I write this program to connect the FTP Server by using the package commons-net-1.4.1.jar which i download from http://jakarta.apache.org/site/downloads/downloads_commons-net.cgithe code is below .It is no problem when I compile ,but it causes some problem when i run it .import ...

this my codeimport java.io.*; import java.net.*; import java.*;class UDPServer { public static void main(String args[]) throws Exception { UDPServer t = new UDPServer();DatagramSocket serverSocket = new DatagramSocket(5551); while(true) { DatagramPacket receivePacket = new ...

hi 'm gettin this error java.lang.NullPointerExceptionat com.att.adv8.servlets.cis.RequestHandler.doPost(RequestHandler.java:27)n line 27 of my program is request.getRequestDispatcher("../cis/add_"+fname+".jsp").forward(request, response)kindly help me to debug th error ...

I write this code :int a = 1;a = a++;System.out.println("a = " +a);It printed a= 1; Anybody know why ? Thanks alot.

Assuming I have an interface like to following:public interface Test <T> {void test ( T arg0 );void test ( T arg0, Object arg1 );}I would like to reference to both "test"-methods using "{@link #test(T)}" and "{@link #test(T,Object)}".But this generates an error telling me "test(T)" and ...

Ok, my problem,I have a java application that reads in Currencies , now when I read in the correct currency symbol it works 110% and Im delighted with it.....however when I read in a dud currency it crashes and the application never completes what it is suppopsed to.......Is there anyway of ...

Hello everyone, I am executing the next code...import org.xml.sax.InputSource;import javax.xml.xpath.*;import org.apache.xpath.NodeSet;public class peos {public static void main(String[] args) {try {XPath xpath = XPathFactory.newInstance().newXPath();String expression = ...

Hello,i am currently ubdertaking an introduction to programming coarse and for one of my assignments i have been asked to create a program that will read read a file that contains the number 1-10 in this format;12345678910The program must read these numbers, print them, find there sum then ...

Hi, I am looking solution for java.lang.OutOfMemoryError: Java heap space> without increasing the heap memory.... I mean vm argument from " -Xms26M to higher values Regards,Rocky

I'm not really sure how to debug this. Supposedly the Java app being run crashes out and leaves behind an error log (as below). Apparently it happens with the latest JVM too, on multiple machines.I guess the "Top of Stack", "Instructions" or "Native Frames" bits are most important but I don't ...

import java.io.*;import java.lang.String.*;import java.util.*;public class ReadFile {//--< main >--//public static void main (String[] args) {ReadFile t = new ReadFile();t.readMyFile();}//--< readMyFile >--//void readMyFile() {String line = null;String dcn = null;String pfn = ...

javascript:objPO.openProductImages()when i click on picture it does not appear n when i scroll to the clear image bottom left of window states error on page and the following error above..javascript:objPO.openProductImages()plz help. i have downloaded latest java sun n reinstalled it... i ...

javascript:objPO.openProductImages()when i click on picture it does not appear n when i scroll to the clear image bottom left of window states error on page and the following error above..javascript:objPO.openProductImages()plz help. i have downloaded latest java sun n reinstalled it... i ...

javascript:objPO.openProductImages()when i click on picture it does not appear n when i scroll to the clear image bottom left of window states error on page and the following error above..javascript:objPO.openProductImages()plz help. i have downloaded latest java sun n reinstalled it... i ...

Hi,basically, i use the RandomAccessFile class to write to files. Max I've tried is around 20 files. There is only one file open at any given time.I have ensured this cos while debuggin I wrote "increment" and "decrement" methods, and ran them after I opened and closed a file respectively. ...

i have been trying to debug this code... But i m not able to.. Hope u guys can help me.. Thanks a milllion!!!import java.awt.*;import java.awt.event.*;import java.awt.geom.*;import java.awt.image.*;import javax.swing.*;import javax.swing.event.*;public class TryOut extends ...

i have begun receiving the following error message when i try to executejava programs - even those that have previously worked:Exception in thread "main" java.lang.NoClassDefFoundError: pgmname/javacan anyone provide some insight? thanks in advance.jps these are all simple programs that have ...

When I compile the mbare_projectOne.java I get the following error. There is a "^" under both the "S" of the word Scanner.G:\CS 151\mbare_projectOne.java:31: cannot resolve symbolsymbol : class Scannerlocation: class mbare_projectOneScanner keyboard = new Scanner(System.in);^G:\CS ...

hi all,i have an applet which has to be compatible with netscape, and Internet Explorer. and i am having a string str = *.xls,*.txt hardcoded in that applet. to convert this string into an array i am using the method String array[] = str.split(",");The problem is that this function is working ...

Hello Javadoc community, Any estimate on when the new MIFdoclet that works with J2SE 5.0 will be released? The currently available version is simply too old for newer code that uses features such as enum. Which bring me to a problem with an "out-of-the-box" use of the current MIFdoclet ...

i have a series of picture (1.PNG,2.PNG,3.PNG,4.PNG,5.PNG)I wan them to appear 1 by 1, making it look like animated picture. Wat kind of loop or how should i go about doing it? I tried for-loop, but i duno y it dun work...Thanks....

I keep on getting the following error when I compile my code...this is my first GUI so I am sure it is something stupidERROR: textfieldhandler is not abstract and does not override abstract method actioPerformed(java.awt.event.ActionEvent) in java.awt.event.ActionListnerMy Code:import ...

hi all,I am using the JVMTI interface to build a tool for monitoring the exceptions thrown by a JAVA app. I am able to display the class and the method that throws the exception but unable to display the actual exception thrown.How can u use the jobject exception in the event data structure to ...

## An unexpected error has been detected by Java Runtime Environment:## EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x6d965340, pid=2296, tid=1652## Java VM: Java HotSpot(TM) Client VM (1.6.0-beta-b59g mixed mode, sharing)# Problematic frame:# V [jvm.dll+0x125340]## If you would like to ...

Java VM version: 1.5.0Java VM vendor: Sun Microsystems Inc.Java VM: Sun Microsystems Inc. 1.5.0SecurityManager=org.kde.kjas.server.KJASSecurityManager@1554d32-Konqueror Java Console Help c: clear console g: run garbage collection h: show help m: show memory info s: print system properties t: ...

Hi allI'm a beginning Java programmer! I'm working with PHP, MySQL and HTML already for 3 months but Java still 2 weeks. Now i made this code (Ya, really made by myself :P):import java.applet.Applet;import java.awt.*;import java.awt.event.*;public class stapreken extends Applet implements ...

Hi can any one please tell the reason for following exception? we are using Sun jdk 1.4.2 with weblogic SP4:####<May 24, 2006 7:15:24 PM BST> <Error> <HTTP> <dowc582064> <bridgeserver1> <ExecuteThread: '43' for queue: 'weblogic.kernel.Default'> ...

Good afternoon everyone,I would like to prevent all comments & tags from being parsed by the Javadoc tools.I would like to have a Javadoc with only information exported from source code.Is it possible? Is there any option to enable?Thank

Hi there,is there a way to keep javadoc comments in classfiles?Reason: Not any company can spread the source for their algorithms, but as customer requests grow to use it with eclipse, code completion and javadoc, there is a need for such "feature".Any ideas? Not documented ...

I need to debug a java service which is invoked by a c app(*.exe) on windows.I use thejava -Xdebug -Djava.compiler=none -Xnoagent -Xrunjdwp:transport=dt_shmem,address=jdbconn,server=y,suspend=y -classpath D:/SOAM/3.0/samples/java/SampleApplication/bin MyServiceto call my java service then I use ...

Hi i just started programming in java.im running j2se 1.5.0 on windows xpim on the subject of classes and objects.here is my simple little code im trying to get to compile public class Newprog{public static void main(String[] args){Greeter myObjectGreeter = new ...

(Unknown problem with this posting, all my paragraphs are no more visible after preview - using IE6).Hi,using a heap analyser (jvmti based) on our application results in detecting multiple classes having exactly (really exacty - nothing about inner classes or stuff) the same fully qualified ...

I am new to Java. I have been tasked to create the documentation for our software project. hence I'm trying to use Javadoc for the technical documentation. The problem is if I run NetBeans IDE, and generate Javadocs today, then I will be missing all new Javadoc changes that developers put into ...

Is there a way to generate a list of filenames that lists out what has not been Javadoc'd? I have tons of Java files, and I need to produce a list to give back to the developers, that tells that what they haven't Javadoc'd. Thanks.

If I have a folder structure with .java files in it, and I want to point JavaDoc at it and have it tell me JavaDoc info, how do I do that? One way is to extend Doclet, but then I can only call it from the command line with javadoc -doclet ... However, what if I just want to do it from ordinary ...

Hi allI'm a noob in java and i got a problem (noobproblem :P).I got this code:import java.awt.*;import java.awt.event.*;public class stapfiguren extends Applet implements ItemListener, MouseListener, MouseMotionListener{Menu index, r, c, l;MenuBar balk;MenuItem r1, r2 , c1, c2, l1, l2;public ...

Is there a such method in JVMTI or JVMDI? I need to clean up some resources which are initialized in JVM_OnLoad method? e.g., I instantiate an object of a class, and I want to release the object when the jvm is unloaded.I have digged for some time, but cannot figure it out?Does anyone know the ...

I am new to Java. I was able to run this yesterday - (after trying a gaziion classpath manipulations. I go to run it today - and i get the infamous java.lang.NoClassDefFoundError:error. My jars are in the classpath echo $CLASSPATH ...

java.lang.ArrayIndexOutOfBoundsException: 312at GalaxyAngelGame.paintFrame(GalaxyAngelGame.java:518)at GalaxyAngelGame.update(GalaxyAngelGame.java:503)at sun.awt.RepaintArea.paint(Unknown Source)at sun.awt.windows.WComponentPeer.handleEvent(Unknown Source)at ...

Can anyone explain to me why Javadoc is so limited compared to Doxygen? I come from C++ background and I am relatively new to Java so maybe I am missing something here? My issues with Javadoc are as follows: 1) Why do I have to type explicitly {@link} tags? Doxygen will pick-up code references ...

I'm looking for a way to create a log of all GUI events (JButton clicks, JInternalFrame init/close/minimize, etc.) with a timestamp. I would like to do this without editing the application source code (sprinkling trace statements throughout the app source). Is JVMTI the way to go for this ...

We have a problem in our Swing application where we run out of memory.What happens is, we have a number of objects in a model-view-controller architecture. The user pushes a button that indicates they want to throw away their changes and start again.Originally at this point, nothing got cleaned ...

Hi,I am using Windows XP Service pack 2. with jdk j2sdk1.4.1_01.I was able to compile the LeakExample.java. I have set the classpath every thing. When i Execute LeakExample using java LeakExample Iam able to see the output.The above steps works if there is no package declared. I have created ...

I am getting this error. I know very little about javajava.lang.OutOfMemoryErrorat org.apache.tools.ant.Project.executeTarget(Project.java:1224)at org.apache.tools.ant.Project.executeTargets(Project.java:1063)at org.apache.tools.ant.Main.runBuild(Main.java:632)at ...

HelloI am trying to create a program that will print out the classes that are loaded after every garbage collectionAs a solution, I thought I would try and merge together the gctest and heapviewer examples that are in the demo/JVMTI folder.I have tried many different variations and still can抰 ...

Sorry, I don't know that much about the program. I'm only 17. But I don't know where else to ask. I tried downloading the new version but I get the error --"the java runtime environment cannot be loaded" followed by, "several java virtual machines running in the same process caused an ...

import javax.servlet.*;import javax.servlet.http.*;import java.io.*;import javax.sql.*;import java.sql.*;public class Student extends HttpServlet{Connection dbon;public void doPost (HttpServletRequest req, HttpServletResponse res)throws ServletException, IOException ...

Hi,I have the following code. I have come accross the importing libraries problem. I have download and installed the com.oreilly.servlet (cos.jar) in WEB-INF/lib catalog. But when I try to compile I get the following message:cannot find symbol symbol: variable ServletUtilslocation: class ...

When I open a particular application, I received in a box title: WJView Errorand in the box the word: ERROR:java.lang.NoClassDefFoundErrornothing else except the ok button and the red XAll the function in the applicatiion works except the "chart" which I just cannot have access because of this ...

Hello everybody, when compiling I get the following warning:Note: braccio2.java uses or overrides a deprecated API.Note: Recompile with -Xlint:deprecation for details.And re-compiling with the -Xlint:deprecation I get this message:braccio2.java:101: warning: [deprecation] ...