I'm trying to validate an XML file against a number of different schemas (apologies for the contrived example): a.xsd b.xsd c.xsd c.xsd in particular imports b.xsd and b.xsd imports a.xsd, using: <xs:include schemaLocation="b.xsd"/> I'm trying to do this via Xerces in the following manner: XMLSchemaFactory xmlSchemaFactory = new...
The problem: Maintain a bidirectional many-to-one relationship among java objects. Something like the Google/Commons Collections bidi maps, but I want to allow duplicate values on the forward side, and have sets of the forward keys as the reverse side values. Used something like this: // maintaining disjoint areas on a gameboard. Locat...
I keep telling myself that this should be simple, and yet I'm completely lost. Let me start by saying that I'm new to NetBeans IDE, and that I am using it out of necessity. I don't really know much about it yet. I have successfully designed my main window for my application. The right side of the application is essentially a large windo...
In Java classes is it considered good or bad practice to access member fields with their getters and setters? e.g which is better: public Order { private Agreement agreement; public Agreement getAgreement() { return agreement; } public void process() { //should I use: getAgreement().doSomething(); ...
Well, I think I have a very basic doubt here: I'm developing an app on GAE (Java) and performing a query to the datastore that returns a lot of entities, so I need to cache it. I was using memcache and it was working great, but if I keep the list of entities in a static variable, the whole request goes as twice as fast than using memca...
Is there something akin to the .NET xsd.exe for java - generating classes from a schema that you can easily de-serialize ? - or , What's the common practice for parsing and pull out/validate the content xml documents in Java ? Traversing a DOM tree and littering code with XPath queries to get the data you need seems quiet messy. ...
I'm using log4j in an app I'm developing to eventually run inside Tomcat/JBoss, but right now I'm running it from inside Eclipse. I've configured it to write to a ConsoleAppender using a log4j.xml file and passed it as a system property, and all of my logging output works. The problem is that log4j spits out a bunch of bootstrap/startup...
I'm using Eclipse to learn to develop Android applications in Java. I haven't used Eclipse before. The project I'm trying to use (supplied by OReilly as part of 'Android Application Development') is MJAndroid. When attempting to run the project, the Run fails, and the Problems tab mentions com.java.Object can't be found, and Eclipse ask...
I am trying to use VisualVM to profile a Java (Sun JDK 1.6) standalone application. I have a scripted performance test environment, where I can run my application and get it to report some metrics I care about. Is there some way to get JVM to collect some CPU profiling snapshot which I can later analyze with VisualVM? I am looking for...
Is there a gzip compression library that will work on J2ME? ...
I have been using Yourkit 8.0 to profile a mathematically-intensive application running under Mac OS X (10.5.7, Apple JDK 1.6.0_06-b06-57), and have noticed some strange behavior in the CPU profiling results. For instance - I did a profiling run using sampling, which reported that 40% of the application's 10-minute runtime was spent in ...
I'm creating a Java application where the user can search through a list of objects, which are then displayed in a JEditorPane window using a dynamically generated table whose size varies by the amount of results returned. I then want to allow the user to select and edit the objects. (The Java objects, not the HTML code) Is this feasibl...
I'm looking for a good easy to use Java based Quadratic Programming (QP) solver. Googling around I came across ojAlgo (http://ojalgo.org). However, I was wondering if there are any other/better alternatives. ...
I'm trying to create an application where there is a JSplitPane which contains the document tree on the left side and the current editor pane on the right. The editor pane has a toolbar as part of the edit pane. My problem is that when the JFrame containing the JSplitPane is resized as soon as the right component of the split pane reache...
Hi guys, I wanted to see some of your ideas/opinions/suggestions on the following problem. The idea is to have a simple webapp (java webapp) collecting user's input that essentially is turned into an XML file? The final XML file has to be valid and has to conform to a DTD. What would be a good way to dynamically collect an input prese...
I really need an easy to use build tool which supports multiple languages with strong Java support. I have tried Scons but found the Java support lacking. Is there anything else out there? I'm not excited about learning yet another build tool. Also, I really don't want a build tool which is difficult to use without an IDE since I use ema...
I need a suggestion for an efficient data structure for the following problem. I have two lists of students (male and female) with their respective classes (sorted by date) they have already taken. The list is already alphabetized with their last name, first name. A user will give a student name, ie. student X, and what the program nee...
I want to read UTF-8 strings from a server that I have control of, using java MIDP. My server is sending UTF-8 data. The following code gets close: c = (StreamConnection) Connector.open( myServer, Connector.READ_WRITE); InputStream is = c.openInputStream(); StringBuffer sb = new StringBuffer(); ...
I'm looking to port a small Java security library to PHP. The Java implementation makes use of a keystore for signing some stuff and I'm wondering how to go about recreating this functionality in PHP. Of course the original Java implementation must still work with the same key pair/keystore. I have very little experience with PHP and ...
On the Mac OS, from what I understand you're suppose to store information in "/Library/Application Support/Your App Name" if the files are to be read by everyone. However when it comes to writing, this is an admin only folder. Therefore, if you want to write data, you need to store it to "~/Library/Application Support/Your App Name". No...