Java Forum

Hi All, I took my "Data Structures And Advanced Programming" coursework at Berkeley back when they taught this in Java 1.1. Since that time I have kept active in other languages, but haven't delved deeply into J2EE, for example. I am very interested in JSP/Servlets and the forthcoming Java HTML Tag Library. Currently my most proficient...

how to create java bytecode without using javac?

Dear all, When two systems are talking to each other by messaging mode (e.g. MQ), is there any way, system level and/or application level, to maintain transaction control (unit of work) across the two systems? Thanks. William

Hallo, ich möchte einen Mauslistner der bei gepresster Maustaste eine bestimmte Methode in einer schleife ausführt. jetzt habe ich die while schleife eingebaut aber das ganze läuft zu schnell so das der Mausreleased nicht mehr reagiert. Kann mir jemand weiterhelfen wie ich eine Schleife verlangsame. Danke für eure hilfe

Hello, I want to install the latest Netbeans/jdk1.4.2 combination from Sun but Installshield crashed with the message: Error in Instructions. Invalid jvm file name specified in LAUNCH. Invalid variable specification. Line number (5). I did a search for all jvm.dll and java.exe already installed on my computer (WinXP UK latest) and...

Hi Java gurus, I've copied the following program from the book "Java by Examples". It compiles well with javac. But it does not run as expected. EXPECTED: It is expected that, when you input something in the text field on the dialog window and click the OK button, the dialog window should disappear and the text should be printed on the...

Hi, I am new to internet programming. I would now like to create a platform which allow two users behind different boardband router to exchange files. There are only two users in the system and I have no right to modify the boardband router. I have check up some p2p applications like jxta and winmx. I have made some guess how the system...

Hello to all, I'm looking into providing mobile access to a web based administrative application currently running on .Net with MS SQL. The current architecture only supports the latest Internet Explorer browser due to elaborate dependencies on client side XML libraries, so I'm told. My problem is lack of knowledge of mobile client...

Hai Colleagues, I am using Tomcat 4.1.24 and JDK 1.4.0_03 in my winXP machine. I've transferred a set of folders(containing jsp files) into tomcat's webapps directory(to /webapps/bob , /webapps/sue) and i have added the folders bob, sue in my server.xml(in the context path). When i am trying to run jsp files from my browser, it works...

I've been wondering for awhile now about how this application works. The application helps you aim better at a yahoo game called pool, and somehow interacts with the java applet. Does anyone have any ideas how this author is communicating with this java applet? The below URL leads to the application. http://www.playbuddy.com/pool_buddy.htm

Hi, I have a question, when you use a random number generator Random() in a loop to generate say 50000 random numbers; is it any difference if you use different time interval between each loop instead of a fixed amount of time, for example using an exponential time interval instead of a fixed time interval in a loop which generates 50000...

I used jwsdp-1_0 (which comes with Tomcat 1.4.2) and my application runs fine. I have upgraded to Tomcat 1.4.24 (as I do not need the entire jwsdp). I now get the following expception: javax.servlet.ServletException: Object has been closed. Please help. Nigel

Hi, Why does not implement the class java.net.URL the method clone() (and does not implement the interface clonable)? Thank you cu Stephan

Hi all, Custom taglibs are driving me nuts! I'm trying to install a sample from the book I'm learning from, and it just falls over. Here's my class, which compiles without any problems: import javax.servlet.jsp.tagext.*; import javax.servlet.jsp.*; import java.io.*;

Hi all i am trying to replace a char sequence starting with -- and ending with \r\n using String.replaceAll() function. How will be the regular expression for that. Thanks Binu Jose

Hi, I am starting to use Eclipse as development environment for Java. When I compile a small simple Java program I get the error below. Anyone knows what is wrong? All help very much appreciated. Error occurred during initialization of VM java/lang/NoClassDefFoundError: java/lang/Object

Hey, I have a question about how secure the following will be.... I want to have a login form that posts to itself, so when it loads it checks if there is a username and password on the query list. If there is not, it asks for one. If there is, it checks to see if the information is valid. If it is not valid, it deletes the attributes...

I am looking for a resource that can help teach me about the benefits/disadvantages of using Java for Wireless applications. Would also like to learn about implementation issues and whatever else Is relevant along these lines. I am considering implementing some portal connectivity using java and would like to learn how and why I should choose...

I get the error Exception in thread "main" java.lang.NoClassDefFoundError when I type java app2 in the command prompt. I've tried moving to the jre directory and typed java c:\app2\app2, but it gives me the same exception. What could be the problem? Thanks in advance, Lem

He , I need to generate some random numbers, right now I am using: Random pk = new Random(); int a = pk.nextInt(540); and wondering if there is any other methods in java to generate random numbers. Thanks for any help. Rob

I am new at Java.. I installed j2sdk-1.4.2-nb-3.5-bin-windows on a Windows 2000 machine I can't find a "Javac"file......

This is from an application and not an Applet. I believe it goes to stdout but when I do a test and write an abitrary string and then do a search of the hard disk for the string, I can't find it. So, I suspect one has to create the file manually before using it. But I'll be damned if I can remember where. Thanks to anyone who'll take a...

Hi, I read and create some software in Java. One of my future project is to create a Symbian application. I have a very small question: Can i create the software on my desktop computer, and once finish, transfer it to my SymbianOS phone? Someone know a good web site about doing it? (I have search on this subject, but don't know where to...

There's a website I like to visit that has an user-interactive java application. There's a "visual applet" component and "control applet" component. (No, it's not an adult or porno site.) But the application isn't always usable because one or both of the applets have "failed," and has to be reset or something like that. I don't get it. ...

Hello! I have a java application (a game) which is supposed to run as a server. It is on a dedicated machine with MP capabilities, but currently running 1 Xeon processor with hyperthreading. The hyperthreading is causing the process to receive no more than 50% of the CPU cycles. I've been told that the app needs to be changed to be SMP...