Is there any method by which programmatically we can find if a class is serializable?

hi All, Can anyone please help me to know how Cocoon can be used with Java on Tomcat server.Any links,tutorials or books available for this.I read Orielly's Chapter 9,but couldn't understand how to write our own Producer,can anyone throw some light on this.Thanks in ...

Hai all,I am doing a project where the back up word files are to be displayed on the browser . If it is a text file we can give it as a input stream and if it is a image , it will take it as a .jpg . Then how the .doc can be inputed(I want the MS-word files to be inputed) .If u have a solution ...

Can you help me?

Hi there, I have a GUI which as part of its operation calls a method that does some fairly intesive JDBC work (lots of adds and updates) which takes roughly 2 minutes...During this time, if I click away from the UI, when I click back, it fails to re-draw (giving the user the impression it has ...

Hi there.... :)Is it possible to include algebraic signs in wing such as those for integral, sum, differential? Do you know hos to do this?ThxCharly

How do i implement undo,redo in textarea.

hi guys, can anybody help me out on developing a videoconferencing using jmf. ASAP PLZZZZZZZ.my email id is .siddhartha_bh@yahoo.comsiddhartha

Hello there!!! I have an applet that sends text messages to a remote pc (chat application). I want to send a text message once the user closed the browser or another page is displayed or in general when the applet is no longer running. I tried to use the stop() method by it seems that it dont ...

How to wrap a text in textarea.

Hi Can Anyone help me with creation of log files. I am writing an application that uses JSP and Beans. It also connects to the database. I would like to know the status of the program by writing all information to the log. what are the things that i need to do for it.Thanks for the helpSandeep ...

Hi all,I would like to implement a system that can communicate with different modules in different computers (hosts). Why I intend to do this is I want each module can use its own computer's procesing power and share the workload. I learn that Java RMI can let me to do this. Does anyone have ...

I have written a Java Applet to connect to the Oracle (8.0) database. My Applet is residing in a remote server. The Applet connected to the database when run in Internet Explorer, but failed to connect to the database using Netscape Navigator (4.08) and resulted in the following ...

hi guysi have this problem where i have an array with some duplicate elements in it. and while printing it out, i want to display each element only once. how do i do it? helpthanks all

I want to assign the string "comp[1] in to class "action"But i don't know how to make the class "action" to accept string assign on it.Could anybody help me plz~~thanks a lot^^ i try many times, but is cause some error as below:"Applet1.java": Error #: 300 : constructor action() not found in ...

I am developing a GUI, which is similar to file explorer in Windowsbut my problem is I don't have any physical file structure, i will get an array of strings like thiscom.a.b.c.fileC1com.a.b.fileb1com.a.b.fileb2com.a.b.e.filee2com.a.b.c.d.fileD1com1.a1.b1.fileb11from this input I need to ...

Window XP don't support Java?

I got an annoying problem with -classpath problem. Assume that I don't set additional .jar/dir. in CLASSPATH env. var (I like working with shell script):public class Testing{public static void main (String []argv) {System.out.println("abcde");}} I compile the code, and I run the class using ...

I need to read an HTTPS URL and store the response within a table . How will I manage to do it from within a servlet using URLConnection and openStream as it does'nt work .How will JSSE help in this regard .Since I also need to give the userid and password to get into the file and read the ...

i have a JApplet.i can open that applet in appletviewer.but i could not open in browser.when i call the applet class file from HTML,is giving error.i'm using JDK1.3 and javawebserver2.0 with windows NT..now i have set the classpath like c:\jdk1.3\jre\lib\rt.jarerrors are:In IE5.5:(JDBCJTree is ...

i have a JApplet.i can open that applet in appletviewer.but i could not open in browser.when i call the applet class file from HTML,is giving error.i'm using JDK1.3 and javawebserver2.0 with windows NT..now i have set the classpath like c:\jdk1.3\jre\lib\rt.jarerrors are:In IE5.5:(JDBCJTree is ...

Hi all, I have made a Java application and now i want to made a timelimited and workstation specific demoversion.Any advice.Help will be appreciated.Alex

OK, I can beautify my tooltips with HTML, easy: lblMyLabel.setToolTipText("<html><b>Hello!</b>");I can even make them multiline or place the tooltip contents into a table and modify everything with CSS, but there is still one thing I don't know how to make. How to get an ...

HI thanks for replyingbut it didnt make much sense to me.please could you give me the same in an applicationand be more explicit in explanation. please tell me the method of implementing passwordprovision for some folders/files in the system.it should ask for password authentification ...

I'm having problems with my applet, it compiles & run successfully with appletviewer. However it wait forever to Loading Applet with the browser.I have already used the HTML converter 1.3 that i downloaded from Sun's website & Java Plugin 1.3.Pls help ...The following is my code:- ...

I need to know the country name and the region name from which a request is made to a webpage. i knew that getAvailabelLocales method (java.text.DateFormat) will give the list of the locales. but i want to know how can i get the id for it.if anybody knows, pls post the answer to ...

I tried to update some values to a particular cell of the JTable but it doesn't show the updated value.I tried using the fireTableCellUpdated() but it doesn't seems to work.any idea how to show the updated value without having to refresh the whole table?Thanks alot! ...

Hi all,Under what conditions that the method paint will returns without dong any work?I have a non visible JPanel and I am intent to let it generate a new JLabel with its own image painted on the JLabel. But so far what I have here is a blank JLabel.The preferredSize of the JPanel is greater ...

What meens "Duke Dollars available" ?I`m from Austria and dont speak perfect english.I understand the most things, but "Duke Dollars" ?Wolfgang

Hi,"list" and "get" methods work well when I'm connected to one server but doesn't work at all when connected to another one: onto that one I can log on without any problems and all functions work using "CuteFtp", but errors come when I try to use "list" and "get" from FTPClient package : ...

i want to install JSDKEE over JSDK installation.how do i go about this? can i just intall it on the same directory (and overwrite some of the files)? can u guys point me to a web help guide regarding this one?

HiI am using session tracking in servlets in my application. AFter the login page, i am setting sessionid into session and checking this in every servlet after that for valid session. It works fine. Now i save the url at some point in the middle of application into favourites of browser and ...

Hi Guys,I have a problem with passing an array into an ActionListener.The relevent program issues are:Module DrawJPanel - this extends JPanel to allow drawing directly onto the panel* public void drawWaveform(int[] waveformArrayModule SynthEngine - this provides sound synthesis using the JSyn ...

I used this line to launch Netscape from a java program, Runtime.getRuntime().exec("C:/Program Files/Netscape/Program/netscape.exe"); but there is a IOException. C:/Program Files/Netscape/Program/netscape.exe is where I have the Netscape. Also if I want to add a file to this commande, how ...

I had an swing Application which was written in jdk 1.2 which used JInternalFrame but now when i compiled and ran that under jdk 1.3 it did not show anything except the main frame. i tried setting layout of main frame to both DesktopPane or others available before but of no use. Then i suddenly ...

which are on different computers please tell me to which part of java technology this question belongs ,and tell me some resoures (book or website ,demo is better) thanks!

How can I collect the data from a FORM element?

Can anyone teach me how to code an chat program?I just need a very basic chat program.Can JFILeChooser call out font and printer dialog?

I want to build a multiple input dialog box (for the user to enter 2 integers and a string, for example)...Any suggestions?

Hi all,I have a class/interface called A, now I have seen that I can declare a method of type my class/interface A. But as I am very basic in java I do not understand what is the benefits of doing that. Instead of just declaring my methods of types such as String void etc. I hope you understand ...

hello iam trying to get the simple Java applet that searches multipleInternet search engines. can any one help mehow to do in simple way....

Hi all,i would be glad if somebody could help me out here.To save the date in a database, i use threeJComboBoxes:jComboBoxYearjComboBoxMonthjComboBoxDay.These 3 fields are filled with the days, months and years at the initialization of a dialogbox by the method:public void ...

Hi,"list" and "get" methods work well when I'm connected to one server but doesn't work at all when connected to another one: onto that one I can log on without any problems and all functions work using "CuteFtp", but errors come when I try to use "list" and "get" from FTPClient package : (I ...

I use sun.net.ftp ftp class upload txt fileWhen i use ascii mode,I want send "abcd\r\n......but in fact send .... 0x0A 0x00 0x0AIf I use binary mode,it is right.my code is.....ftp.ascii();ftp.binary();OutputStream out=ftp.put("test");.......fin.read(b);out.write(b);......Is it Ftp or ...

Hi all,I have a class/interface called A, now I have seen that I can declare a method of type my class/interface A. But as I am very basic in java I do not understand what is the benefits of doing that. Instead of just declaring my methods of types such as String void etc. I hope you understand ...

Thanks in advance!I met a problem while I write an application using JAXP, I want to parse a XML document and modify its contents ,but right now the JAXP1.1 doesn't support write the document object back to XML file, from the JAXP tutorial, they says that there is a class named ...

i am getting breaks in the sound output.i am reading from a wav file thru an audioinputstream andprocessing the audio(changing the samples etc)then i send the audio bytes to the source data line.there are breaks in the sound coming from speakers..if i do not send the processed sound to speaker, ...

...to avoid having to install the JRE on the target machine?

i am looking to but some extra ram however can anyone tell me how many pins i have how do i find out? 168 144 etc....

Hello,consider the following code:class Test2{public void method(Object o){System.out.println("Object Version");}public void method(String s){System.out.println("String Version");}public static void main(String args[]){Test2 t = new Test2();t.method(null);}} In this case the output is 'String ...