Spring Data JPA Update @Query not updating?
The EntityManager doesn’t flush change automatically by default. You should use the following option with your statement of query:
Java
Problems with setting the classpath in ant
I think the problem is with your classpath path declaration. The build directory should be a <pathelement> Also, I would only include 3-rd party jars in your classpath refid. So the whole block looks like. Also, as DroidIn.net has pointed out, you should create a package for you program.
Handle mouse event anywhere with JavaFX
You can add an event filter to the scene with addEventFilter(). This will be called before the event is consumed by any child controls. Here’s what the code for the event filter looks like.
ClassNotFoundException: org.slf4j.LoggerFactory
Try downloading jar from here You can find, it holds the class you need. EDIT Seems like the website has changed its structure. You need to choose which jar file you need for your project. For slf4j-api jar file for latest version as of now, please visit this link For slf4j-simple jar file for latest version as of now, please visit this … Read more
@Autowired – No qualifying bean of type found for dependency
You should autowire interface AbstractManager instead of class MailManager. If you have different implemetations of AbstractManager you can write @Component(“mailService”) and then @Autowired @Qualifier(“mailService”) combination to autowire specific class. This is due to the fact that Spring creates and uses proxy objects based on the interfaces.
Login Application with 1 stage and multiple scene in JavaFX
Each FXML file is not necessarily a new Scene. A fxml is just a view file with its root element as any of the Layouts provided by Javafx. It may have multiple Layouts(as a part of the root layout) and controls depending on your requirement. To know more about fxml, you can view Java vs JavaFX Script vs FXML. … Read more
LocalDate to java.util.Date and vice versa simplest conversion?
tl;dr Is there a simple way to convert a LocalDate (introduced with Java 8) to java.util.Date object? By ‘simple’, I mean simpler than this Nope. You did it properly, and as concisely as possible. Read below for issues, and then think about it. How could it be simpler? If you ask me what time does … Read more
maven error: package org.junit does not exist
Ok, you’ve declared junit dependency for test classes only (those that are in src/test/java but you’re trying to use it in main classes (those that are in src/main/java). Either do not use it in main classes, or remove <scope>test</scope>.
HashMap get/put complexity
It depends on many things. It’s usually O(1), with a decent hash which itself is constant time… but you could have a hash which takes a long time to compute, and if there are multiple items in the hash map which return the same hash code, get will have to iterate over them calling equals on each of them to find a match. … Read more
Is there a Mutex in Java?
See this page: http://www.oracle.com/technetwork/articles/javase/index-140767.html It has a slightly different pattern which is (I think) what you are looking for: In this usage, you’re only calling release() after a successful acquire()