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JAVA QUESTIONS

Template engine recommendations
Template engine recommendations
This might help you How about Velocity? full Java does not require servlets it has file, jar, classpath URL resource loaders (and maybe more) templates can include other templates (if this is what you mean) has good tutorials, so far I could get wha
TAG : java
Date : November 27 2020, 07:01 PM , By : Nikolay Bogdanov
Help with hash tables and quadratic probing in Java
Help with hash tables and quadratic probing in Java
wish help you to fix your issue First of all we are talking about an open addressing (or closed hashing) approach. You need to handle collisions calculating a new hashcode if the previous one is already used by another one, this because every bucket
TAG : java
Date : November 27 2020, 07:01 PM , By : user3863861
javax.persistence.NoResultException: getSingleResult() did not retrieve any entities
javax.persistence.NoResultException: getSingleResult() did not retrieve any entities
I think the issue was by ths following , You seem to rethrow the exception in your catch block with the statement throwException(username, e);. If you expect to get the user or null without any exception this should look like the following:
TAG : java
Date : November 27 2020, 07:01 PM , By : user3863842
What does look and feel (java swing) mean?
What does look and feel (java swing) mean?
Does that help It means how the Graphical User Interface (GUI) looks like and behaves. Every OS has its own typical LookFeel. At the beginning, Java had its own, but of course most people want to have their applications look like the others of their
TAG : java
Date : November 27 2020, 07:01 PM , By : Muthu Krishnan V
Android Lightweight HTML Template Engine
Android Lightweight HTML Template Engine
I hope this helps you . Chunk is a lightweight template engine that is ideal for Android apps.The basic {$tag} syntax is straightforward and easy to learn. Chunk also includes advanced features like loops and conditionals when you need more, and come
TAG : java
Date : November 27 2020, 07:01 PM , By : user3863823
Setting unique key constraint for Db4oEmbedded EmbeddedConfiguration
Setting unique key constraint for Db4oEmbedded EmbeddedConfiguration
around this issue I ran the code snippet you posted with a simple NotyUser class (just a String username field) and no exception was thrown neither in db4o-7.12 in android 1.5, nor db4o trunk with android 2.1.What exception was thrown there? and can
TAG : java
Date : November 27 2020, 07:01 PM , By : user3863815
How can I handle user defined exceptions and after handling them resume the flow of program
How can I handle user defined exceptions and after handling them resume the flow of program
I wish did fix the issue. You need to use try/catch. You can learn a lot about exception handling from Sun's (Oracle's) exception handling tutorials. In that tutorial look at the sections about Catching and Handling that specific address your questio
TAG : java
Date : November 27 2020, 07:01 PM , By : Jaypee
Latest org.json
Latest org.json
it helps some times Where can I download the latest org.json JAR? , As far as I can tell (in December 2013) ...
TAG : java
Date : November 27 2020, 07:01 PM , By : acacia
How to create web service client in a .jsp page?
How to create web service client in a .jsp page?
I hope this helps . I really do not recommend coding any kind of logic in a JSP, including calling a web service, this is not a good practice. JSP is a view technology and should be used for the presentation, not for business logic. Instead, you shou
TAG : java
Date : November 27 2020, 07:01 PM , By : Division by Zero
Java Runtime command line Process
Java Runtime command line Process
hope this fix your issue I think you need to set the PATH as an environment variable in your Eclipse Run configuration.
TAG : java
Date : November 27 2020, 07:01 PM , By : user3863717
Android: add badge to icons internal to my app
Android: add badge to icons internal to my app
Does that help If you really want to do it. Use a FrameLayout which contains an ImageView with your icon and a TextView with a ninepatch drawable as background in the right corner. Add margins to the ImageView if you want the badge to be a bit outsid
TAG : java
Date : November 27 2020, 07:01 PM , By : Angelo_ita
spymemcached - is it possible to disable the logging system?
spymemcached - is it possible to disable the logging system?
I hope this helps you . I stopped excessive Tomcat logging to catalina.out by doing this before creating the MemcachedClient object:
TAG : java
Date : November 27 2020, 07:01 PM , By : Nikul Sadhu
Java Logger with Servlets
Java Logger with Servlets
Hope this helps You don't need to initialize your logger multiple times. Actually, you don't even need to do it manually because you can create a properties-file with configuration information and put it to the certain directory in the way that this
TAG : java
Date : November 27 2020, 07:01 PM , By : Vishal
replace special characters in string in java
replace special characters in string in java
it helps some times You can get rid of all characters outside the printable ASCII range using StringreplaceAll() by replacing the pattern [^\\x20-\\x7e] with an empty string:
TAG : java
Date : November 27 2020, 07:01 PM , By : user3863601
why won't Eclipse use the compiler I specify for my project?
why won't Eclipse use the compiler I specify for my project?
I hope this helps . This isn't about the compiler - it's only about the library! Go to the project's properties, then under Java Build Path / Libraries, remove the JRE System library. Then use Add Library... to add the version of the JRE library you
TAG : java
Date : November 27 2020, 07:01 PM , By : user3860677
Google Web Toolkit, what can I do with it?
Google Web Toolkit, what can I do with it?
I think the issue was by ths following , Google Web Toolkit can be used in many ways: as a framework for building Rich Internet Applications (RIA) from scratch - the most common use, AFAICT. Examples include Google Wave, the Google AdWords advertiser
TAG : java
Date : November 27 2020, 07:01 PM , By : Nano Niland
doubt on private members and Methods
doubt on private members and Methods
I think the issue was by ths following , Private members (methods are members too) are how you implement Encapsulation which is arguably the most important concept in object oriented programming.The idea is to distinguish between concrete implementat
TAG : java
Date : November 26 2020, 07:01 PM , By : Raik Strohbach
How do I check if output stream of a socket is closed?
How do I check if output stream of a socket is closed?
will help you I have this code: , I should have looked better. From the javadoc of PrintWriter:
TAG : java
Date : November 26 2020, 07:01 PM , By : user3863566
Is there a clean cut way of adding NOP records to an AFP file using Java?
Is there a clean cut way of adding NOP records to an AFP file using Java?
will help you I would suggest raising this as an enhancement request with FOP. This is most likely the most realistic place to get this done.I am not aware of any Java AFP processing libraries except that in FOP.
TAG : java
Date : November 26 2020, 07:01 PM , By : Vonki3
Move multiple BufferedImage in Java2D?
Move multiple BufferedImage in Java2D?
help you fix your problem Use the BufferedImage to create an ImageIcon which you use to create a JLabel. Then you add the JLabel to the panel that uses a null layout. No custom painting code is required to do this.Now if you want to drag the label ar
TAG : java
Date : November 26 2020, 07:01 PM , By : user3863536
how to learn Drools or another rule engine fast
how to learn Drools or another rule engine fast
Any of those help What joekutner said + a recent 1hr Fosdem "introduction" video. Despite the comments, it's actually really good, but what you have to have is the slides, so that you can follow through in a sane fashion. Here is a link to the Youtub
TAG : java
Date : November 26 2020, 07:01 PM , By : Cyber Indigo
Date Sorting - Latest to Oldest
Date Sorting - Latest to Oldest
around this issue , To be sure you can use:
TAG : java
Date : November 26 2020, 07:01 PM , By : Lukas
unable to add objects to saved collection in GAE using JDO
unable to add objects to saved collection in GAE using JDO
I wish this helpful for you "no matching index found" Perhaps you need to add some index in GAE/J's datastore ? Nothing to do with JDO
TAG : java
Date : November 26 2020, 07:01 PM , By : user3863496
Spring, Hibernate, Blob lazy loading
Spring, Hibernate, Blob lazy loading
will help you I'm confused. Emmanuel Bernard wrote in ANN-418 that @Lob are lazy by default (i.e. you don't even need to use the @Basic(fetch = FetchType.LAZY) annotation). Some users report that lazy loading of a @Lob doesn't work with all drivers/d
TAG : java
Date : November 26 2020, 07:01 PM , By : QiFen
Including Applet in JSP page
Including Applet in JSP page
Hope this helps As shown in this reference, you have to include .class in the code attribute:
TAG : java
Date : November 26 2020, 07:01 PM , By : user3863438
Original object is also changed when values of cloned object are changed
Original object is also changed when values of cloned object are changed
seems to work fine You have obtained what is known as a "shallow copy" of the object. Essentially all of the primitives are copied over, including the object references (the array in this case).What you want is a "deep copy". There are a couple of wa
TAG : java
Date : November 26 2020, 07:01 PM , By : user3863422
Drag and drop + custom drawing in Android
Drag and drop + custom drawing in Android
wish of those help I use drag and drop in my music player application! I give to user the ability to move an song from an playlist to an other playlist. It is really nice and simple for the user. I start the drag event for my view when user make an l
TAG : java
Date : November 26 2020, 07:01 PM , By : user3863345
Creating a time series with jfreechart
Creating a time series with jfreechart
wish help you to fix your issue You might have a look at org.jfree.chart.demo.TimeSeriesChartDemo1, and the associated API documentation. A typical command to run the demo might look like this:
TAG : java
Date : November 26 2020, 07:01 PM , By : Elahe Khani
Hibernate Criteria: Perform JOIN in Subquery/DetachedCriteria
Hibernate Criteria: Perform JOIN in Subquery/DetachedCriteria
will help you I'm running into an issue with adding JOIN's to a subquery using DetachedCriteria. The code looks roughly like this: , Don't you have a typo in your code at the following line :
TAG : java
Date : November 26 2020, 07:01 PM , By : SubhamAgarwal
How to check if my string is equal to null?
How to check if my string is equal to null?
Does that help I want to perform some action ONLY IF my string has a meaningful value. So, I tried this.
TAG : java
Date : November 26 2020, 07:01 PM , By : user3863279
Connect two client sockets
Connect two client sockets
seems to work fine First of all, don't call an accepted client (server-side) its socket a Client Socket. That is very confusing.
TAG : java
Date : November 26 2020, 07:01 PM , By : jsw2015
How to reference a .dll from a .jar file
How to reference a .dll from a .jar file
I wish did fix the issue. java.library.path solution isn't always good: there are many situations where you can't change JVM parameters. Better solutions:1) already mentioned: put DLL in the same directory as JAR, unfortunately it makes usage of such
TAG : java
Date : November 26 2020, 07:01 PM , By : user3860335
Invoke web-services in JSF
Invoke web-services in JSF
To fix this issue The way you access web services from your code (managed beans perhaps?) does not depend on JSF. CXF and Metro are both implementations of JAX-WS, using which you can implement web-service client code.
TAG : java
Date : November 26 2020, 07:01 PM , By : Vash Zelpher
servlet connection to DB
servlet connection to DB
it fixes the issue Initially, after reading books on the subject, I firmly believed that the algorithm for working with a database from a servlet is as follows: create a connection -> connect to the database -> form a request -> send the request to t
TAG : java
Date : November 26 2020, 07:01 PM , By : MiBetaSigma
Can I un-assign (clear) all fields of an instance?
Can I un-assign (clear) all fields of an instance?
hop of those help? I don't get it. How can you programmatically decide how to clear various fields?For normal attributes it can be easy (var = null) but what about composite things or collection? Should it be collection = null, or collection.removeAl
TAG : java
Date : November 25 2020, 07:01 PM , By : user3863249
Java parsing XML document gives "Content not allowed in prolog." error
Java parsing XML document gives "Content not allowed in prolog." error
wish help you to fix your issue Please check the xml file whether it has any junk character like this �.If exists,please use the following syntax to remove that.
TAG : java
Date : November 25 2020, 07:01 PM , By : Antonio Ulian Do Lag
Deploy Play! application as executable jar
Deploy Play! application as executable jar
Any of those help If you have a WAR, you can use the embedded mode of the Winstone servlet container to get a stand-alone executable jar. This is what Hudson does.
TAG : java
Date : November 25 2020, 07:01 PM , By : Devin Abolins
Castor: how to map a simple list of strings?
Castor: how to map a simple list of strings?
like below fixes the issue Is there any reason you are using Marshalling to achieve this? It will have a set way of defining the XML output so that it knows how to recreate the objects when unmarshalling. So if you really want that XML output using m
TAG : java
Date : November 25 2020, 07:01 PM , By : user3863140
Hibernate Transient Extends problem
Hibernate Transient Extends problem
hope this fix your issue When you mark a Parent class as @MappedSuperclass, you are saying
TAG : java
Date : November 25 2020, 07:01 PM , By : user3863122
Posting a JSON array to webservice in Android
Posting a JSON array to webservice in Android
wish help you to fix your issue Appending key/value data to URLs after a '?' is GET not POST.This is how to POST data in Java:
TAG : java
Date : November 25 2020, 07:01 PM , By : Johmz Austria
How to search for duplicate values in a huge text file having around Half Million records
How to search for duplicate values in a huge text file having around Half Million records
will be helpful for those in need Keep a HashMap of {account_number, occurrences} in memory (initially empty), and traverse the file only once, setting or incrementing (in the HashMap) the number of occurrences of each account number you encounter du
TAG : java
Date : November 25 2020, 07:01 PM , By : user3863091
Easy way to get a test file into JUnit
Easy way to get a test file into JUnit
Does that help Can somebody suggest an easy way to get a reference to a file as a String/InputStream/File/etc type object in a junit test class? Obviously I could paste the file (xml in this case) in as a giant String or read it in as a file but is t
TAG : java
Date : November 25 2020, 07:01 PM , By : Syeda Sinchu
cast across classloader?
cast across classloader?
I hope this helps you . Not possible. Class identity consists of the fully qualified name and the class loader.Casting an object to a class with the same name loaded by different classloaders is no different than trying to cast a String to Integer, b
TAG : java
Date : November 25 2020, 07:01 PM , By : NazKidd982
Image manipulation
Image manipulation
Does that help First of all, uDIG, OpenJUMP (not sure about this) cannot process images in a way that ERDAS can. These softwares are great, but they do not have extensive raster funcionality.You need to take a look at GDAL, which covers a bunch of la
TAG : java
Date : November 25 2020, 07:01 PM , By : Sebastian2912
Java - JPA - Generators - @SequenceGenerator
Java - JPA - Generators - @SequenceGenerator
this will help sequenceName is the name of the sequence in the DB. This is how you specify a sequence that already exists in the DB. If you go this route, you have to specify the allocationSize which needs to be the same value that the DB sequence us
TAG : java
Date : November 24 2020, 07:00 PM , By : henry ken
What's a good Java-based Master-Slave communication mechanism?
What's a good Java-based Master-Slave communication mechanism?
hop of those help? Well, I suggest JMS if you are looking for something which is based on Java. It has all the features that you are looking for plus a strong application server such as JBoss. However, another option which is not completely java base
TAG : java
Date : November 24 2020, 07:00 PM , By : crpark98
Design Help/Suggestion required
Design Help/Suggestion required
I wish this help you If you are generating 100,000 challans a year, and you have an 8 digit space, then the math works out as99,999,999 max challan number / 100,000 challans per year = 1,000 years of challans
TAG : java
Date : November 24 2020, 07:00 PM , By : user3862911
NullPointerException in com.sun.tools.jxc.SchemaGenTask
NullPointerException in com.sun.tools.jxc.SchemaGenTask
With these it helps I had this issue because my srcdir was set to the package folder which contained the java files.Changing this to the top level source folder was better, but then schemagen wanted to make a schema for all .java files on my source p
TAG : java
Date : November 24 2020, 07:00 PM , By : user3862897
time required to finish the multithreaded program?
time required to finish the multithreaded program?
like below fixes the issue This depends on the amount of logical processor cores you have and the already running processes and the priority of the threads. The theoretical minimum would be 5 minutes plus the little overhead in starting and controlli
TAG : java
Date : November 24 2020, 07:00 PM , By : Muhammad Izwan
Traditional IO vs memory-mapped
Traditional IO vs memory-mapped
this one helps. What I see with the one benchmark "Stream Read/Write" is: It does not really do stream I/O but seeks to a specific location in the file. This is non-buffered so all the I/Os must be completed from disk (the other streams are using buf
TAG : java
Date : November 24 2020, 07:00 PM , By : user3862863
Using StringBuilder to process csv files to save heap space
Using StringBuilder to process csv files to save heap space
will be helpful for those in need Will the optimized code increase performance of the app? - my question
TAG : java
Date : November 24 2020, 07:00 PM , By : Janson
Response Time is different for mulitiple execution of the application with the same request Performance problem
Response Time is different for mulitiple execution of the application with the same request Performance problem
wish help you to fix your issue My java application functionality is to provide reference data (basically loads lots of data from xml files into hashmap) and hence we request for one such data from the hashmap based on a id and we have such multiple
TAG : java
Date : November 24 2020, 07:00 PM , By : user3862786
Java - Weblogic - JMX : request available free memory on all servers
Java - Weblogic - JMX : request available free memory on all servers
To fix the issue you can do Weblogic 9 has the JVMRuntimeMBean documented here. You'll need to search for weblogic.management.runtime.JVMRuntimeMBean The listed attributes are
TAG : java
Date : November 24 2020, 07:00 PM , By : user3862777
Error: Can't find common super class of
Error: Can't find common super class of
To fix the issue you can do Try adding the option -dontskipnonpubliclibraryclasses to your command line.From the Proguard Manual:
TAG : java
Date : November 24 2020, 07:00 PM , By : Comador
JNI problem when calling a native library that loads another native library
JNI problem when calling a native library that loads another native library
I wish this helpful for you There are really only two ways that one DLL can load another one in Windows - either they do it explicitly using LoadLibrary() or it's implicitly by linking the first DLL against the import library of the second one. You s
TAG : java
Date : November 24 2020, 07:00 PM , By : user3862684
calling Stanford POS Tagger maxentTagger from java program
calling Stanford POS Tagger maxentTagger from java program
I think the issue was by ths following , Well, when you compile or invoke your program you need to add Stanford's JAR file to your classpath, e.g.:
TAG : java
Date : November 24 2020, 07:00 PM , By : user3862679
Notification framework for java
Notification framework for java
around this issue Rmarimon, check out Boomerang Notification Framework from Fuel9. With some basic SQL skills you can quickly develop dynamic notifications (email, twitter, fax etc). Good luck!/M
TAG : java
Date : November 24 2020, 07:00 PM , By : user3862676
hide keyboard in android?
hide keyboard in android?
will help you Change your manifest file:pput it there: (on your especific activity)
TAG : java
Date : November 24 2020, 07:00 PM , By : user3861417
Alternative of JPA
Alternative of JPA
it should still fix some issue IMO the proper way to deal with such issues would be to use a generated internal (typically Long) ID instead of a natural primary key - this eliminates the whole problem. Of course, this requires a modification of your
TAG : java
Date : November 24 2020, 07:00 PM , By : Hugh
How to get Java XP Look and Feel
How to get Java XP Look and Feel
To fix this issue You can't. The XP look and feel, along with several of the other platform-flavoured look-and-feels, depends on native support from the actual platform. It can only be used on XP.
TAG : java
Date : November 24 2020, 07:00 PM , By : user3860783

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