Java Developer Interview Prep
Mihai Popescu

Mihai Popescu

This is a series of articles about subjects I came across my preparations for interviews as a Java developer. I have created these firstly for my personal use but hopefully will help others too.

Functional Interfaces in Java

Dec 10, 20243 min read

Java functional interfaces are a powerful feature for enabling functional programming in Java. Here's an overview: What are Functional Interfaces? A...

Functional Interfaces in Java

Java Threads: Basics and Modern Usage

Dec 9, 20244 min read

1. Basics of Threads A thread in Java is a lightweight process that enables concurrent execution of code. It allows multiple tasks to run in parallel...

Java Threads: Basics and Modern Usage

Spring AOP

Nov 27, 20243 min read

Spring AOP (Aspect-Oriented Programming) is a powerful feature of the Spring Framework that allows you to define cross-cutting concerns like logging,...

Spring AOP

Design Patterns in Java

Nov 26, 20245 min read

Design patterns in Java are categorized into three main types: 1. Creational Patterns These deal with object creation, ensuring flexibility and...

Design Patterns in Java

Lazy Initialization and Lazy Loading

Nov 26, 20243 min read

Lazy Initialization and Lazy Loading are techniques used to improve the performance and efficiency of a system by delaying the creation or loading of...

Lazy Initialization and Lazy Loading

Java Map Data Structure Interface

Nov 26, 20244 min read

Maps in Java are part of the java.util package and are used to store key-value pairs, where each key maps to exactly one value. They are widely used...

Java Map Data Structure Interface