Category "java"

How to use Kafka with SSL via logback appander?

I use this logback appender to send logs to Kafka: https://github.com/danielwegener/logback-kafka-appender When Kafka was PLAINTEXT everything worked correctly.

how to get MicroProfile REST Client annotation in ClientRequestFilter

My RestClient is annotated by a custom annotation and I want to get the annotation value in a ClientRequestFilter. Here is my MicroProfile RestClient: @Path("/g

How to create a timer on Button and save in SharedPreferences(android)

I want to create a button that after clicking this button will be not clickable for 1 min, but after restarting a program, this button is clickable cuz i didn't

SQS Message never gets deleted

We do use an SQS to receive notifications from S3, but for some reason we receive the exact same message again and again. Seems like the message never gets dele

Do a connection using EventSource from Android with HTTPS to Spring-Boot server (JAVA)

I have a spring-boot server which only accepts https requests, the point is that I need it to be able to communicate with the client (android) using SSE. I have

Develop a multi-threaded application. Don't use synchronized word [duplicate]

Free checkout. The fast food restaurant has several cash desks. Customers stand in line at a particular cash desk, but can move to another que

WatchService large number of directory (recursive)

I want to detect changes inside a directory, so I implement by using WatchService public class DirWatcher implements Runnable { private Path path; priv

TreeSet Sorting Order Confusion

I know that TreeSet in Java sort its elements in ascending order. For integer it would be 1, 2, 3, 4, 5, for String it would be alphabetical. However, what if I

Spring-batch flow / split after a step

I am building a spring-batch solution that contains the following process: step 1 : split a list into multiple lists step 2 : process each sub-list step 3 :

In java spring, how to best "change secret in production"?

I am currently creating a Java Spring application that works with the spring security JWT. Everywhere I look and read about the "secret string", it says should

Update recyclerview item from background thread after changing configuration

I have a RecyclerView in a Fragment. Also I have an AsyncTask which updates items of RecyclerView from background thread. The problem is when I rotate the devic

How to dynamically access multi level object Java 8

I have an API that returns a parent with its children, I need to implement that in java 8 to be able to return them as below: A -> has B as Child, and C as C

Using comparable in a method in the main method

I am trying to check the values of a comparable method and assign the 1 and -1 value to true and false. I made a simple if else statement that does just that b

Java/Spring: How to retrieve password from JBOSS vault

I am trying to modify out Java/Spring Framework web application to retrieve the Oracle database password from the JBOSS Password vault Currently, Our mvc-dispat

How is the best way to extract a section from word document with Apache poi?

I´m using Apache poi (XWPF) with Springboot in java 11. I need to extract the section number 2 (title and content) from a word document with the follow nu

When searching for non-primary key in MySQL using DAO it keeps returning a null object

The first method works but the second method keeps returning a null object. I don't see any difference except that flight_no is the primary key. What went wrong

jstl variable is not even removed after setting it to null or using the c:remove

im trying to remove a session variable using the c:remove or c:set to ${null} but it did not work. I'm expecting the variable will be removed once I refresh the

Bindy skipping empty csv files

I built a camel route that unmarshals a csv file using camel bindy and writes the contents to a database. This works perfectly apart from when the file is empty

implementing dijkstra's algorithm using a priority queue

So I'm trying to implement Dijkstra's algorithm. I understand Dijkstra's works, but I struggle to turn the concept into code. I have what I thought would be the

How to create a button which if it's clicked, it expands and shows details?

I have this table, where there are several entries with an orderID. To show more informations about the entry, you can click on the but Is this think doable w