgBackgound, imgBackgoundX, imgBackgoundY, Graphics.TOP | Graphics.LEFT);
this.flushGraphics();
}You can also try to provide a greater Priority to your player thread so that it gains the CPU time when ever it needs it and don't harm the playback.
However a loop in a Thread and that to an infinite loop is one kind of very bad programming, 'cuz the loop eats up most of your CPU time which in turn adds up more delays of the execution of other tasks (just as in your case it is the playback). By witting codes bit efficiently and planning out the architectural execution flow of the app before start writing the code helps solve these kind of issues.
You can go through [this simple tutorial|http://oreilly.com/catalog/expjava/excerpt/index.html] about Basics of Java and Threads to know more about threads.
Regds,
SD
N.B. And yes there are more articles and tutorials available but much of them targets the Java SE / EE, but if you want to read them here is [another great one straight from SUN|http://java.sun.com/docs/books/tutorial/essential/concurrency/index.html] .
Edited by: find_suvro@SDN on 7 Nov, 2008 12:00 PM -
Problem with Thread and InputStream
Hi,
I am having a problem with threads and InputStreams. I have a class which
extends Thread. I have created and started four instances of this class. But
only one instance finishes its' work. When I check the state of other three
threads their state remains Runnable.
What I want to do is to open four InputStreams which are running in four
threads, which reads from the same url.
This is what I have written in my thread class's run method,
public void run()
URL url = new URL("http://localhost/test/myFile.exe");
URLConnection conn = url.openConnection();
InputStream istream = conn.getInputStream();
System.out.println("input stream taken");
If I close the input stream at the end of the run method, then other threads
also works fine. But I do not want to close it becuase I have to read data
from it later.
The file(myFile.exe) I am trying to read is about 35 MB in size.
When I try to read a file which is about 10 KB all the threads work well.
Plz teach me how to solve this problem.
I am using JDK 1.5 and Win XP home edition.
Thanks in advance,
Chamal.I dunno if we should be doing such things as this code does, but it works fine for me. All threads get completed.
public class ThreadURL implements Runnable
/* (non-Javadoc)
* @see java.lang.Runnable#run()
public void run()
try
URL url = new URL("http://localhost:7777/java/install/");
URLConnection conn = url.openConnection();
InputStream istream = conn.getInputStream();
System.out.println("input stream taken by "+Thread.currentThread().getName());
istream.close();
System.out.println("input stream closed by "+Thread.currentThread().getName());
catch (MalformedURLException e)
System.out.println(e);
//TODO Handle exception.
catch (IOException e)
System.out.println(e);
//TODO Handle exception.
public static void main(String[] args)
ThreadURL u = new ThreadURL();
Thread t = new Thread(u,"1");
Thread t1 = new Thread(u,"2");
Thread t2 = new Thread(u,"3");
Thread t3 = new Thread(u,"4");
t.start();
t1.start();
t2.start();
t3.start();
}And this is the o/p i got
input stream taken by 2
input stream closed by 2
input stream taken by 4
input stream closed by 4
input stream taken by 3
input stream closed by 3
input stream taken by 1
input stream closed by 1
can u paste your whole code ?
ram. -
Exchange Server 2013 and Remote Access VPN on a single server running Windows Server 2012?
Just by way of background, I have been installing and administering network servers, e-mail systems, VPN servers, and the like for many years. However, my involvement with Exchange and Windows Server has been mostly on the forensics and data recovery
level, or as a (sophisticated) user. I have never tried to deploy either from scratch before. My deployment experiences have been mostly with Linux in recent years, and with small private or personal "servers" running such cutting edge
software as Windows XP back when it was new. And even NetWare once.
When a client asked me if I could set up a server for his business, running Exchange Server (since they really want Outlook with all of its bells and whistles to work, particularly calendars) and providing VPN access for a shared file store, I figured it
could not be too difficult given that its a small business, with only a few users, and nothing sophisticated in the way of requirements. For reasons that don't bear explaining here, he was not willing to use a vendor hosting Exchange services or cloud
storage. There is no internal network behind the server; it is intended to be a stand-alone server, hanging off a static IP address on the Internet, providing the entirely mobile work-force of about 10 people with Exchange-hosted e-mail for their computers
and phones, a secure file store, and not much else. If Exchange didn't need it, I would not need to install Active Directory, for example. We have no direct need for its services.
So I did the research and it appears, more by implication than outright assertion, that I should be able to run Windows Server 2012 with Exchange Server 2013 on a server that also hosts Remote Access (VPN only) and does nothing else. And it appears
I ought to be able to do it without virtualizing any of it. However, I have spent the last three or four days fighting one mysterious issue after another. I had Remote Access VPN working and fairly stable very quickly (although it takes a very
long time to become available after the server boots), and it has mostly remained reliable throughout although at times while installing Exchange it seems to have dropped out on me. But I've always been able to get it back after scrounging through the
logs to find out what is bothering it. I have occasionally, for a few minutes at a time, had Exchange Server willing to do everything it should do (although not always everything at the same time). At one point I even received a number of e-mails
on my BlackBerry that had been sent to my test account on the Exchange Server, and was able to send an e-mail from my BlackBerry to an outside account.
But then Exchange Server just stopped. There are messages stuck in the queues, among other issues, but the Exchange Administration Center refuses now to display anything (after I enter my Administrator password, I just get a blank screen, whether on
the server or remotely).
So, I am trying to avoid bothering all of you any more than I have to, but let me just begin with the basic question posed in the title: Can I run Exchange Server (and therefore Active Directory and all of its components) and Remote Access (VPN only) on
a single Windows Server 2012 server? And if so, do I have to run virtual machines (which will require adding more memory to the server, since I did not plan for it when I purchased it)? If it can be done, can anyone provide any pointers on what
the pitfalls are that may be causing my problems? I am happy to provide whatever additional information anyone might like to help figure it out.
Thanks!An old thread but I ran into this issue and thought I share my solution since I ran into the same issue. Configuring VPN removes the HTTPS 443 binding on the Default Site in IIS for some strange reason; just go and editing the bindings, add HTTPS and things
should be back to normal. -
AirPlay and Remote no longer working after 6.1 update.
After updating my Apple TV to iOS 6.1 I am no longer able to connect to it via AirPlay (from iPad or iTunes) or even control it with Remote.app on my iPad.
After hard restarting it (by unplugging it) I am able to, until it goes to sleep, after which it becomes unreacheable, and remains so even after being awoken by the physical Apple remote.
What is going on?
Please fix this soon, Apple!Same issue...
Just updated my iPhone 5 this morning, and then whilst out I bought the latest AppleTV (only so I'd get AirPlay compatibility). Brought it home and updated it.
Note I've made sure ATV & iPhone are on the same WiFi network. Have enabled sharing on my MacBook iTunes (not that I'm sure you need this for airplay). I terms of trying air play from MacBook to ATV I haven't found out a way to do this yet, however it might be because I've never done it before and haven't found the write button to click...
Then I could NOT work out how to get airplay working in any form from my iPhone to ATV. Also tried AppleRemote IOS app as I noted an update came through but I haven't got that working either.
Will monitor this thread and hopefully someone can give advice/workaround. -
What is the difference between local printing and remote printing in SAP
Hello Nation,
I would like to know what is the difference between local printing and remote printing in SAP and in what scenarios they are used ?
1.What is local printing in SAP ?
2.What is Remote Printing in SAP?
3.what is the difference between local printing and remote printing in SAP ?
Thank you in Advance.
Regards,
-Mohamed Naveen.Hi,
This is SAP Business one system administration forum. Please find correct forum and repost your discussion to get quick response.
Please close this thread here with helpful answer.
Thanks & Regards,
Nagarajan -
As we all know,
the Windows Server Essentials Experience role is available in Windows Server 2012 R2 Standard and Windows Server 2012 R2 Datacenter. We can add the Windows Server
Essentials Experience role in Server Manager or via Windows PowerShell.
In this article, we introduce the steps to install and configure Windows
Server Essentials Experience role on Windows Server 2012 R2 Standard via PowerShell locally and remotely. For better analyze, we divide this article into two parts.
Before installing the Windows Server Essentials Experience Role, please use
Get-WindowsFeature
PowerShell cmdlet to ensure the Windows Server Essentials Experience (ServerEssentialsRole) is available. (Figure 1)
Figure 1.
Part 1: Install Windows Server Essentials Experience role locally
Add Windows Server Essentials Experience role
Run Windows PowerShell as administrator, then type
Add-WindowsFeature ServerEssentialsRole cmdlet to install Windows Server Essentials Experience role. (Figure 2)
Figure 2.
Note: It is necessary to configure Windows Server Essentials Experience (Post-deployment Configuration). Otherwise, you will encounter following issue when opening Dashboard.
(Figure 3)
Figure 3.
2. Configure Windows Server Essentials Experience role
(1) In an existing domain environment
Firstly, please join the Windows Server 2012 R2 Standard computer to the existing domain through the path:
Control Panel\System\Change Settings\”Change…”\Member of. (Figure 4)
Figure 4.
After that, please install Windows Server Essentials Experience role as original description. After installation completed, please use the following command to configure Windows
Server Essentials:
Start-WssConfigurationService –Credential <Your Credential>
Note: The type of
Your Credential should be as: Domain-Name\Domain-User-Account.
You must be a member of the Enterprise Admin group and Domain Admin group in Active Directory when using the command above to configure Windows Server Essentials. (Figure 5)
Figure 5.
Next, you can type the password for the domain account. (Figure 6)
Figure 6.
After setting the credential, please type “Y” to continue to configure Windows Server Essentials. (Figure 7)
Figure 7.
By the way, you can use
Get-WssConfigurationStatus
PowerShell cmdlet to
get the status of the configuration of Windows Server Essentials. Specify the
ShowProgress parameter to view a progress indicator. (Figure 8)
Figure 8.
(2) In a non-domain environment
Open PowerShell (Run as Administrator) on the Windows Server 2012 R2 Standard and type following PowerShell cmdlets: (Figure 9)
Start-WssConfigurationService -CompanyName "xxx" -DNSName "xxx" -NetBiosName "xxx" -ComputerName "xxx” –NewAdminCredential $cred
Figure 9.
After you type the commands above and click Enter, you can create a new administrator credential. (Figure 10)
After creating the new administrator credential, please type “Y” to continue to configure Windows Server Essentials. (Figure 11)
After a reboot, all the configurations will be completed and you can open the Windows Server Essentials Dashboard without any errors. (Figure 12)
Figure 12.
Please click to vote if the post helps you. This can be beneficial to other community members reading the thread.Part 2: Install and configure Windows Server Essentials Experience role remotely
In an existing domain environment
In an existing domain environment, please use following command to provide credential and then add Server Essentials Role: (Figure 13)
Add-WindowsFeature -Name ServerEssentialsRole
-ComputerName xxx -Credential DomainName\DomainAccount
Figure 13.
After you enter the credential, it will start install Windows Server Essentials role on your computer. (Figure 14)
Figure 14.
After the installation completes, it will return the result as below:
Figure 15.
Next, please use the
Enter-PSSession
cmdlet and provide the correct credential to start an interactive session with a remote computer. You can use the commands below:
Enter-PSSession –ComputerName
xxx –Credential DomainName\DomainAccount (Figure 16)
Figure 16.
Then, please configure Server Essentials Role via
Add-WssConfigurationService cmdlet and it also needs to provide correct credential. (Figure 17)
Figure 17.
After your credential is accepted, it will update and prepare your server. (Figure 18)
Figure 18.
After that, please type “Y” to continue to configure Windows Server Essentials. (Figure 19)
Figure 19.
2. In a non-domain environment
In my test environment, I set up two computers running Windows Server 2012 R2 Standard and use Server1 as a target computer. The IP addresses for the two computers are as
below:
Sevrer1: 192.168.1.54
Server2: 192.168.1.53
Run
Enable-PSRemoting –Force on Server1. (Figure 20)
Figure 20.
Since there is no existing domain, it is necessary to add the target computer (Server1) to a TrustedHosts list (maintained by WinRM) on Server 2. We can use following command
to
add the TrustedHosts entry:
Set-Item WSMan:\localhost\Client\TrustedHosts IP-Address
(Figure 21)
Figure 21.
Next, we can use
Enter-PSSession
cmdlet and provide the correct credential to start an interactive session with the remote computer. (Figure 22)
Figure 22.
After that, you can install Windows Server Essentials Experience Role remotely via Add-WindowsFeature ServerEssentialsRole cmdlet. (Figure 23)
Figure 23.
From figure 24, we can see that the installation is completed.
Figure 24.
Then you can use
Start-WssConfigurationService cmdlet to configure Essentials Role and follow the steps in the first part (configure Windows Server Essentials Experience in a non-domain environment) as the steps would be the same.
The figure below shows the status of Windows Server Essentials.
Figure
25.
Finally, we have successfully configured Windows Server Essentials on Server1. (Figure 26)
Figure 26.
More information:
[Forum
FAQ] Introduce Windows Powershell Remoting
Windows Server Essentials Setup Cmdlets
Please click to vote if the post helps you. This can be beneficial to other community members reading the thread. -
Hi everyone,
I have a question about threads. I have a JDesktopPane in a Frame. I have added a number of JInternalFrame to the JDeskTopPane that is show/hide as required. This all works fine.
One particular internal frame is a frame that allows the training of a neural network. This process can take a long time so I am associated the neural network class with it's own thread and then calling "start()" (which runs the training sequence over the example set).
During the traning sequence events are fired and are picked up by NeuralNetwork listeners. This is so that the progress of the neural network training can be monitorred. For example, my internal frame has a progress bar that increments every time a training cycle is completed (a training sequence consists on many training cycles).
The problem occurs when the training sequence finishes. Somehoe things go haywire and my machine grinds to a halt. Everything slows down to a crawl and it is very difficult to get the machine to respond to anything.
I believe that it is something to do with the way that I have defined by events. I have an event class defined as follows;
/* CODE START */
public class NeuralNetworkEvent extends java.util.EventObject {
private int cycle = 0;
public int getCycle() { return this.cycle; }
public NeuralNetworkEvent(Object source, int cycle) {
super(source);
this.cycle = cycle;
/* CODE END */
And a listener defined like this;
/* CODE START */
public interface NeuralNetworkListener extends java.util.EventListener {
public void trainingCycleCompleted(NeuralNetworkEvent evt);
/* CODE END */
Events are fired to registered listeners from within the neural network class like this;
/* CODE START */
public void addNeuralNetworkListener(NeuralNetworkListener listener) { neuralNetworkListeners.add(listener); }
public void fireNeuralNetworkEvent() {
for (int count = 0; count < neuralNetworkListeners.size(); count++)
((NeuralNetworkListener)neuralNetworkListeners.get(count)).trainingCycleCompleted(new NeuralNetworkEvent(this, currentCycle));
/* CODE END */
And my internal frame (which is a NeuralNetworkListener) does this when a neural network event is fired;
/* CODE START */
pbNetwork.setValue(pbNetwork.getValue() + 1);
if ( evt.getCycle() == TOTAL_CYCLES - 1 ) cmdPredict.setEnabled(true);
/* CODE END */
Interestingly, execution never gets to the point where the predict button would be enabled (and I have checked the "if" statement for validity - it should resolve to "true"). In any case, is it at the point where the progress bar reaches 100% that everything goes haywire.
I hope that someone can help me this this - I am a little stuck with this.
Thanks in advance for you help. :)
BenHi,
Swing classes are not thread-safe. So if you want to update some Swing object (like the ProgressBar) from other than the Event Thread, use SwingUtilities.invokeLater(Runnable) or SwingUtilities.invokeAndWait(Runnable). Note, that firing an event takes place in the same Thread. So you might need to synchronize them as well. -
Hello.....
I'm not able to log into Windows Server 2008 r2 server thorugh Remote Desktop connection, receiving below error message.
This issue is with only three servers in the environment
"Remote Desktop cannot verify the identity of the computer because there is a time or date diffrence between your computer and remote computer......"
The date/time is correct on the server when i checked in the console session of the server
Can see below messages in event logs
Event ID 1014:
"Name resolution for the name XYZdomain.com timed out after none of the configured DNS servers responded."
Event ID 1053:
The processing of Group Policy failed. Windows could not resolve the user name. This could be caused by one of more of the following:
a) Name Resolution failure on the current domain controller.
b) Active Directory Replication Latency (an account created on another domain controller has not replicated to the current domain controller).
Any thoughts ....Hi,
Have you tried to connect these three servers with IP address instead of computer name or DNS name?
Check Remote Desktop Connection settings: Option-->Advanced-->Connect from anywhere-->Settings-->Connection Settings-->Select “Do not user an RD Gateway server”
For more information please refer to following MS articles:
Remote Desktop cannot verify the identity of the remote computer because there is a time or date difference between your computer and the remote computer
http://social.technet.microsoft.com/Forums/en-US/w7itpronetworking/thread/c1f64836-5606-49b0-82eb-56be7f696520
Cannot connect via Remote Desktop
http://social.technet.microsoft.com/Forums/en-US/windowsserver2008r2general/thread/5087e897-8313-468c-ad37-ef18b87d4dd6
Lawrence
TechNet Community Support -
Very Urgent, files, threads, and swing !!!!
Dear friends, i have a swing application, in that application i have a class that extends a thread, that thread will do nothing but read the contents of my data file and puts them in an array, but i am getting a NullpointerException in my thread, could any friend help me please, it is very urgent, i will post my code below.
import java.awt.*;
import java.awt.event.*;
import java.text.DateFormat;
import java.util.*;
import javax.swing.*;
import java.sql.*;
import java.net.URL;
import java.io.*;
public class FinalMachine extends JFrame
private JPanel MainPanel, ThicknessPanel, MainManager,fieldsPanel, sub_panel;
private Container c;
private CardLayout CardManager;
private String timezone;
private static final int ONE_SECOND = 1000;
private JLabel welcome_label, label1, label2, label3,field_label;
private JTextField data_entry;
private Connection connection;
public JPanel thick_figure;
public int num_of_hits, next_index, recCount;
public int dataBuffer[];
public FileReader data_file;
public BufferedReader b_data_file;
public File tem_file;
final int num_of_rec = 20;
public FinalMachine()
super("PHOENIX MACHINERY s.a.l");
/* Start all threads */
/* Start filling data file in global array */
loadData dataFile = new loadData();
dataFile.start();
/* Adding control to window application */
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent windowevent)
// setDefaultCloseOperation(0);
System.exit(0);
public void windowDeiconified(WindowEvent eve)
setState(0);
addComponentListener(new ComponentAdapter() {
public void componentResized(ComponentEvent componentevent)
setSize(500, 500);
Dimension dimension1 = Toolkit.getDefaultToolkit().getScreenSize();
if(dimension1.width == 800 && dimension1.height == 600)
setLocation(150, 25);
else
if(dimension1.width == 1024 && dimension1.height == 768)
setLocation(200, 100);
/* Setting the location of the application on the screen */
Dimension dimension = Toolkit.getDefaultToolkit().getScreenSize();
if(dimension.width == 800 && dimension.height == 600)
setLocation(150, 25);
else
if(dimension.width == 1024 && dimension.height == 768)
setLocation(200, 100);
/* Constructing the main menu */
JMenuBar bar = new JMenuBar();
setJMenuBar( bar );
JMenu fileMenu = new JMenu( "File");
fileMenu.setMnemonic( 'F' );
JMenuItem mainItem = new JMenuItem( "Main page" );
mainItem.setMnemonic( 'M' );
mainItem.addActionListener (
new ActionListener() {
public void actionPerformed( ActionEvent e )
CardManager.show(MainManager, "main");
fileMenu.add( mainItem );
JMenuItem dataItem = new JMenuItem( "Database page" );
dataItem.setMnemonic( 'D' );
dataItem.addActionListener (
new ActionListener() {
public void actionPerformed( ActionEvent e )
CardManager.show(MainManager, "data_base");
fileMenu.add( dataItem );
JMenuItem printItem = new JMenuItem( "Print" );
printItem.setMnemonic( 'P' );
printItem.addActionListener (
new ActionListener() {
public void actionPerformed( ActionEvent e )
PrintUtilities.printComponent(MainManager);
fileMenu.add( printItem );
JMenuItem exitItem = new JMenuItem( "Exit" );
exitItem.setMnemonic( 'P' );
exitItem.addActionListener (
new ActionListener() {
public void actionPerformed( ActionEvent e )
System.exit(0);
fileMenu.add( exitItem );
bar.add( fileMenu );
JMenu figureMenu = new JMenu( "Figures");
figureMenu.setMnemonic( 'G' );
JMenuItem thicknessItem = new JMenuItem( "Thickness" );
thicknessItem.setMnemonic( 'T' );
thicknessItem.addActionListener (
new ActionListener() {
public void actionPerformed( ActionEvent e )
CardManager.show(MainManager, "thickness");
figureMenu.add( thicknessItem );
bar.add( figureMenu );
JMenu helpMenu = new JMenu( "Help");
helpMenu.setMnemonic( 'H' );
JMenuItem aboutItem = new JMenuItem( "About us" );
aboutItem.setMnemonic( 'A' );
aboutItem.addActionListener (
new ActionListener() {
public void actionPerformed( ActionEvent e )
JOptionPane.showMessageDialog(null, "Engineer Bilal Haidar (Computer & "+ "Communication Engineering)\n\n All Rights Reserevd. @ 2002",
"About me...", JOptionPane.PLAIN_MESSAGE);
helpMenu.add( aboutItem );
bar.add( helpMenu );
/* Intializing global values */
dataBuffer = new int[60];
/* Initializing the panels */
c = getContentPane();
c.setLayout(new FlowLayout());
CardManager = new CardLayout();
MainManager = new JPanel(false);
MainManager.setLayout(CardManager);
c.add(MainManager);
javax.swing.border.Border border = BorderFactory.createEmptyBorder(10, 10, 5, 10);
MainPanel = new JPanel(false);
MainPanel.setLayout(new BoxLayout(MainPanel, 1));
MainPanel.setBorder(border);
ThicknessPanel = new JPanel(false);
ThicknessPanel.setLayout(new BoxLayout(ThicknessPanel, 1));
ThicknessPanel.setBorder(border);
fieldsPanel = new JPanel(false);
fieldsPanel.setLayout( new BoxLayout( fieldsPanel,1));
fieldsPanel.setBorder(border);
sub_panel = new JPanel(false);
sub_panel.setLayout( new BoxLayout(sub_panel,0) );
sub_panel.setBorder(border);
thick_figure = new JPanel(false);
thick_figure.setBorder(border);
/* Filling the main panel */
JLabel jlmain = new JLabel("Main Page");
MainPanel.add(jlmain);
timezone = showTime(new Locale("en", "US"));
JLabel jltime = new JLabel(" " + timezone);
MainPanel.add(jltime);
MainManager.add(MainPanel, "main");
/* Filling the thickness panel */
num_of_hits = 0;
next_index = 0;
/* fill in with ero values for everything*/
/*display the figure*/
ThicknessPanel.add(thick_figure);
JLabel blanklabel = new JLabel(" ");
ThicknessPanel.add(blanklabel);
JButton build_fig = new JButton("Draw Figure");
build_fig.addActionListener(
new ActionListener() { // anonymous inner class
public void actionPerformed( ActionEvent e )
if ( num_of_hits == 0 )
/* draw figure based on first 20 points in the array */
next_index = num_of_rec;
else
if ( num_of_hits > 3 )
JOptionPane.showMessageDialog(null,"No more data to draw","Error Drawing",JOptionPane.ERROR_MESSAGE);
else
/* draw the figure starting the data from index 20*/
next_index = next_index + num_of_rec;
num_of_hits += 1;
ThicknessPanel.add(build_fig);
MainManager.add(ThicknessPanel, "thickness");
/* filling the database panel */
label1 = new JLabel(" ",SwingConstants.CENTER);
welcome_label = new JLabel(" Database Page ",SwingConstants.CENTER);
label2 = new JLabel(" ",SwingConstants.CENTER);
fieldsPanel.add( label1 );
fieldsPanel.add( welcome_label );
fieldsPanel.add( label2 );
field_label = new JLabel(" Enter your name: ");
data_entry = new JTextField( 10 );
sub_panel.add( field_label );
sub_panel.add( data_entry );
fieldsPanel.add( sub_panel );
JButton add_data = new JButton( "Add me" );
add_data.addActionListener(
new ActionListener() { // anonymous inner class
public void actionPerformed( ActionEvent e )
// try {
// url = "jdbc:odbc:DataEntry";
// Class.forName( "sun.jdbc.odbc.JdbcOdbcDriver" );
// connection = DriverManager.getConnection( url );
// System.out.println( "Connection Suucessfull");
// Statement statement = connection.createStatement();
// String get_field;
// get_field = data_entry.getText();
// String query = "INSERT INTO data (anyField) VALUES ('get_field')";
// int result1 = statement.executeUpdate( query );
// if ( result1 == 1 )
// JOptionPane.showMessageDialog(null, "Thanks for the info..."," Data Entry Success",JOptionPane.INFORMATION_MESSAGE);
// else
// JOptionPane.showMessageDialog(null, "Sorry, your name was not added...","Data entry error",JOptionPane.ERROR_MESSAGE);
// catch ( ClassNotFoundException cnfex ) {
// // process ClassNotFoundExceptions here
// cnfex.printStackTrace();
// System.out.println( "Connection UN Suucessfull");
// catch ( SQLException sqlex ) {
// // process SQLExceptions here
// sqlex.printStackTrace();
// System.out.println( "Connection UN Suucessfull");
// catch ( Exception ex ) {
// // process remaining Exceptions here
// ex.printStackTrace();
// System.out.println( "Connection UN Suucessfull");
fieldsPanel.add(add_data);
MainManager.add(fieldsPanel, "data_base");
/* display time */
Timer timer = new Timer(1000, new ActionListener() {
public void actionPerformed(ActionEvent actionevent)
timezone = showTime(new Locale("en", "US"));
setTitle("PHOENIX MACHINERY s.a.l " + timezone);
timer.start();
public static void main(String args[])
FinalMachine finalmachine = new FinalMachine();
finalmachine.setSize(500, 500);
ImageIcon imageicon = new ImageIcon("images/pc.gif");
finalmachine.setIconImage(imageicon.getImage());
finalmachine.show();
public static String showTime(Locale locale)
java.util.Date date = new java.util.Date();
byte byte0 = 2;
DateFormat dateformat = DateFormat.getTimeInstance(byte0, locale);
String s = dateformat.format(date);
return s;
/* Thread loadData starts here */
class loadData extends Thread
public void run()
try {
readMyFile();
catch( Exception x )
System.out.println("The following error occured in LoadData thread : "+x.toString() ); }
} // run() ends here
/* method read file inside thread loadData */
void readMyFile() {
String record = " ";
recCount = 0;
try {
tem_file = new File("mydata.dat");
data_file = new FileReader(tem_file);
b_data_file = new BufferedReader( data_file );
record = new String();
while ( (record = b_data_file.readLine()) != null ) {
dataBuffer[recCount] = Integer.parseInt(record);
recCount += 1; }
b_data_file.close();
catch (IOException e) {
System.out.println("Uh oh, got an IOException error!");
e.printStackTrace();
} // end of readMyFile()
} // thread loadData ends
mydata.dat
2
4
3
1
2
3
5
2
4
1
6
3
2
5
4
1
2
5
8
2
6
9
7
4
2
1
0
2
5
4
8
7
5
6
3
2
1
4
3
0
2
3
6
5
2
1
4
5
6
9
8
5
2
1
6
8
3
1
7
5Thank you Mr. jobuck, you helped me a lot, i wonder if you can provide me with a tutorial on how threads work and how runnables work too. i fixed the error ut old me about but still when i try to add another thread to my program i got an error saying that, i must decalre the new thread in a seperate file please can u have a look on what i have:
import java.awt.*;
import java.awt.event.*;
import java.text.DateFormat;
import java.util.*;
import javax.swing.*;
import java.sql.*;
import java.net.URL;
import java.io.*;
public class FinalMachine extends JFrame
private JPanel MainPanel, ThicknessPanel, MainManager,fieldsPanel, sub_panel;
private Container c;
private CardLayout CardManager;
private String timezone;
private static final int ONE_SECOND = 1000;
private JLabel welcome_label, label1, label2, label3,field_label;
private JTextField data_entry;
private JPanel thick_figure;
private int num_of_hits, next_index, recCount, read_flag;
private int dataBuffer[];
private FileReader data_file;
private BufferedReader b_data_file;
private File tem_file;
private Connection connection;
final int num_of_rec = 20;
public FinalMachine()
super("PHOENIX MACHINERY s.a.l");
/* load JDBC drivers */
try {
String url = "jdbc:odbc:DataEntry";
Class.forName( "sun.jdbc.odbc.JdbcOdbcDriver" );
connection = DriverManager.getConnection( url );
System.out.println( "Connection Suucessfull");
catch ( ClassNotFoundException cnfex ) {
// process ClassNotFoundExceptions here
cnfex.printStackTrace();
System.out.println( "Connection UN Suucessfull");
catch ( SQLException sqlex ) {
// process SQLExceptions here
sqlex.printStackTrace();
System.out.println( "Connection UN Suucessfull");
catch ( Exception ex ) {
// process remaining Exceptions here
ex.printStackTrace();
System.out.println( "Connection UN Suucessfull");
/* Intializing global values */
dataBuffer = new int[60];
/* Start all threads */
/* Start filling data file in global array */
loadData dataFile = new loadData();
dataFile.start();
setData setdata = new setData();
setdata.start();
/* Adding control to window application */
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent windowevent)
// setDefaultCloseOperation(0);
System.exit(0);
public void windowDeiconified(WindowEvent eve)
setState(0);
addComponentListener(new ComponentAdapter() {
public void componentResized(ComponentEvent componentevent)
setSize(500, 500);
Dimension dimension1 = Toolkit.getDefaultToolkit().getScreenSize();
if(dimension1.width == 800 && dimension1.height == 600)
setLocation(150, 25);
else
if(dimension1.width == 1024 && dimension1.height == 768)
setLocation(200, 100);
/* Setting the location of the application on the screen */
Dimension dimension = Toolkit.getDefaultToolkit().getScreenSize();
if(dimension.width == 800 && dimension.height == 600)
setLocation(150, 25);
else
if(dimension.width == 1024 && dimension.height == 768)
setLocation(200, 100);
/* Constructing the main menu */
JMenuBar bar = new JMenuBar();
setJMenuBar( bar );
JMenu fileMenu = new JMenu( "File");
fileMenu.setMnemonic( 'F' );
JMenuItem mainItem = new JMenuItem( "Main page" );
mainItem.setMnemonic( 'M' );
mainItem.addActionListener (
new ActionListener() {
public void actionPerformed( ActionEvent e )
CardManager.show(MainManager, "main");
fileMenu.add( mainItem );
JMenuItem dataItem = new JMenuItem( "Database page" );
dataItem.setMnemonic( 'D' );
dataItem.addActionListener (
new ActionListener() {
public void actionPerformed( ActionEvent e )
CardManager.show(MainManager, "data_base");
fileMenu.add( dataItem );
JMenuItem printItem = new JMenuItem( "Print" );
printItem.setMnemonic( 'P' );
printItem.addActionListener (
new ActionListener() {
public void actionPerformed( ActionEvent e )
PrintUtilities.printComponent(MainManager);
fileMenu.add( printItem );
JMenuItem exitItem = new JMenuItem( "Exit" );
exitItem.setMnemonic( 'P' );
exitItem.addActionListener (
new ActionListener() {
public void actionPerformed( ActionEvent e )
System.exit(0);
fileMenu.add( exitItem );
bar.add( fileMenu );
JMenu figureMenu = new JMenu( "Figures");
figureMenu.setMnemonic( 'G' );
JMenuItem thicknessItem = new JMenuItem( "Thickness" );
thicknessItem.setMnemonic( 'T' );
thicknessItem.addActionListener (
new ActionListener() {
public void actionPerformed( ActionEvent e )
CardManager.show(MainManager, "thickness");
figureMenu.add( thicknessItem );
bar.add( figureMenu );
JMenu helpMenu = new JMenu( "Help");
helpMenu.setMnemonic( 'H' );
JMenuItem aboutItem = new JMenuItem( "About us" );
aboutItem.setMnemonic( 'A' );
aboutItem.addActionListener (
new ActionListener() {
public void actionPerformed( ActionEvent e )
JOptionPane.showMessageDialog(null, "Engineer Bilal Haidar (Computer & "+ "Communication Engineering)\n\n All Rights Reserevd. @ 2002",
"About me...", JOptionPane.PLAIN_MESSAGE);
helpMenu.add( aboutItem );
bar.add( helpMenu );
/* Initializing the panels */
c = getContentPane();
c.setLayout(new FlowLayout());
CardManager = new CardLayout();
MainManager = new JPanel(false);
MainManager.setLayout(CardManager);
c.add(MainManager);
javax.swing.border.Border border = BorderFactory.createEmptyBorder(10, 10, 5, 10);
MainPanel = new JPanel(false);
MainPanel.setLayout(new BoxLayout(MainPanel, 1));
MainPanel.setBorder(border);
ThicknessPanel = new JPanel(false);
ThicknessPanel.setLayout(new BoxLayout(ThicknessPanel, 1));
ThicknessPanel.setBorder(border);
fieldsPanel = new JPanel(false);
fieldsPanel.setLayout( new BoxLayout( fieldsPanel,1));
fieldsPanel.setBorder(border);
sub_panel = new JPanel(false);
sub_panel.setLayout( new BoxLayout(sub_panel,0) );
sub_panel.setBorder(border);
thick_figure = new JPanel(false);
thick_figure.setBorder(border);
/* Filling the main panel */
JLabel jlmain = new JLabel("Main Page");
MainPanel.add(jlmain);
timezone = showTime(new Locale("en", "US"));
JLabel jltime = new JLabel(" " + timezone);
MainPanel.add(jltime);
MainManager.add(MainPanel, "main");
/* Filling the thickness panel */
num_of_hits = 0;
next_index = 0;
/* fill in with ero values for everything*/
/*display the figure*/
ThicknessPanel.add(thick_figure);
JLabel blanklabel = new JLabel(" ");
ThicknessPanel.add(blanklabel);
JButton build_fig = new JButton("Draw Figure");
build_fig.addActionListener(
new ActionListener() { // anonymous inner class
public void actionPerformed( ActionEvent e )
if ( num_of_hits == 0 )
/* draw figure based on first 20 points in the array */
next_index = num_of_rec;
else
if ( num_of_hits > 3 )
JOptionPane.showMessageDialog(null,"No more data to draw","Error Drawing",JOptionPane.ERROR_MESSAGE);
else
/* draw the figure starting the data from index 20*/
next_index = next_index + num_of_rec;
num_of_hits += 1;
ThicknessPanel.add(build_fig);
MainManager.add(ThicknessPanel, "thickness");
/* filling the database panel */
label1 = new JLabel(" ",SwingConstants.CENTER);
welcome_label = new JLabel(" Database Page ",SwingConstants.CENTER);
label2 = new JLabel(" ",SwingConstants.CENTER);
fieldsPanel.add( label1 );
fieldsPanel.add( welcome_label );
fieldsPanel.add( label2 );
field_label = new JLabel(" Enter your name: ");
data_entry = new JTextField( 10 );
sub_panel.add( field_label );
sub_panel.add( data_entry );
fieldsPanel.add( sub_panel );
JButton add_data = new JButton( "Add me" );
add_data.addActionListener(
new ActionListener() { // anonymous inner class
public void actionPerformed( ActionEvent e )
try {
Statement statement = connection.createStatement();
String get_field;
get_field = data_entry.getText();
String query = "INSERT INTO data (anyField) VALUES ('"+get_field+"')";
int result1 = statement.executeUpdate( query );
if ( result1 == 1 )
JOptionPane.showMessageDialog(null, "Thanks for the info..."," Data Entry Success",JOptionPane.INFORMATION_MESSAGE);
data_entry.setText(" ");
else
JOptionPane.showMessageDialog(null, "Sorry, your name was not added...","Data entry error",JOptionPane.ERROR_MESSAGE);
catch ( SQLException sqlex ) {
// process SQLExceptions here
sqlex.printStackTrace();
System.out.println( "Connection UN Suucessfull");
catch ( Exception ex ) {
// process remaining Exceptions here
ex.printStackTrace();
System.out.println( "Connection UN Suucessfull");
fieldsPanel.add(add_data);
MainManager.add(fieldsPanel, "data_base");
/* display time */
Timer timer = new Timer(1000, new ActionListener() {
public void actionPerformed(ActionEvent actionevent)
timezone = showTime(new Locale("en", "US"));
setTitle("PHOENIX MACHINERY s.a.l " + timezone);
timer.start();
public static void main(String args[])
FinalMachine finalmachine = new FinalMachine();
finalmachine.setSize(500, 500);
ImageIcon imageicon = new ImageIcon("images/pc.gif");
finalmachine.setIconImage(imageicon.getImage());
finalmachine.show();
public static String showTime(Locale locale)
java.util.Date date = new java.util.Date();
byte byte0 = 2;
DateFormat dateformat = DateFormat.getTimeInstance(byte0, locale);
String s = dateformat.format(date);
return s;
/* Thread loadData starts here */
public class loadData extends Thread
public void run()
try {
readMyFile();
read_flag = 1;
notify();
catch( Exception x )
System.out.println("The following error occured in LoadData thread : "+x.toString() );
} // run() ends here
/* method read file inside thread loadData */
void readMyFile() {
String record = " ";
recCount = 0;
try {
tem_file = new File("mydata.dat");
data_file = new FileReader(tem_file);
b_data_file = new BufferedReader( data_file );
record = new String();
while ( (record = b_data_file.readLine()) != null ) {
dataBuffer[recCount] = Integer.parseInt(record);
recCount += 1; }
b_data_file.close();
catch (IOException e) {
System.out.println("Uh oh, got an IOException error!");
e.printStackTrace();
} // end of readMyFile()
} // thread loadData ends
public class setData extends Thread {
public void run()
try {
while ( !read_flag ) {
try { wait(); }
catch( InterruptedException e ) {
e.printStackTrace();
} // end while
for(int index = 0; index < 60; index++)
System.out.println("Array["+index+"] = "+dataBuffer[index]);
catch( Exception x )
System.out.println("The following error occured in LoadData thread : "+x.toString() );
} // run() ends here
the only added thing is the setData thread, i want this thread to start printing out the array whenever, loadData thread has finished filling the data inside the array please i need ur help.
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