I have been trying to create a new Maven Project in Eclipse (I am using Windows 10), however when the project is created, it shows: When looking at the POM.xml, it shows.. I tried deleting the .m2 folder and Right-click project -> Maven -> Update Project.. It shows me.. In one solution from another SO p…
Exceptions or null in java
I have the next doubt. According to good practices of java, how to manage the cases in which the object can not be found and we want to know why. For example, if someone has problems logging in our system and we want to inform them exactly what is the problem, we cannot return null because we lose the reason
java.lang.ClassNotFoundException: Cannot find implementation for
I need help with the following error: UserMapper interface has annotation. I use eclipse Neon with buildship plugin, org.mapstruct and spring are imported with Gradle. It works without this error on my colleague’s IntelliJ Code for UserMapper: From what I read it could do something with compiler failing…
Apache HttpClient – Log version of TLS that’s negotiated in a request?
I’ve got lots of code that uses Apache’s HttpClient, and I’d like to log the version of TLS that’s being negotiated when a request is made. Is this possible? I’d prefer an approach that doesn’t requiring changing how the request is being built, if possible – something…
How to run a gradle task from a java code?
I need to run the gradle eclipse task to an external gradle project from a java method, is it possible to do it using the Gradle Tooling API ?
How to add to an existing MongoDB Bson Filter in Java
I’m using MongoDB 3.6.3 and the 3.6.0 Mongo & Bson drivers for Java. Given the following filter: I need to conditionally add another field to filter, effectively making it: Is there a way to do this by appending that field to filter, or do I have to create the filters separately? eg. Answer Filters.…
NotificationCompat – how to add action without icon?
Above code creates notification and adds one action (button) to it. I want my button to be without icon displayed, but I don’t know how to do that, because icon in parameter addAction is required and not nullable. Is it even possible to add action button to notification without any icon (btw, icons on a…
Debezium flush timeout and OutOfMemoryError errors with MySQL
Using Debezium 0.7 to read from MySQL but getting flush timeout and OutOfMemoryError errors in the initial snapshot phase. Looking at the logs below it seems like the connector is trying to write too many messages in one go: Wonder what the correct settings are http://debezium.io/docs/connectors/mysql/#connec…
Convert ZonedDateTime to LocalDateTime at time zone
I have an object of ZonedDateTime that is constructed like this How can I convert it to LocalDateTime at time zone of Switzerland? Expected result should be 16 april 2018 13:30. Answer How can I convert it to LocalDateTime at time zone of Switzerland? You can convert the UTC ZonedDateTime into a ZonedDateTime…
AWS S3 doesObjectExist costs
AWS S3 Java SDK provides a method doesObjectExist() to check if an object exists in S3. What operation does it use internally? Is it GET, LIST, or HEAD ? My concern is mainly related to its costs. From S3 documentation the costs of US west Oregon are- PUT, COPY, POST, or LIST Requests $0.005 per 1,000 request…