How can I set current date (Today’s date) to my local date. My timezone is GMT+07:00. I can just set only setSelection() date but can’t set current date. (Sorry for my any grammatical mistake and thank you in advance) Calendar image Answer I could be wrong, but I think you don’t need to worr…
Tag: java
Why are log4j classes loaded by two class loaders?
I have a maven project for an application, which I run in a WildFly server. The project has log4j dependencies: I would like to get the LoggerContext like this: However, this results in ClassCastException: After some debugging, I have discovered that the problem is that the class LoggerContext is loaded via t…
Replace external jar dependency with local intellij project
So I have an intellij IDEA project (project A) which includes a bunch of external jar libraries. I am currently working on one of those external jar libraries (project B) and I want to replace it with the local project (project B) on my computer. So, in short: I have Project A which depends on jar B I want to
How to set up init method with file constants for Spring Application?
I’m pretty new in Java Spring usage, so here’s my question. I need to inject some information into DB before my application starts. I mean, I know how to use @Bean init-method, but i dont’t want to hardcode constants even in .properties file. Here’s my temporary solution (data is chang…
Slowness after migrating to Grails 5.1.1 – time spent on GrailsControllerUrlMappingInfo
Recently, we migrated our backend APIs from Grails 3 to Grails 5.1.1 Together with it we also upgraded java version to 11. Everything is running on Docker. Otherwise, nothing else has changed. After the migration, we are now facing performance issues. But it’s a weird one. First, we got some results fro…
Understanding Relationship Cascading with Merge
Deep diving into Spring JPA and I have troubles to understand whats going on here. This is the code: Entity SpringBootApp By starting the app, the following gets generated in the DB: I get to the point where all the persons are generated, but I would expect one additional entry in the PERSONP_KNOWS table, e.g…
netty-incubator-codec-quic: How to get remoteAddress?
I need to know the remote address at the server side. I tried bellow ways and failed: QuicStreamChannel.remoteAddress() returns QuicStreamAddress, which cannot be casted to InetSocketAddress. QuicStreamAddress or QuicConnectionAddress does not contain remote IP address or port at all. class io.netty.buffer.Po…
How to properly convert HashMap<String,List> to Json with array of json object
I have a stream of Kafka messages and wanted to build a HashMap<String,List<Object>> to be used as API response in Json format. expected response: actual response: Answer It is now working using these changes: Convert Kafka message string to JSONObject new JSONObject(consumerRecord.value()) Constr…
What is pattern for 2000-11-10T00:00:00+02:00
I need to convert string in 2000-11-10T00:00:00+02:00 format to LocalDateTime object. But when I parse this string to LocalDateTime, it gives error. Which pattern should I use to parse the string to LocalDateTime object? Answer Your string contains time zone and LocalDateTime does not contgain this informatio…
Date conversion format Java to DB different format
I’m making a code in java that executes an Oracle database procedure The format I have to put there in the procedure when I run through the database is dd/MM/yyyy. I have to send this date from my java code using a CallebleStatement setDate with the date yyyy-MM-dd (which is the Date format in java) Whe…