I don’t know what I did, or what went wrong, but a change I made at some point in the last while has made my JPanel completely invisible. The JFrame it’s nested in still changes in size to house it, and I can still toggle the content in the combobox. In my desperation, I tried replacing the conten…
Tag: java
How to get single field in mongodb query?
I have data like this: i want to show one field like this base on book -> chapter_no -> sub_no in mongodb query. Answer $match $unwind $unwind $match $replaceRoot mongoplayground
Unclosed character class while replacing string with regex
I want to remove a string at the beginning of another. Example: Begin Removed Final “n123 : other” Yes other “123 : other” No Error “n4 : smth” Yes smth “123 : a” No Error Thanks to Regexr, I made this regex: I tried to use it in Java. With string.matches() I do…
What is difference between RequestContextFilter and OncePerRequestFilter in spring?
Spring documentation for Class RequestContextFilter mentions that this filter exposes the request to the current thread, through both LocaleContextHolder and RequestContextHolder. Can someone please explain how this is different from OncePerRequestFilter class, and how can I implement such a filter? Answer Yo…
spring rest @RequestBody does not validate with @Valid
I’m learning java and spring boot and I am trying to validate a controller parameter which was bound from json. I’ve got simple Entity: Which I want to persist through the following controller: My understanding is that the resource argument should be valid when entering the method. But posting an …
Selenium Java Chrome remove flag
I want to hide that I use a Webdriver. I know the needed Code for Python: but I want it for Java. I tried this but I get errors: I hope you can help me out. Best Regards Christian Answer In Java it will be
Failed to read key key1 from store even tho key is 100% correct
I am trying to create a release build for my app, but no matter what I do, it does not work. I get this error everytime: Task :app:packageRelease FAILED I created so many keys and passwords and this time (every time created it new), but it always says “keystore password was incorrect” even tho it …
Is there a better way to Optimize code that takes one value out of a Request body, the data comes in, in json format
I have an request object, that contains a huge amount of data. But there is a filter in my code, where I need to take out just one element. At the moment I am Deserializing the whole object, which seems overkill to just get one element This is part of a zuul filter It seems over kill to deserialize an
How to get in Jena the exact range of an ObjectProperty with restrictions?
I have an owl/rdf schema with object properties with range restrictions, and I’m unable to get with the Jena API the effective range class. I would like to get the classes which are defined in the ontology as the range of a property. For example, with the following schema: And I’m doing: I expecte…
Make a Java class visible from any ClassLoader
I’m using a Java Agent (Agent.class) to transform a method in a program (Program.class) in a way that includes a call to the Agent class. I’ve inspected the class loaders and their parents of both Agent and Program classes, and their hierarchy looks like this: Agent.class: AppClassLoader <- Pla…