# Interview

- 20 May
### Rotate Matrix by 90 degrees in java

In this article, we will look into another interesting problem related to 2D Arrays. Given a Matrix of N X N Dimension we have to Rotate matrix by 90 degrees. We will perform Rotation both Clockwise i.e. Right Rotation and Anti-Clockwise i.e. Left Rotation respectively. We will discuss each operation in detail along with a […]

- 16 April
### Top 40+ Hibernate interview questions and answers

Hibernate is most popular Object relational Mapping (ORM) framework and if you have used hibernate and has good experience on it, then you may face good hibernate interview questions. I am sharing some important hibernate interview questions here. 1. What is ORM? ORM stands for Object Relational mapping. It is programming paradigm which is used […]

- 16 April
### Data Structures in java

In this post, we will see about various data structures in java. Data structure is a way of storing and organizing data. Data structure provide a way to process and store data efficiently. For example: Imagine you have pile of books on the table and you are going to read these books one by one […]

- 30 December
### Rock Paper Scissors Game in Java

Learn about how to implement Rock Paper Scissors game in java.

- 29 November
### Top 100+ Java coding interview questions

I have been posting data structure and coding interview questions on various topics such as Array, Queue, Stack, Binary tree, LinkedList, String, Number, ArrayList, etc. So I am consolidating a list of java coding interview questions to create an index post. I will keep adding links to this post whenever I will add new java […]

- 09 October
### Java program to find first and last digit of a number

In this article, we are going to find first and last digit of a number in Java. To find first and last digit of any number, we can have several ways like using modulo operator or pow() and log() methods of Math class etc. Let’s see some examples. Before moving to example, let’s first create […]

- 03 October
### Happy Number program in Java

In this article, we are going to learn to find Happy Number using Java. Let’s first understand, what is Happy Number? What is a Happy Number? A number which leaves 1 as a result after a sequence of steps and in each step number is replaced by the sum of squares of its digit. For […]

- 30 September
### Find Perfect Number in Java

In this article, we are going to find whether a number is perfect or not using Java. A number is called a perfect number if the sum of its divisors is equal to the number. The sum of divisors excludes the number. There may be several approaches to find the perfect number. For example: 28 […]

- 28 September
### How to find Magic Number in Java

In this article, we are going to learn to find Magic Number using Java. Let’s first understand, what is Magic Number? What is a Magic Number? A number which leaves 1 as a result after a sequence of steps and in each step number is replaced by the sum of its digits. For example, if […]

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