Learn how to find the index of the smallest element in an array.
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How to Use Pair With Java PriorityQueue
Learn how to use Comparators with PriorityQueues and how to change the sorting order in such queues.
assertEquals() vs. assertSame() in JUnit
Compare the assertEquals() and assertSame() methods.
Java Weekly, Issue 540
Avoiding n+1 queries, Spring AI, JMS, Graal dev kit, and GitHub actions on Raspberry PI!
Spring WebClient exchange() vs retrieve()
In this article, we explore the key methods from the WebClient interface, including retrieve(), exchangeToMono(), and exchangeToFlux().
Resolving Security Exception: java.security.UnrecoverableKeyException: Cannot Recover Key
Learn everything you need to know about java.security.UnrecoverableKeyException – what causes it and how to fix it.
Intro to Apache Commons Configuration Project
Apache Commons Configuration can be used to allow us to specify configuration parameters to be loaded at runtime by our application. We look at a few use cases and types of configuration files.
Setting Default TimeZone in Spring Boot Application
You may wish your Spring Boot application to run with a timezone different from your machine’s default. In this tutorial, you can learn to configure this at different points during Spring’s startup.
Role-Based Access Control in Quarkus
Explore the RBAC system and learn how to leverage the Quarkus framework to implement it.
Unit Test for hashCode() in Java
Explore the importance of unit testing for the hashCode() method in Java.
Converting Image to BufferedImage in Java
A quick and practical guide to converting images to BufferedImage in Java.
Calculating Moving Averages in Java
Let’s explore various methods and techniques for calculating moving averages, ranging from traditional approaches to libraries and Stream API’s.
PersistenceUnit vs. PersistenceContext
Learn the main differences between PersistenceUnit vs. PersistenceContext in the JPA context.
Convert String to OffsetDateTime
Learn why converting strings to OffsetDateTime objects is crucial for handling date and time in Java applications.
Implement the Builder Pattern in Java 8
Learn how to implement a Builder Pattern in Java 8.
Compress and Create a Byte Array Using GZip
Learn how to get the compressed data in a byte array when using the GZIP file format.
“Not a Managed Type” Exception in Spring Data JPA
Explore the reasons behind the “Not a Managed Type” Exception in Spring Data JPA.
Introduction to Simple Java Mail
Explore the process of setting up Simple Java Mail and learn how to send emails, including attachments and HTML content, handle exceptions, and more.
Find the Length of the Longest Symmetric Substring
Learn how to handle the symmetric substring expansion methods, taking into account the specific requirements such as input size and computational efficiency.
Download File from S3 Given a URL
Learn how to download a file from S3 given a URL with Java and AWS SDK.