java

What are the best remoting technologies for mobile applications ?

I have a java back-end that needs to expose services to clients running in the following environments : J2ME Windows Mobile iPhone I am looking for the best tool for each platform. I do not search a technology that works everywhere. I need something "light" adapted to low speed internet access. Right now I am using SOAP. It is verbo...

Before and After Suite execution hook in jUnit 4.x

I'm trying to preform setup and teardown for a set of integration tests, using jUnit 4.4 to execute the tests. The teardown needs to be run reliably. I'm having other problems with TestNG, so I'm looking to port back to jUnit. What hooks are available for execution before any tests are run and after all tests have completed? Note: we're...

Logging activities in multithreaded applications

I have a layered application in Java which has a multi thread data access layer which is invoked from different points. A single call to this layer is likely to spawn several threads to parallelize requests to the DB. What I'm looking for is a logging tool that would allow me to define "activities" that are composed by various threads....

Which heap size do you prefer ?

I know there is no "right" heap size, but which heap size do you use in your applications (application type, jdk, os)? ...

How to insert XmlCursor content to DOM Document

Some API returns me XmlCursor pointing on root of XML Document. I need to insert all of this into another org.w3c.DOM represented document. At start: XmlCursor poiting on <a> <b> some text </b> </a> DOM Document: <foo> </foo> At the end I want to have original DOM document changed like this: <foo>   <someOtherInserte...

What's the easiest way to use C source code in a Java application?

I found this open-source library that I want to use in my Java application. The library is written in C and was developed under Unix/Linux, and my application will run on Windows. It's a library of mostly mathematical functions, so as far as I can tell it doesn't use anything that's platform-dependent, it's just very basic C code. Also, ...

How to get date picture created in java

I would like to extract the date a jpg file was created. Java has the lastModified method for the File object, but appears to provide no support for extracting the created date from the file. I believe the information is stored within the file as the date I see when I hover the mouse pointer over the file in Win XP is different than wh...

log4j log file names?

We have several jobs that run concurrently that have to use the same config info for log4j. They are all dumping the logs into one file using the same appender. Is there a way to have each job dynamically name its log file so they stay seperate? Thanks Tom ...

Any good Derby DB Editor?

I would like to modify some Derby DB's structure, do you know any good (multiplataform) editor for doing this? thanks! ...

Is .NET a write once, run anywhere (WORA) platform like Java claims to be?

I remember Sun's slogan so vividly... "Write Once, Run Anywhere". The idea being that since programs are compiled into standard byte codes, any device with a Java Virtual Machine could run it. Over the years, Java seems to have made it onto many platforms/devices. Is this the intention or was it ever the intention of .NET. If so, what ...

Web Scripting for Java

What is a good way to render data produced by a Java process in the browser? I've made extensive use of JSP and the various associated frameworks (JSTL, Struts, Tapestry, etc), as well as more comprehensive frameworks not related to JSP (GWT, OpenLaszlo). None of the solutions have ever been entirely satisfactory - in most cases the fr...

What can you use to get an application to be able to receive SMS message?

Do you need to use some kind of provider? Can you setup your own SMS server? Does any open source solutions exist? I am an SMS newbie so any insight on how this is accomplished would be great. I am partial to Java but any language is fine. ...

calling thread.start() within its own constructor

is it legal for a thread to call this.start() inside its own constructor? and if so what potential issues can this cause? I understand that the object wont have fully initialized until the constructor has run to completion but aside from this are there any other issues? ...

Why learn Perl, Python, Ruby if the company is using C++, C# or Java as the application language?

I wonder why would a C++, C#, Java developer want to learn a dynamic language? Assuming the company won't switch its main development language from C++/C#/Java to a dynamic one what use is there for a dynamic language? What helper tasks can be done by the dynamic languages faster or better after only a few days of learning than with th...

Problem with Java 1.6 and Desktop.open()

I've been using Destop.open() to launch a .pdf viewer on Windows machines, both Vista and XP, and most of them work just fine. However, on one XP machine the call does not work, simply returning without throwing any exceptions, and the viewer does not launch. On that machine the file association is properly set up as far as I can tell:...

How do you create a MANIFEST.MF that's available when you're testing and running from a jar in production?

I've spent far too much time trying to figure this out. This should be the simplest thing and everyone who distributes Java applications in jars must have to deal with it. I just want to know the proper way to add versioning to my Java app so that I can access the version information when I'm testing, e.g. debugging in Eclipse and runn...

Hibernate Query By Example and Projections

Hi all, To make it short: hibernate doesn't support projections and query by example? I found this post: The code is this: User usr = new User(); usr.setCity = 'TEST'; getCurrentSession().createCriteria(User.class) .setProjection( Projections.distinct( Projections.projectionList() .add( Projections.property("name"), "name") .add( Proj...

How do you authenticate against an Active Directory server using Spring Security?

I'm writing a Spring web application that requires users to login. My company has an Active Directory server that I'd like to make use of for this purpose. However, I'm having trouble using Spring Security to connect to the server. I'm using Spring 2.5.5 and Spring Security 2.0.3, along with Java 1.6. If I change the LDAP URL to the ...

Get IFile from IWorkspaceRoot and location String

This is an Eclipse question, and you can assume the Java package for all these Eclipse classes is org.eclipse.core.resources. I want to get an IFile corresponding to a location String I have: "platform:/resource/Tracbility_All_Supported_lib/processes/gastuff/globalht/GlobalHTInterface.wsdl" I have the enclosing IWorkspace and IWor...

How to accept REF cursor in JAVA without importing Oracle Package

I am writting JAVA programme using JDBC for database conntectivity , I am calling one stored procedure in that which is returning ORACLE REF CURSOR , IS there any way I can handle that without importing ORACLE PACKAGES ? ...