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Core Java
Check if String Contains Only Letters & Numbers
Ensuring that a string adheres to business rules is fundamental for the functionality of many applications. Frequently, we must verify…
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Core Java
Mock Java Constructors using Mockito
Mockito‘s MockedConstruction feature allows developers to mock the construction of objects during testing, providing greater control and flexibility. This tutorial…
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spring
permitAll vs anonymous() in Spring Security
Spring Security is a powerful framework providing authentication, authorization, and other security features for Java applications. It integrates seamlessly with…
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Core Java
Log4j 2 Config Using a Prop File
Log4j 2, an extensively used logging framework developed in Java, addresses numerous architectural shortcomings of its predecessor, Log4j. Renowned for…
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Core Java
Expand Columns with Apache POI
Apache POI stands as a widely used Java API designed for programmatically manipulating various Microsoft Office documents including Word, Excel,…
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Kubernetes
Difference Between kubectl apply and kubectl create
Kubernetes serves as an orchestration tool designed for containerized applications, utilizing the kubectl command line interface to communicate with a…
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Enterprise Java
Spring Data JPA Pagination and Sorting example
One common challenge in application development is handling large datasets while maintaining responsiveness. With databases often containing vast amounts of…
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spring
Spring Boot REST API Timeout (with Examples)
Timeouts in REST APIs happen when an API exceeds the anticipated or permitted duration for completion within a Spring Boot…
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Core Java
Check if Letter Is Emoji With Java
Emojis frequently manifest within text that we might need to handle in our code. This scenario often arises when dealing…
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Core Java
Value-Based Classes in Java
In Java 8, value-based classes represent immutable data structures with defined value equality, crucial for functional programming paradigms. With Java…
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