interview questions Archive
In java, string objects are immutable because String objects are cached in String pool. Immutable simply means unmodifiable or unchangeable means once string object is created its data or state can’t be changed but a …
This tutorial has popular Spring MVC Interview Questions and answers. These have been written to help you prepare for the interviews and quickly revise the concepts in general. Before reading these questions you can practice …
We can remove duplicate items from ArrayList in java by simply converting ArrayList into Set in Java. But Set does not maintain insertion order as by List. So whenever we will convert ArrayList to HashSet …
Here I have categorized core java interviews questions and answers for fresher and experience developer in Basics of core java interview questions, OOPs interview questions, String Handling interview questions, Multi-threading interview questions, collection interview questions, …
This is very common question in core java interview for entry level programmer so let’s discuss some important point of difference as below: Difference between interfaces and abstract classes abstract class interface Abstract class may …
In java hashCode() and equals() methods have been defined in Object class which is parent class for java objects that means all classes in Java inherit these methods. Object class implements these methods for general …
In java main() method is special method, it is entry point for launching core java application not like servlet and other containers. In Core java application we run the application then JVM search for public …
