I have a MouseListener on a component and want to listen to mouseReleased events, without needing mousePressed events. How can I detect if the user presses on another button, the desktop, or other …
What’s the difference between Spring Data’s MongoTemplate and MongoRepository?
I need to write an application with which I can do complex queries using spring-data and mongodb. I have been starting by using the MongoRepository but struggled with complex queries to find examples or to actually understand the Syntax. I’m talking about queries like this: or the use of JSON based queries which I tried by trial and error because
Pass Hidden parameters using response.sendRedirect()
How would I pass hidden parameters? I want to call a page (test.jsp) but also pass 2 hidden parameters like a post. Answer TheNewIdiot’s answer successfully explains the problem and the reason why you can’t send attributes in request through a redirect. Possible solutions: Using forwarding. This will enable that request attributes could be passed to the view and you
Java catch block, caught exception is not final
I am checking out the new features of Java SE7 and I am currently at this point: http://docs.oracle.com/javase/7/docs/technotes/guides/language/catch-multiple.html regarding the catch multiple feature, when I came across this statement: Note: If a catch block handles more than one exception type, then the catch parameter is implicitly final. In this example, the catch parameter ex is final and therefore you cannot
Java object, changed fields listener, design-pattern
There is a class: Then we update some fields How can I know which fields of MyClass were tried to be changed (invoked, in the example above field1 and field2)? What is the best solution for that? Maybe some design-pattern? One option is to create HashSet of changed fields for this object as an additional property and update it inside
How to use OpenGL in JavaFX?
I want to write a very simple Java 3D editor(for experiment). I know the basic JavaFX usage, and I know enough OpenGL knowledge. But all my OpenGL experience is from working with C/C++. Could I make a ‘canvas’ in JavaFx application and map OpenGL viewport on it? Answer Internally, JavaFX can use OpenGL as a rendering pipeline, so some care
Where is the Java SDK folder in my computer? Ubuntu 12.04
I know it’s installed because when I type: I get: And when I type: I get: What worries me about the first item in the list is that the 2012a folder is my MATLAB folder and not a standard ‘usr/lib’ folder. I’m really confused on where the JDK and JRE got installed, because I need to set the $JAVA_HOME path
Call Java function using .Net(C#)
is it possible to invoke function which is written in Java using WCF or any class application written in C# .net Can it be possible by using webOrb.. i can’t find enough information about Java to .Net remoting.. Answer If you want to communicate between C# and Java you have a couple of options. The cleanest: Build a service. This
How do I remove duplicate objects from two separate ArrayLists?
Before beginning, I think that this question has a very simple answer that I’m just overlooking. I figured a few more eyes on the question at hand will be able to point out my problem fairly quickly. I have two ArrayLists that I want to compare and remove duplicates from each of them. The first ArrayList is an ArrayList of
How to sort file names in ascending order?
I have a set of files in a folder, and all of them starting with a similar name, except one. Here is an example: I am able to list all the files from the specified folder, but the list is not in an ascending order of the spectrum number. Example: I get the following result when the program is executed: