Gain Java Knowledge

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Hi Everyone, Gain Java Knowledge has been designed with a special intention of helping students and professionals preparing for job interviews. I have good P...

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JAVA INTERVIEW QUESTIONS AND ANSWERS

Stop Writing If-Else Build a Rule Engine in Spring Boot

Why 1 == 1 is True but 1000 == 1000 is False

How to Find the Longest String in an Array using Java 8

Fix CORS Error in Spring Boot in 10 Minutes!

No More If-Else Write Smarter, Cleaner Code

Send OTP via SMS Using Spring Boot

Java Lead Technical Interview Questions for 2025

How to print numbers (1 to 5) and letters (A to E) alternately in a synchronized manner in Java

Designing a Dynamic Rule Engine in Spring Boot for Real-Time Applications

Request Body and Parameter Validation in Spring Boot

Most Important topic to cover before Java + Spring boot Interview

How to replace multiple if-else conditions with map

Java Tricky interview questions for experienced

Why is 1 == 1 is true but Value greater than 127 is false.

Rule Engine for Spring Boot

How is TakeWhile, Dropwhile different from Filter method in Java

Pessimistic Lock in Spring Boot

Is Optional class methods compulsory in Java

Stop using @value annotation in spring boot

How to use CommandLineRunner in Spring Boot Application

Java 8 Stream Tricks

How to implement custom collector using Java Streams

Log time taken by API to return response

How to use Async Schedulers in Spring Boot

Logging Correlation in Spring Boot 3.2.1

Using OpenAI ChatGPT APIs in Spring Boot

Spring Boot Logging Best practices

StringUtils Methods In Java

Spring Boot API Generic Response