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Core Java
Unit Testing of ExecutorService in Java With No Thread sleep
Unit testing concurrent code, especially code utilizing ExecutorService, presents unique challenges due to its asynchronous nature. Traditional approaches often involve…
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Core Java
Casting Maps into Complex Objects in Java
In Java, there is often a need to convert a Map to a complex object (POJO – Plain Old Java…
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Core Java
Preventing IndexOutOfBoundsException with List.subList() in Java
The List.subList() method in Java allows you to create a view of a portion of a list, defined by a…
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Core Java
Implement Elvis Operator in Java 8
In Java 8, the Elvis operator (often written as ?: in Groovy and Kotlin) is not available as a built-in…
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Core Java
Mapping Enums and Strings with MapStruct
MapStruct is a Java annotation processor that streamlines the implementation of mappings between Java beans, including complex scenarios such as…
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Core Java
Using Social Login Authentication in Spring Boot with OAuth2
Social login is a mechanism that allows users to sign into an application using their existing credentials from social networking…
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Core Java
How to Use Pair With Java PriorityQueue
Java’s PriorityQueue is a data structure that allows us to store and retrieve elements in a specific order. This article…
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Core Java
Handle Null Values In ArrayList.addAll()
The ArrayList class in Java is a commonly used data structure. One of its methods, addAll(), allows us to add…
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Core Java
Convert Float ArrayList to Primitive Array in Java
In Java, collections such as ArrayList<Float> are often used to store a dynamic list of objects. However, there might be…
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