Shashi Kanta

Hi Pradeep,
Do you mean, struts cannot do that, and is meant for writing session data only?
Please clarify a little more in details..
Thanks,
Shashi

Hi,
I am a newbie to struts, but of late I am seeing that it is gaining so much importance, that everyone is talking about it.
And, as a result of that, companies are mentioning it in the required skill sets for recruitment adverisemnts.
When I just grazed through struts, I found that it uses MVC architecture.
What is confusing me is EJB does just that, and then why struts?
Is it because, it's smaller? What are the advantages it has over EJB?
TIA,
Shashi

oops! the message got truncated.
here it is again.
remove the main method from the calcg class, and put in a JApplet subclass.
Also, create the instance of the calcg class in the init() method of the JApplet.
e.g.
public class CalJApplet extends JApplet{

public void init(){
//create the instance of calcg
}
public static void main(String args[]){
//create the instance of calcg
}
}
-Shashi

Remove the main method from your current class i.e. calcg and put it in a JApplet class
Have a JApplet class
[code]
public class CalJApplet exten

Remove the main method from your current class i.e. calcg and put it in a JApplet class
Have a JApplet class
[code]
public class CalJApplet exten

Hi ,
I have seen that most of the work arounds given to come out of this problem is to use threads.
I tried, but not able to interrupt the main thread.
Here is a snippet of my code.
public MyClass implements Runnable{ Thread m_thread = null; int m_requiredVal = 0; public void startProcess(){ m_thread = new Thread(this); m_thread.start(); } public void run(){ try{ doSomething(); processSomethingMore(); readFromUrl(strUrl); processUrlInfo(); doFinalTest(); }catch(Exception e){ e.printStackTrace(); //end of program } } public readFromUrl(String website) throws Exception{ try{ URL url = new URL(website); URLConnection urlConn = url.openConnection(); //need to start a thread that will interrupt the main thread //i.e. m_thread or throw an Exception in this method, after //polling for some time to see if the value of m_requiredVal is no more //0 (zero). //something like this //MyThread myThread = new MyThread(this, m_requiredVal); //myThread.start(); InputStream is = urlConn.getInputStream(); // here it hangs sometimes in Netscape 4.79 .... ...... m_requiredVal = 10; }catch(Exception e){ throw new Exception("Not able to read info from URL"); } } } class MyThread extends Thread{ int reqVal; MyClass myClass; public MyThread(MyClass myClass, int reqVal){ this.reqVal = reqVal; this.myClass = myClass; } public void run(){ int i = 0; while(i < 30 && reqVal = 0){ try{ sleep(1000); }catch(InterruptedException ie){ } } if(i==30){ //throw exception in MyClass.readFromUrl() or interrupt the main thread of MyClass. //how to do this? } } }
How can this be implemented in the side thread? Or is there a different solution altogether so that URLConnection.getInputStream() does not get blocked?
Thanks,
-Shashi

Hi,
I am trying to access an HTTP url and get the file size and type of the url resource.
Using URLConnection.getContentType() works fine for all IE platforms, but when Java Plugin 1.3x is installed it this method returns null.
has anyone faced this problem? If so, could you provide a solution for this?
Thanks,
Shashi

Hi,
Use java.util.zip.ZipInputStream for unzipping the zip file, and use ZipInputStream.getNextEntry() to get the ZipEntry object representing each file in the zip file. From the ZipEntry object you can get the name of the file inside the .zip file.
-Shashi

Hi,
I need to access a protected url and get it's resources through an Applet. I am able to do that using IE and NS 7.x.
But, I face a problem in NS 4.7x.
I pass the user credentials through the well known steps,
URL url = new URL("http://abcdefg.com/myFile.zip"); URLConnection urlC=url.openConnection(); String userPassword = username + ":" + password; String encoding = new Base64Converter().encode (userPassword.getBytes()); urlC.setRequestProperty ("Authorization", "Basic " + encoding);
In Netscape 4.7x, after this step, it hangs. I'm not able to get the InputSream. If I get, I get the redirection html file.
What went wrong here?
Then, I passed the username and password in the url itself, like this:
http://username [email protected]/myFile.zip
This works fine in NS 4.7x now. But, the problem is I get the HTTP authentication dialog, which I don't want.
Can someone please tell me how to suppress the dialog in NS 4.7x?
Thanks in advance,
-Shashikanta

Hi,
You need to sign your applet to do that. For testing purpose you can self sign your applet (jar) using Sun's jarsigner utility.
-Shashikanta

Ya, u need to have a look at some books describing common algorithms. Also u need to have a look at Data Structures. If u can study Design Patterns too, then u'll master any programming language!
Shashi

Hi Divya,
Use the class FileDialog which is there in the awt package.
Thats all !
Shashi

uc = (HttpURLConnection)u.openConnection();
I hope uc above is an URLConnection object.
if so change the code to:
uc = u.openConnection(); //no need to type cast
and remove the lines after this line including uc.setRequestProperty()
these lines are needed in case of POST method, in your case, it is GET method.

Shashi

Hi Alex,
As for making your JComboBox listen to events, you can add an ItemListener to it.
And as for finding out if the vector has changed it's size, you can check the size of the vector, in the ItemStateChanged() method, using Vector class's method size() which will return the number of elements currently in the vector.
I hope that's the question you asked!
Shashi

Hi Bindu,
JTextField doesn't have a similar method like setEchoChar().
But javax.swing provides a component JPasswordField for passwords field.
The default character displayed for whatever you type is '*'. If you want to change that, you can use setEchoChar(char c) method.
So, use JPasswordField for password fields.
Shashi