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Robot Simulation in Java
To fix the issue you can do Perhaps the easiest (if not best) place to start is the "Java2D" API: http://java.sun.com/products/java-media/2D/index.jsp
TAG :java
Date : October 23 2020, 11:12 PM , By : Amit Sahoo
what are aliases in ldap
should help you out There are two concepts - referrals and aliases. An alias contains the DN of another object, whereas a referral contains one or more URLs of objects. The URLs are usually, but not necessarily, LDAP URLs. The LDAP URL contains the s
TAG :java
Date : October 23 2020, 11:12 PM , By : Dan Pop
Calling class methods (static) from inside a velocity view page
help you fix your problem Since this came up in the top of my google search on this topic it seems like folks might like to see an updated answer when they get this on the top of their search... (found this here: http://velocity.10973.n7.nabble.com/U
TAG :java
Date : October 23 2020, 11:12 PM , By : user3848996
How to use Struts2 validation for conditional validation?
may help you . You can probably use an expression validator. If you're validating via XML, you should have something like:
TAG :java
Date : October 23 2020, 11:12 PM , By : user3848995
Multithreaded Java Program for Conway's game of life - contention at the border cells
hope this fix your issue I suggest having 2 int[][] arrays. Let's call them A and B. A will hold the values of all odd numbered "ticks" and B will hold the even numbered ticks.Initialize A to whatever your initial state looks like. Then let your thre
TAG :java
Date : October 23 2020, 11:12 PM , By : user3848991
How to handle multidimensional array?
will be helpful for those in need To work purely with arrays, see: http://www.ensta.fr/~diam/java/online/notes-java/data/arrays/arrays-2D-2.htmlFor example, to allocate everything you might do:
TAG :java
Date : October 23 2020, 11:12 PM , By : user3848976
Working with a giant matrix with Java
this one helps. There are about 10^80 atoms in the observable universe. So say you could store one bit in each atom, you need about 10^9920 universes about the same size as ours. Thats just to store one row.How many rows were you condiering? You will
TAG :java
Date : October 23 2020, 11:12 PM , By : user3848967
Fast Oracle Select [Huge Data]
With these it helps Oracle supports parallel DML. In particular this applies to SELECT queries. Ultimately the bottleneck will probably be the IO read speed. Either use faster disks or stripe the data accross many disks.Update
TAG :java
Date : October 23 2020, 03:00 PM , By : SKS
Is cayenne good choice for my requirement?
should help you out If I had to choose an ORM tool or a JPA provider, it wouldn't be Cayenne simply because it doesn't seem to be widely used so the community behind it isn't very large and this is a concern. There is thus no need to discuss technica
TAG :java
Date : October 23 2020, 03:00 PM , By : user3849235
Extjs with google Ajax Language Api
Hope this helps Can we use google AJAX Language API with EXTjs? I have tried example for translation, I have one html file: , Yes we can!
TAG :java
Date : October 23 2020, 03:00 PM , By : nitin gupta
Alfresco Community on Tomcat starts very slow
I wish this help you As with all performance issues there is rarely a magic bullet.Memory pressure - the app is starting up but the 512m heap is only just enough to fit the applications in and it is spending half of the start up time running GC.
TAG :java
Date : October 23 2020, 03:00 PM , By : Bingi
No tests found with test runner 'JUnit 4'
Any of those help this just happened to me. Rebuilding or restarting Eclipse didn't help.I solved it by renaming one of the test methods to start with "test..." (JUnit3 style) and then all tests are found. I renamed it back to what it was previously,
TAG :java
Date : October 23 2020, 03:00 PM , By : hadeel
XMLTask 1.16: Does it work with Ant so far?
wish of those help XMLTask 1.16 release notes does mention:
TAG :java
Date : October 23 2020, 03:00 PM , By : Ivan Marti
Google App Engine JAVA: How to add more than one parameter to the Task Queue?
this one helps. I wanted to use Queue tasks on my GAE application. I need to pass two parameters to my URL servlet runTasks. So i am doing this. But when I print the values for start and end it prints null for start and 15 for end. Am i doing anythin
TAG :java
Date : October 23 2020, 11:12 AM , By : rndmmthd
java.lang.OutOfMemoryError: Java heap space
hop of those help? Most of the answers have been centered around increasing your heap size from the default (which is 64MB). 64MB would explain why you are able to upload 54,574KB successfully because it's under that size, and I bet tomcat and your p
TAG :java
Date : October 23 2020, 11:12 AM , By : Sam
Is there a way in Java or a command-line util to obtain a Kerberos ticket for a service using the native SSPI API?
it helps some times Forgive me if I am misunderstanding you problem, but...The point of SSO type systems is that the client authenticates directly to the (separate) authentication server, and obtains a ticket from it. It then passes the ticket to the
TAG :java
Date : October 23 2020, 11:12 AM , By : ryan
Can I use JBoss MQ on JBoss 5? If so, how?
like below fixes the issue Actually JBoss Messaging is already being replaced by HornetQ.In JBoss Application Sever 6.0, HornetQ will be the default messaging provider.
TAG :java
Date : October 23 2020, 11:12 AM , By : AaronVilla
Jmockit expectations error
I wish this helpful for you It sounds to me as if you have defined the allowed number of invocations of a method on a mocked class. Do you have something resembling:
TAG :java
Date : October 22 2020, 11:12 PM , By : user3849587
Custom message with FacesContext.getCurrentInstance().addMessage is not displayed in page (JSF)
fixed the issue. Will look into that further I have two ideas.First, the message is added in the getText() getter. If h:messages is rendered before h:outputText, then the message might not be there yet when h:messages is rendered.
TAG :java
Date : October 22 2020, 11:12 PM , By : Dario Dorigo
Applet served by Java Web Start, resources requested to WEB Server before look in the JAR files
hop of those help? I solved this problem by adding an index to the JAR-file. After building your jar, run the command:
TAG :java
Date : October 22 2020, 11:12 PM , By : user3849572
How to retrieve and display images from a database in a JSP page?
This might help you Let's see in steps what should happen: JSP is basically a view technology which is supposed to generate HTML output. To display an image in HTML, you need the HTML element. To let it locate an image, you need to specify its src at
TAG :java
Date : October 22 2020, 11:12 PM , By : user3849533
Invoking JCL from Java
it should still fix some issue You can use the FTP interface to JES to submit JCL jobs:http://www.ehow.com/how_5213702_ftp-jcl-mainframe.html
TAG :java
Date : October 22 2020, 11:12 PM , By : user3849521
log4j Rolling file appender - multi-threading issues?
I wish this help you I have not encountered this issue myself, and from the bug report, I would suspect that it is very uncommon. Th Log4j RollingFileAppender has always worked in a predictable and reliable fashion for the apps I have developed and m
TAG :java
Date : October 22 2020, 11:12 PM , By : user3849519
Benefits and disadvantages of using java rmi
help you fix your problem The advantages and disadvantages are similar to those of any RPC-like (Remote Procedure Call) System. There is a superficial appearance of simplicity, because it objects which are in fact remote can be treated as though they
TAG :java
Date : October 22 2020, 11:12 PM , By : John White
random numbers in java
I wish did fix the issue. The class java.util.Random can generate pseudo-random numbers having a reasonably uniform distribution. Given a List of your service type:
TAG :java
Date : October 22 2020, 11:12 PM , By : Gallows
How to set formulas in cells using Apache POI?
hop of those help? The HSSFCell object has methods .setCellType and .setCellFormula which you need to call like this:
TAG :java
Date : October 22 2020, 11:12 PM , By : user3849476
Eclipse java.lang.ClassNotFoundException: com.google.gwt.dev.About
To fix the issue you can do Importing is not the same as compiling. Anyway, you need to associate your project with GWT. Have a look at http://code.google.com/webtoolkit/usingeclipse.html. It might be easier to import the code after creating a new pr
TAG :java
Date : October 22 2020, 11:12 PM , By : user3849473
java equivalent of mysql string search operator 'like'
will help you This is a good scenario for regex in Java. See details in the Pattern class JavaDoc. You can use these patterns in String.matches
TAG :java
Date : October 22 2020, 11:12 PM , By : user3849455
Where does ResourceBundle.getBundle("ResourceFile", new Locale("us", "US")) look for the f
seems to work fine You know java is looking for a properties file in a specific locale. You may be baffled why java keeps complaining it can't find a properties file that is right there. A few things to keep in mind when debugging this type of errors
TAG :java
Date : October 22 2020, 11:12 AM , By : Shelby
Can I generate an HPROF file at will?
like below fixes the issue Yes. You can generate an hprof file (containing heap memory usage) on the fly using the jmap tool, which ships with Sun's Java VM:
TAG :java
Date : October 22 2020, 11:12 AM , By : Yan Bloch
Have you ever succeed in developing high-load web-applications with JSF?
seems to work fine Sun JSF RI 1.0 and 1.1 were indeed performance hogs and it indeed became negatively in the news. However, since JSF RI 1.2 (Mojarra) around early 2006, which was maintained by a new, young and excellent dev team, a lot of performan
TAG :java
Date : October 22 2020, 11:12 AM , By : Rscar
Infinite While Loop in Java
With these it helps You don't have an input = keyboard.nextLine(); in your second while loop.You could refactor your code to only ask for new input when there is an error. So right after the sysout of 'ERROR...'
TAG :java
Date : October 22 2020, 11:12 AM , By : Lindsay
"Path login.page does not start with a "/" character" message exception after changing java version
I wish this helpful for you It looks like a request is made to "login.page", which as the exception indicates, does not start with a "/". Try requesting for "/login.page" instead.Most servlet libraries require that pathnames begins with a "/". For ex
TAG :java
Date : October 22 2020, 11:12 AM , By : user3849633
Web-application configuration outside or inside war file?
will be helpful for those in need Imho, outside seems the most convenient if you need to deploy the same war in different environments. Like, dev, itt, uat and production. Same build different configurations.
TAG :java
Date : October 22 2020, 11:12 AM , By : user3849617
Swing, Passive View and Long running tasks
Any of those help you could do something like the following, which will keep your GUI code in place and simply perform the work to get out of the EDT:
TAG :java
Date : October 22 2020, 11:12 AM , By : user3849612
How do I find maximum number of concurrent connections that a server can handle?
will be helpful for those in need We made a COMET server a while back and had enormous trouble testing the maximum number of connections it could support. Invariably we found that office networking equipment failed before we hit anywhere near the num
TAG :java
Date : October 22 2020, 11:12 AM , By : Ed Ward
Exception in thread "thread-4" java.lang.NullPointerException
like below fixes the issue Drop the default constructor Make your instance fields (stk and sProrcessId) final See how your compiler complains and fix those issues These instructons help you trading runtime errors like your NPE to compile time errors,
TAG :java
Date : October 21 2020, 11:12 PM , By : Enrique
Is there any difference between JME and J2ME?
should help you out There seems to be some confusion in the answers here. JME is short for jMonkey Engine framework which is "a high-performance, 3D scenegraph based graphics API, written in Java"Java ME (formerly J2ME) is "a Java platform designed f
TAG :java
Date : October 21 2020, 11:12 PM , By : Hevisko
How to send attribute from Database to dJ to make Report
like below fixes the issue You may be aware of this already, but it appears that somewhere, the code is trying to access a property called "varchar" on the Product object:Caused by: java.lang.NoSuchMethodException: Unknown property 'varchar' on class
TAG :java
Date : October 21 2020, 11:12 PM , By : David Bolivar
expand Tiny url in java
Any of those help You can use HttpClient to detect whether the URL is redirected to another location. After that it's a simple case of:
TAG :java
Date : October 21 2020, 11:12 PM , By : user3849855
Java Binary search
fixed the issue. Will look into that further Trying to perform a binary search on a sorted array of Book objects. , A couple suggestions for you:
TAG :java
Date : October 21 2020, 11:12 PM , By : Patrik
Java: fastest way to do random reads on huge disk file(s)
it should still fix some issue 800MB is not that much to load up and store in memory. If you can afford to have multicore machines ripping away at a data set for days on end, you can afford an extra GB or two of RAM, no?That said, read up on Java's j
TAG :java
Date : October 21 2020, 11:12 PM , By : Blaziken-100
Java: fast disk-based hash set
it helps some times If you can afford 128 GB of disk, you could store one bit per 40 bit value. You could then use a random access file to check a bit is set or to change it. You wouldn't have to insert any values or maintain an index.
TAG :java
Date : October 21 2020, 11:12 PM , By : user3849821
CSV row reader in Java
I think the issue was by ths following , Correctly parsing CSV files is more tricky than it might seem at the first sight, you'd need at least: Honour the original text encoding Make sure you can import escaped delimiters, i.e.: 23,10/02/2010,"hello,
TAG :java
Date : October 21 2020, 11:12 PM , By : user3849820
sample code for 3d games!
This might help you These will get you started:3D game engine - http://www.jmonkeyengine.com/
TAG :java
Date : October 21 2020, 11:12 PM , By : Oskarino
Java to/from C++ socket communication, DataInputStream and eof, binary, encryption
seems to work fine If I send binary data, what's to prevent a random byte sequence happening to represent an eof and falsely indicating to read() that the stream is ending?
TAG :java
Date : October 21 2020, 11:12 PM , By : tepetrol
Excessive number of touch events slows down Android app
fixed the issue. Will look into that further My guess is that it's not the touch events, but the handling of them. Make sure you are just handling the type of events you need (i.e. down or move) and ignoring the others. Also you might want to store a
TAG :java
Date : October 21 2020, 11:12 PM , By : user3849750
Cannot convert from type object to long
will be helpful for those in need I have a hashtable named table. The type value is long. I am getting values using .values(). Now I want to access these values. , Try this:
TAG :java
Date : October 21 2020, 11:12 AM , By : user3850058
Java consumes too much memory
should help you out Have you run a profiler like YourKit against this ? I suspect it'll show some memory leak due to references being held when they should be released. Note that System.gc() is a hint to the JVM, and doesn't force a GC cycle.Alternat
TAG :java
Date : October 21 2020, 11:12 AM , By : user3850051
Problem with the length of path in GCC
hop of those help? I had a problem with the limitation of paths Here for example I run this command... : , Change "Resource\gcc.exe" to "Resource\\gcc.exe".
TAG :java
Date : October 21 2020, 11:12 AM , By : André Loja
Java-lib for XML tree visualization
seems to work fine The Apache Pivot Project contains a XML Viewer. If you rely on a specific library you should mention that in your question.
TAG :java
Date : October 21 2020, 11:12 AM , By : user3850033
Which Data Structure? LinkedList or Any Other in Java?
like below fixes the issue A LinkedHashMap may suit your purpose You'd use an iterator to pull stuff from the front and lookup the entry by key when you needed to access the middle of the list
TAG :java
Date : October 21 2020, 11:12 AM , By : user3850018
Compilation error when instantiating a new ArrayList
I wish did fix the issue. I have the following code: , Replace those first couple lines of your main function with this:
TAG :java
Date : October 21 2020, 11:12 AM , By : klapper
How do I make this mouselistener only care about one object?
seems to work fine It would be helpful if you would point out that the method addMouseListeners() is in the superclass, GraphicsProgram. What it does is adds the listener to the canvas, not just to the individual shape. From there, you'll need to som
TAG :java
Date : October 21 2020, 11:12 AM , By : user3850001
Why can't I assign a 'long' a value of 4 billion?
hope this fix your issue I'm trying to declare a long value in Java, which unfortunately does not work. , Add L to the end of the number:
TAG :java
Date : October 21 2020, 11:12 AM , By : STARWOLF760
Trying to measure elapsed time in Java
around this issue I was unable to get the Java clock to measure the time elapsed in milliseconds from the beginning to the end of a simple program. , Use
TAG :java
Date : October 21 2020, 11:12 AM , By : user3849958
JTabbedPane swing update error
like below fixes the issue The update() method of JComponent "doesn't clear the background," so you may need to do that explicitly. Typical examples of JTabbedPane don't usually require using update(). Perhaps an sscce showing your usage might help.A
TAG :java
Date : October 21 2020, 11:12 AM , By : user3849957
C/C++ versus Java/C# in high-performance applications
should help you out A comparison of VC++/.NET 3.5/Mono 2.2 in a pure matrix multiplication scenario: Source
TAG :java
Date : October 21 2020, 11:12 AM , By : user3849955
Java JMenu setAccelerator() problem
Does that help Control-A and Control-P are both keystrokes that may already be intercepted, depending on your platform and depending on what has keyboard focus. Control-A may already be intercepted and interpreted as "select all", and Control-P may a
TAG :java
Date : October 21 2020, 11:12 AM , By : user3849944
Is this a perfect problem for the factory pattern?
This might help you Factory and Dependency Injection aren't mutually exclusive. Spring has the so-called factory-method which produces beans. You can pass arguments to the factory-method, and it can be either static or non-static.
TAG :java
Date : October 21 2020, 11:12 AM , By : pavan joshi

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