Java

problem in bluetooth programming in java

14-Sep-08 22:10

what you can do is not painting directly on the dialog but on its background panel.

make a new class inheriting from javax.swing.JPanel, and overload the method paintComponent():

public void paintComponent(Graphics gr) {
    super.paintComponents(gr);
    gr.setColor(new Color(255, 255, 255));    //white
    gr.drawRect(0, 0, this.getSize().width, this.getSize().height);
}

then, in your dialog, just use this class as the Content Pane (in the constructor, or in the initialize() method if you use any):

JPanel panel = new YourJPane();
this.getContentPane().add(panel);

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SSN Validation

Sudheer.kumarmatta9-Sep-08 20:16

Sudheer.kumarmatta

9-Sep-08 20:16

Can any one post me the ssn validation code which was already there in this website in ASP.net.I need to write the code for the same rules and implementaion(Flow chart).

manju23reddy8-Sep-08 20:09

manju23reddy

8-Sep-08 20:09

hi i have the below code to start bluetooth over PC to accept data from mobile

but when i compile i will get the following errors

i have widcom bluetooth stack and bluecove.jar and intelbth.dll(i placed this in system32)

<br />
/**<br />
 *<br />
 * @author manjunath<br />
 */<br />
public class PC_Bluetooth implements Runnable<br />
{<br />
    private LocalDevice m_LocalDevice;<br />
    String connectionURL = "btspp://localhost:393a84ee7cd111d89527000bdb544cb1;" + "authenticate=false;encrypt=false;name=RFCOMM Server";<br />
    StreamConnectionNotifier server = null;<br />
    StreamConnection conn = null;<br />
    public Thread t1 = null;<br />
    <br />
     public  void startServer()<br />
    {<br />
        if (t1 != null)<br />
            return;<br />
        t1 = new Thread(this);<br />
        t1.start();            <br />
    }<br />
    public void PC_Bluetooth()<br />
    {<br />
      <br />
    }<br />
    public void config_bluetooth()<br />
    {<br />
        try<br />
        {<br />
            m_LocalDevice = LocalDevice.getLocalDevice();<br />
            m_LocalDevice.setDiscoverable(DiscoveryAgent.GIAC);<br />
            server = (StreamConnectionNotifier)<br />
            Connector.open(connectionURL);<br />
            conn = server.acceptAndOpen();            <br />
        }<br />
        catch (Exception e)<br />
        {<br />
            System.out.println(e.getMessage());<br />
        }<br />
        <br />
    }<br />
     public void run()<br />
    {<br />
        try<br />
        {<br />
            config_bluetooth();<br />
                  <br />
        }<br />
        catch (Exception e)<br />
        {<br />
            System.out.println(e.getMessage());<br />
        }<br />
          <br />
    }<br />
    <br />
}<br />
<br />
<br />
and the exceptions are:<br />
init:<br />
deps-jar:<br />
compile:<br />
run:<br />
here to do..all<br />
BlueCove version 2.0.2 on widcomm<br />
Exception in thread "Thread-0" java.lang.UnsatisfiedLinkError: getProperty0<br />
        at com.sun.midp.Configuration.getProperty0(Native Method)<br />
        at com.sun.midp.Configuration.getProperty(Configuration.java:34)<br />
        at com.sun.midp.io.InternalConnector.<clinit>(InternalConnector.java:91)<br />
        at javax.microedition.io.Connector.open(Connector.java:158)<br />
        at javax.microedition.io.Connector.open(Connector.java:138)<br />
        at javax.microedition.io.Connector.open(Connector.java:120)<br />
        at pc_interface.PC_Bluetooth.config_bluetooth(PC_Bluetooth.java:42)<br />
        at pc_interface.PC_Bluetooth.run(PC_Bluetooth.java:56)<br />
        at java.lang.Thread.run(Thread.java:595)<br />
BlueCove stack shutdown completed<br />
BUILD SUCCESSFUL (total time: 3 seconds)<br />
<br />
<br />
please suggest me...<br />
<br />

Abstract Data Types

Kevin Marois8-Sep-08 16:51

Kevin Marois

8-Sep-08 16:51

I have been studying and Googling Abstract Data Types in Java, and I don't get it. The examples all seem to be overly complicated.

Can someone point out or provide a simple code example of an ADT in Java?

Thanks

Everything makes sense in someone's mind

toxcct8-Sep-08 21:05

8-Sep-08 21:05

what don't you understand ?
the use of templates ?

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Kevin Marois10-Sep-08 8:37

Kevin Marois

10-Sep-08 8:37

I don't understand what an ADT is. A code example would be nice.

Everything makes sense in someone's mind

toxcct10-Sep-08 9:16

10-Sep-08 9:16

have you googled for it first ?

did you read this[^] nice article ?

for what I uuderstand (but i'm not used to this denomination of "Abstract Data Type"), ADT are types (classes) which are data sets and provide generic operation on the objects it contains.

what don't you understand in this ?

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Reagan Conservative18-Sep-08 11:42

Reagan Conservative

18-Sep-08 11:42

Did you look in the Java Tutorials? Try this link --- maybe it will explain Abstract Types in reference to Java

http://72.5.124.55/docs/books/tutorial/java/IandI/abstract.html[^]

John P.

Session problem

Mogaambo1-Sep-08 20:01

Mogaambo

1-Sep-08 20:01

hi, i am facing a typical problem in my project which is an online exam
developed using spring framework and mysql 5.5 and tomcat 5.0, My problem is that when the user suppose 80 are logged in then their sessions clashes with each other means the some times the page which has to be served only to A also served to B, on the top of page displaying username A and all the questions of A are displayed to B , I don't know y this is happening it occurs only when there are more than 50 users. Is i have to do any optimization to tomcat

“You will never be a leader unless you first learn to follow and be led.”
–Tiorio

"Coming together is a beginning, staying together is progress, and working together is success." Henry Ford

Re: Session problem

tiantian_hello23-Sep-08 15:17

tiantian_hello

23-Sep-08 15:17

I think it's nothing to do with session..you should print some log and see what's really going on..

JAVA and J2EE

pearlugi28-Aug-08 23:37

pearlugi

28-Aug-08 23:37

1.I have Pie Chat into normal HTML Page
2.If i am clicking Export Button then it will convert into
JPG and JPEG file into DeskTop
3.I am Using Eclipse IDE with GEF and MEF

Please Kindly Help and Send Code and Tips.

With Thanks
Pearl
Singapore

toxcct1-Sep-08 19:25

1-Sep-08 19:25

so WTF is question about ?

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CPallini19-Sep-08 1:58

19-Sep-08 1:58

The question is:
"Have you such fu***** code?"
Laugh | :laugh:

as th OP belongs to the 'plz plz gimme codez urgent' category.
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

toxcct19-Sep-08 2:06

19-Sep-08 2:06

so you're roaming on the Java boards now ?! Cool | :cool:

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CPallini19-Sep-08 2:50

Java Design Patterns: A Tutorial's CD-ROM

19-Sep-08 2:50

you know, its a slow, slow friday...
Smile | :)

aecordoba28-Aug-08 5:54

aecordoba

28-Aug-08 5:54

Hi there!

Please, somebody can tell me where can I find to download the CD-ROM that accompanies the book "Java Design Patterns: A Tutorial" by James W. Cooper?
Or can somebody share it?

Thank you in advance.

[Adrián Córdoba]

CPallini19-Sep-08 2:52

19-Sep-08 2:52

Usually you may find such CD inside the book.
Big Grin | :-D

aecordoba19-Sep-08 3:02

aecordoba

19-Sep-08 3:02

Yeah, I know. But my CD-ROM is damaged.

[Adrián Córdoba]

CPallini19-Sep-08 3:06

19-Sep-08 3:06

aecordoba wrote:
Yeah, I know. But my CD-ROM is damaged.

Then kindly ask the publisher for its replacement Smile | :)

Custom Window Painting Problem

Rajesh R Subramanian28-Sep-08 19:34

Rajesh R Subramanian

28-Sep-08 19:34

Many are stubborn in pursuit of the path they have chosen, few in pursuit of the goal - Friedrich Nietzsche

.·´¯`·->Rajesh<-·´¯`·.
[Microsoft MVP - Visual C++]

daxfrost28-Aug-08 3:33

daxfrost

28-Aug-08 3:33

I have a JFrame which i extend and set undecorated.
I have made my own resizing of the frame possible with mouse down, up and pressed
events etc...

On my paint event I wish to draw my own custom imagery for the form with an offscreen image
and finally draw it to screen. Any swing component I put on the JFrame flickers on each
repaint when I resize... if anyone has any answers to this I would be most thankful...
so thanx in advance! Wink | ;)

javdax

There Are 10 Kinds Of People,
Those That Understand Binary,
And Those That Don't

Multiple JRE Version Problem

Abhijit Jana20-Aug-08 23:30

Abhijit Jana

20-Aug-08 23:30

Hi All,
I am a .net developer , i need small help in Java Runtime Enviroment. We are working on a web based Application (Asp.net ) which used some Applet . Now This Applet Running only on JRE 1.5 not in JRE 1.6.
If Client System has JRE 1.6 Install Applet is not ruuning, if 1.5 installed , its working fine. now main problem is when Both are instaled i want our applet will run by JRE 1.5 not with 1.6 , but its takes latest 1.6 .

Please help me out as i dont have much idea on java !!!

cheers,
Abhijit
Check My Latest Article

Re: Multiple JRE Version Problem

toxcct21-Aug-08 2:50