I am trying to parse following datetime String to LocalDateTimeObject, however I am not able to identify the format of the datetime string. Sat, 09 Oct 2021 02:10:23 -0400 How should I determine the pattern of the above string? Answer You should first check if the date string matches any of the Predefined For…
Tag: java
List of int array in Java
How do I print the contents of a List that contains a primitive type int object in it? Prefer answers to print this in one line. This is the code I have. This will give me [0,1] but I am looking for {[0,1],[2,3]} Answer The following one-liner can meet your requirement: It uses the positive lookbehind and pos…
How to send both commands and files using Netty
I don’t understand what I’m doing wrong. How to send both commands and files. Below are the server and client pipelines. client pipeline: server pipeline: The fact is that before I send the file, I send a command (FileInfo) that the file described in this FileInfo will be sent soon. Then the file …
How do I connect methods with dots? – Refactoring
I am trying to refactor my code. But I dont know how to do what I want to do. I dont know how it’s called so I dont find it with google. My Code: I want to refactor everything so the final version looks like this: or like this: So the “If(from).IsMultipleOf(3)” shall return true/false and if…
JAVA: Error creating bean with name; Unsatisfied dependency expressed through field
I have the following code and structure. I am getting the following error, it is very long error message. Error creating bean with name ‘departmentController’: Unsatisfied dependency expressed through field ‘departmentService’; nested exception is org.springframework.beans.factory.Unsa…
Java wrapper classes – change value of parameters
I keep seeing the following when I look up why use wrapper classes: Objects are needed if we wish to modify the arguments passed into a method (because primitive types are passed by value). if we set the parameter to the return value we can modify the primitive everything in java is passed by value What does …
How can I show Multiple Rows in JSON
I need to show sql result in a JSON like this in a spring boot app. Class Repo Service Controller I’m getting this message on log: query did not return a unique result: 94; nested exception is >javax.persistence.NonUniqueResultException: query did not return a unique result: 94 After that, I wanna de…
Spring Boot async task stuck on shutdown
As per spring documentation for setWaitForTasksToCompleteOnShutdown Set whether to wait for scheduled tasks to complete on shutdown Does it mean that if any task is stuck on some long running process and we explicity try to stop the container, it will not be terminated untill that task is finished? Thanks for…
Config multiple message properties
I have properties files and I need to set them both to be loaded, but I have no idea how to do this with multiple properties Answer Use @PropertySources. Annotate either a config class that holds the attributes of the files, or your Main class. e.g.:
get content html page with web view in android
I am working on an Android project in which I am loading an HTML page from the internet, not locally and then displaying it in WebView. It works fine, but unfortunately, when I click on any of the element in WebView, it opens the link in Browser. What changes do I need to make so that any links clicked within