@PreConstruct and @PostConstruct annotation Spring Boot Example, @PostConstruct: This method is called after the Spring bean (in this case, ExampleBean) has been created and all de...

verify() method in Mockito example,The verify() method in Mockito is used to confirm that specific interactions with mocked objects occurred. This is particularly useful in testing...

Java Interview questions for Freshers (1-2),Edited from: https://www.geeksforgeeks.org/java-interview-questions/ 1. Is Java Platform Independent if then how? Javac compiles the pro...

🧩 LeetCode Challenge: Remove Element | Top Interview Questions [Java Solution], Introduction In this classic LeetCode problem, you’ll be working with arrays in a practical way to...

With Spring can I make an optional path variable?, Yes, you can make a path variable optional in Spring by using @PathVariable with the required attribute set to false. However, fo...

🧩 LeetCode Challenge: Merge Sorted Array | Top Interview Questions [Java Solution], Introduction If you're preparing for coding interviews, especially for roles in FAANG or simila...

Java Stream Scenario Based Interview Question,You have a list of employees with fields like name, age, and department. Write a code snippet to group employees by department using J...

Java scenario based interview questions,You have a list of strings: ['apple', 'banana', 'cherry', 'date', 'fig', 'grape']. Write a code snippet to filter out strings starting with ...

How does Optional.ifPresent() differ from Optional.orElse()?,Optional.ifPresent() and Optional.orElse() are two methods in Java's Optional class, designed to handle optional values...

Mastering SOLID Principles for Java Interviews, Java Fundamentals (7 Part Series) 1 Understanding Data Types in Java: Common Pitfalls and Best Practices 2 Understanding the + Opera...

Java Streams | What is the difference between sorted() and distinct() in streams?,For Explanation watch video sorted() The sorted() method is used to sort the elements of a stream....

Sorting Smarts in Java: TreeSet and TreeMap, Collections Framework Essentials (8 Part Series) 1 Understanding ArrayList: Essential Knowledge for Interviews 2 Arrays vs. ArrayLists:...