I’m just implemented a JUnit test case using JUnit 4.11 following the example: https://github.com/junit-team/junit/blob/master/doc/ReleaseNotes4.11.md#example-1 I create a maven project using And this test case: But when I test it using mvn test , maven said: How to make it work? Answer The problem is t…
How to Convert FXML to JAVA [closed]
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. Want to improve this question? Update the question so it’s on-topic for Stack Overflow. Closed 4 months ago. Improve this question I created a .fxml file using javafx scene builder in NetBeans. How can …
org.hibernate.hql.internal.ast.QuerySyntaxException: table is not mapped [from table]
I’m trying to learn to use Hibernate using MySQL, I’ve never worked with it before and after a chain of errors I finally get stucked with this: I’ve tried with possible solutions of another questions, but nothing, it doesn’t work. This is what I’ve done so far: hibernate.cfg.xml …
NoSuchMethodError when using submitting form in Struts 2
I’m currently working through the tutorial found on the Apache Struts website. Currently, whenever I press submit on the form, or when I click the Bruce Philips hyperlink, I get a NoSuchMethodError. I’m not too sure what the issue is either and I believe I’ve included everything the tutorial…
What is a supertype method?
I have googled couple of times but still can’t understand the supertype method. Can anyone please explain what is this? Answer There is a notion of supertype and subtype in OOPS, In java this kind of relationship is implemented by inheritance i.e. using extends keyword: Any member (fields, methods) decl…
How @Target(ElementType.ANNOTATION_TYPE) works
Java annotations are marked with a @Target annotation to declare possible joinpoints which can be decorated by that annotation. Values TYPE, FIELD, METHOD, etc. of the ElementType enum are clear and simply understandable. Question WHY to use @Target(ANNOTATION_TYPE) value? What are the annotated annotations g…
What does .class mean in Java?
What does .class mean in Java? For example, if I created a class called Print. What does Print.class return? Answer When you write .class after a class name, it references the class literal – java.lang.Class object that represents information about a given class. For example, if your class is Print, the…
Hibernate faster EntityManagerFactory creation
In my desktop application new databases get opened quite often. I use Hibernate/JPA as an ORM. The problem is, creating the EntityManagerFactory is quite slow, taking about 5-6 Seconds on a fast machine. I know that the EntityManagerFactory is supposed to be heavyweight but this is just too slow for a desktop…
API service works every second request
I have problem with jax-rs REST service. Service does not operate properly. Every second request service throw me exception: HTTP Status 500 – could not execute query type Exception report message …
Java – how to convert letters in a string to a number?
I’m quite new to Java so I am wondering how do you convert a letter in a string to a number e.g. hello world would output as 8 5 12 12 15 23 15 18 12 4. so a=1, b=2, z=26 etc. Answer Since this is most likely a learning assignment, I’ll give you a hint: all UNICODE code points