In a Spring application, my point of view is that each domain model which in fact is a POJO, should encapsulate all the validation logic in itself. Now whenever there is an update or insertion, they should throw proper exceptions that are modeled after the business process like CustomerNotFound AlreadySold, CannotAllowReturnOfExpiredItem...
I want Eclipse to automatically generate Javadoc comments for my getter and setter methods based on the previously defined comments for the fields. How can I achieve this? Background: A policy in our company is to comment every method and field (even if they have self-explanatory names). So I have to do redundant work by describing the ...
I'd like to find out about the size of an array being allocated by looking at the bytecode, if that information is known at compile time, of course. Background: I want to write a FindBugs detector (which looks at the compiled bytecode) and report certain occurences of array allocations. In order to filter out false positives I am not in...
Are there any production-ready libraries for streaming XPath expressions evaluation against provided xml-document? My investigations show that most of existing solutions load entire DOM-tree into memory before evaluating xpath expression. ...
I am trying to create ArrayList<int> = new ArrayList<int>(); in Java but that does not work. Can someone explain why int as type parameter does not work? Using Integer class for int primitive works, but can someone explain why int is not accepted? Java version 1.6 ...
Maybe I am just blind, but I do not see how to use Guice (just starting with it) to replace the new call in this method: public boolean myMethod(String anInputValue) { Processor proc = new ProcessorImpl(anInputValue); return proc.isEnabled(); } For testing there might be a different implementation of the Processor, so I'd like...
My Java applet fails to show HTML-encoded (’) on JTextPanel panel randomly. Is this a JRE-specific bug? It works OK with my test pc but the customer has a problem that encoding is shown on GUI. ...
Hi, Where can i find code that will give me an idea for implementing randomization techniques in Graph Mining Please provide me the links or material Thanks in advance. Regards, sri ...
Hello, Is there a configurable way in Struts 1.x so my action classses are only executed on HTTP 'POST' only. I understand I can use request.getMethod() within my action class and then do certain 'stuff' based on that. Regards, Jonathan ...
I'm working on a website running in Tomcat that stores a lot of member data, and I'm not sure how to best package it. I want to be able to deploy a war easily without needing to remove anything from it first. My first thought was to break out the member data into its own directory outside of the war, but my problem is that some of that...
I tried the java.io.Console API using eclipse. My sample code follows. package app; import java.io.Console; public class MainClass { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub Console console = System.console(); console.printf("Hello, world!!"); ...
I'm interested in learning about the available choices of high-quality, stand-alone source code formatters for Java. The formatter must be stand-alone, that is, it must support a "batch" mode that is decoupled from any particular development environment. Ideally it should be independent of any particular operating system as well. So, a ...
Little background.. I'm in the process of making an OpenGL game using Java and LWJGL. I've written a TextRenderer-class that renders text using cached pages of glyphs. The glyphs itself are rendered in Java2D to BufferedImages and packed into texture pages along with the glyph measurements. TextRenderer draws the characters as textured ...
How do you catch incoming @Post variables when it is a multipart/form-data request? For a regular Post request I would do: @Post public void postExample(Representation entity) throws Exception{ Form form = new Form(entity); System.out.println(form.getFirstValue("something")); } But because it is a multipart/form-data request th...
I'm not sure what the technical term for this is, but consider an interface: public interface SomeInterface<T> { public T doSomething(); } And then a second interface: public interface SomeRelatedInterface<T, D extends SomeInterface<T>> { public T doSomethingRelated(D relative); } Is it possible to craft the second interf...
I've figured out how to get a JTable to be sorted properly, but I can't figure out how to get it to automatically update the sort order when a table cell is changed. Right now, I have this (admittedly long) code, mostly based on that in the Java Tutorial's How to Use Tables. I've highlighted the changes I've made with // ADDED. In this ...
Hi i was wondering if there is a Java library that acts as a wrapper for the Google maps API. What i am interested in is displaying a satellite map of a specific region (lon lat) on my desktop application. It doesn't have to be google maps specifically. Any map service would do the trick. What i need though is a library to work with a d...
I'm working with a maven (jar) Project in Netbeans(Windows), which creates Checkstyle Reports with the maven checkstyle Plugin. No Matter what i do, i always get the message: File does not end with a newline. for Java Class Files. What can i do/configure in either Netbeans (Formatter) or for the checkstyle plugin to get rid of the Mess...
I save 100.000 Vectors of in a database. Each vector has a dimension 60. (int vector[60]) Then I take one and want present vectors to the user in order of decreasing similarity to the chosen one. I use Tanimoto Classifier to compare 2 vectors: Is there any methods to avoid doing through all entries in the database? One more thing! ...
Whats the easiest way to determine which Java class is compiled with the "wrong" version number? I've a project with a large number of dependencies and somewhere I've a class compiled using Java 1.6, where Java 1.5 is required. At runtime I get the uninformative exception: [WARN] StandardWrapperValve[shell]: Servlet.service() for ser...