In This tutorial, I have tried to provide commonly asked Java coding interview questions and answers. 1) WAP to swap 2 numbers without using 3rd variable(Don’t use ‘+’ and ‘-‘ Operator). a) Using Arithmetic Operators: b) Using Bitwise Operators 2) Write a Java Program to find duplicate elements in an array with and without using … Read more
This Article on JAVA Interview Questions is intended to help SDET understand the fundamental concepts of Core Java for interview purposes. 1) What is Java? Java is a high-level, object-oriented programming language that helps developers write platform-independent code that can be executed on any platform. 2) What is the difference between JDK, JRE, and JVM? … Read more
Jackson API is a high-performance, feature-rich, open-source Java library for processing JSON. It can serialize or map Java objects to JSON and vice-versa. The Jackson Library includes three components: Jackson Databind, Core, and Annotation. Jackson Databind has inner dependencies on Jackson Core and Annotation. Therefore, including Jackson Databind alone as a Maven dependency will include … Read more
Design patterns are design-level solutions for recurring problems and are used extensively in programming. Design patterns are like rules and guidelines of best practices as they provide the concept to tackle the problems and design a solution. Although the use of design patterns is optional, However, the knowledge of them and how to use them … Read more