Top 20 Java String Interview Questions and Answers

This article provides 20+ Java String Interview Questions and Answers. String related interview questions come up frequently in Java interviews. So, we hope these help you prepare well for the same. Java String Interview questions & answers: What is String in Java?   What are different ways to create Strings?   What is String constant […]

Java Object Oriented Programming interview questions and answers

In this post, we will cover some of the commonly asked interview questions on Object Oriented Programming(OOP) concepts. These are frequently asked in developer and architect level java interviews alike. 1. What is Object Oriented Programming? Object-oriented programming (OOP) is a programming paradigm based on the concept of “objects”, which may contain data, in the […]

Java Interview Questions for Experienced Professionals (Part 1)

This article provides interview questions for experienced Java professionals.   Question 1 The invocation of an Object’s finalize() method is the last thing that happens before an object is garbage collected. True or False ? Answer First the object is collected and then it is finalized. Here is the Object lifecycle for reference: Created In […]

Interview questions on Java main method

In this article, we will discuss about the main method in Java and possible interview questions.   Java main method   In Java, main() method is the entry point for your application and will subsequently invoke all the other methods required by your program.   The main method accepts a single argument: an array of […]

Java Interview questions – Part 4

  Can a class be declared both abstract and final ? If not, why ?   We can not declare a class both abstract and final. This is because, the keyword abstract represents an incomplete class which depends on the subclasses for its implementation. Creating a subclass is compulsory for a abstract class . final […]