Morgan Stanley Interview Questions – Set 1
Recently I have appeared for Java developer interview at the Morgan Stanley, Mumbai. It was a Video conference interview. Here are the set of questions asked to me : Tell me about your current project and your roles and responsibility. Write a java function to reverse a string using recursion Write a java program […]
Types of Class Loader | Delegation Algorithm | JVM Internals
In previous articles, we learned about JVM architecture and one of its component Class Loader SubSystem. In this article, we will discuss about Types of Class Loaders and How Class Loader uses Parent delegation Algorithm to load the class. If you have not gone through previous article on JVM Internals, I would encourage you to read that first. […]
Class Loader SubSystem | JVM Internals
In our previous article of JVM internals series, we learned about what is JVM, basic architecture of JVM and briefly understood its components. In this article we will discuss in detail about Class Loader SubSystem component of JVM architecture . Class Loader SubSystem Java’s dynamic class loading functionality is handled by the Class Loader SubSystem. […]
JVM Architecture Introduction | JVM Internals
Being a java developer, it is expected from us to have basic knowledge of JVM architecture, as it enables us to write code more efficiently. Also from the interview perspective JVM architecture, Class loader subsystem, JVM memory management are frequently discussed topics with 3-5 year experienced java developer. If you are able to answer these questions, you will create good impression […]
What is the use of private constructor in java?
In Java, we can use any access modifier (i.e. public, protected or private) with constructor. So, what are the uses of making constructor private? First thing that strikes your mind is Singleton Design Pattern which is also one of the most asked Core Java Interview Question to the 3-4 yr exp Java developers. Apart from creating singleton class, private constructor […]
Interface vs Abstract class in Java
Interface has been evolved a lot in last two releases of java. Refer interface evolution in java for the same. However, there are still many differences between interface and abstract class. It is one of the most asked interview questions for entry level java developer interviews. Even though both are used to achieve abstraction in java, there are significant differences […]
Program to Check Whether a Number is Prime or Not
Prime Number A prime number can be divided, without a remainder, only by itself and by 1. For example, 13 can be divided only by 13 and by 1, so it is a prime number. In other words, When the only two factors of a number are 1 and the number, then it is a Prime […]
Threadpool using Executor Framework | Java Concurrency Utilities
The JDK 1.5 Executor framework is a combination of various Executor interfaces and Executors utility class to provide a thread pool feature in Java. In server side programming, Thread pool is an important concept to maintain scalability, robustness, and stability of the system. Thread pool is a pool of worker threads, which is ready to perform any task given to them, […]
Mediator Design Pattern
Mediator Design Pattern is one of the Behavioral Design Pattern. With the Mediator Design Pattern, communication between objects is encapsulated with a mediator object. Objects no longer communicate directly with each other, but instead communicate through the mediator. This reduces the dependencies between communicating objects, thereby lowering the coupling. Definition GoF Definition: Define an object that encapsulates […]
Observer Design Pattern
Observer Design Pattern is one of the Behavioral Design Pattern. Observer design pattern is useful when you are interested in the state of an object and want to get notified whenever there is any change. Definition GoF Definition : The Observer Design Pattern defines a one-to-many dependency between objects so that when one object changes state, all […]
