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Hibernate is one of the most widely used ORM tools for building Java applications. It is used in enterprise applications for database operations. So, this article on hibernate interview questions will help you to brush up your knowledge before the interview.

If you are a fresher or an experienced, this is the right platform for you which will help you to start your preparation for the Hibernate job roles.

Let’s begin by taking a look at the most frequently asked questions in Hibernate Interview Questions.

For better understanding, I have divided the rest of the Hibernate Framework Interview Questions into the following…

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Collection Framework is one of the most important pillars that support the fundamental concepts of the Java programming language. If you are an aspiring Java Developer, it is very important for you to have a strong knowledge of these core concepts before you appear for an interview. Through the medium of this article, I will share the Top 50 Java Collections Interview Questions and Answers that will definitely help you in clearing your interview with flying colors.

The questions in this article have been divided into the following sections:

  • List
  • Queue
  • Set
  • Map
  • Differences

Generic — Java Collections Interview Questions

1. What are the advantages of the Collection Framework in Java?

Below table contains the major advantages of the Java Collection…

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MVC Interview Questions — Edureka

In this article, I have collected the most frequently asked questions which are collected after consulting with top industry experts in the field of design patterns, ASP.NET, and Spring Framework.

In case you came across some other questions during your interviews or have queries that might be helpful for others as well, do share them in the comment section. This MVC Interview question is divided into the following sections:

  • Intermediate Level
  • Advanced Level

Beginners Level MVC Interview Questions

1. Mention what does Model-View-Controller represents in an MVC application?

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The below figure represents the same.

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2. Explain what is MVC?

MVC is an abbreviation for Model, View, and Controller. The MVC architectural pattern separates an application into three components — Model, View, and Controller. In this pattern, the model represents the shape of the data and business logic. It maintains and preserves the data of the application. Model objects retrieve and store model state in a database. The view is basically and technically a user interface. The view segment displays the data-using model to the user and also enables them to modify the data. The controller is the part, which handles the user request. …

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Java Strings Cheat Sheet — Edureka

Are you a Java programmer looking for a quick guide on Java Concepts? If yes, then you must take Strings into your consideration. This Java String cheat sheet is designed for the Java aspirants who have already embarked on their journey to learn Java. So, let’s quickly get started with this Java String Cheat Sheet.

Java String Cheat Sheet

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The string is a sequence of characters. But in Java, a string is an object that represents a sequence of characters. The java.lang.String class is used to create a string object.

Creating a String

String in Java is an object that represents a sequence of char values. …

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Servlet Interview Questions — Edureka

Java Servlets are the main reason behind the simplicity in developing the High-end Web Application as Web Pages due to which the Java Web Application Technology is on the highest demand in present days. In this article, we will discuss the most frequently asked interview questions based on Java Servlets.

  • Intermediate Level Interview Questions
  • Advanced Level Interview Questions

Beginner Level Interview Questions

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Q1. What is a Servlet?

Ans: A Servlet is a Java program that runs on a Web server. It is similar to an applet but is processed on the server rather than a client’s machine.

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While working with classes in Java, constructors are used for initializing the instance of a class. The memory is allocated for the object using the constructor but after the object life-cycle is finished and the object is no longer in use, the memory has to be deallocated and released. This is where destructor in Java comes into the picture. In this article, we will learn about destructors in Java, in the following order:

3. Java finalize() Method

4. Example

What is Destructor?

A destructor is a special method that gets called automatically as soon as the life-cycle of an object is finished. A destructor is called to de-allocate and free memory. The following tasks get executed when a destructor is called. …

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Java Projects — Edureka

The demand for Java is never-ending and many top MNCs are looking for Java Developers. These days, having hands-on experience in java and trying out projects in java would be an added weight to your resume. In this article, we shall try out the top 5 projects that you need to know in 2019.

Online Examination

This particular project is designed to provide a user interface that asks multiple-choice questions and takes inputs from users as the answers and then, finally evaluates all the questions and gives back the output as the individuals result.

package Edureka;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

class OnlineTest extends JFrame implements ActionListener {
JLabel l;
JRadioButton jb[] = new JRadioButton[5];
JButton b1, b2;
ButtonGroup bg;
int count = 0, current = 0, x = 1, y = 1, now = 0;
int m[] = new int[10];

OnlineTest(String s) {
l = new JLabel();
bg = new ButtonGroup();
for (int i = 0; i < 5; i++) {
jb[i] = new JRadioButton();
b1 = new JButton("Next");
b2 = new JButton("Bookmark");
l.setBounds(30, 40, 450, 20);
jb[0].setBounds(50, 80, 100, 20);
jb[1].setBounds(50, 110, 100, 20);
jb[2].setBounds(50, 140, 100, 20);
jb[3].setBounds(50, 170, 100, 20);
b1.setBounds(100, 240, 100, 30);
b2.setBounds(270, 240, 100, 30);
setLocation(250, 100);
setSize(600, 350);

public void actionPerformed(ActionEvent e) {
if (e.getSource() == b1) {
if (check())
count = count + 1;
if (current == 9) {
if (e.getActionCommand().equals("Bookmark")) {
JButton bk = new JButton("Bookmark" + x);
bk.setBounds(480, 20 + 30 * x, 100, 30);
m[x] = current;
if (current == 9)
for (int i = 0, y = 1; i < x; i++, y++) {
if (e.getActionCommand().equals("Bookmark" + y)) {
if (check())
count = count + 1;
now = current;
current = m[y];
((JButton) e.getSource()).setEnabled(false);
current = now;

if (e.getActionCommand().equals("Result")) {
if (check())
count = count + 1;
JOptionPane.showMessageDialog(this, "correct ans=" + count);
void set() {
if (current == 0) {
l.setText("Que1: Which one among these is not a primitive datatype?");
if (current == 1) {
l.setText("Que2: Which class is available to all the class automatically?");
if (current == 2) {
l.setText("Que3: Which package is directly available to our class without importing it?");
if (current == 3) {
l.setText("Que4: String class is defined in which package?");
if (current == 4) {
l.setText("Que5: Which institute is best for java coaching?"); …

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In Java, a class can be defined within another class and such classes are known as nested classes. These classes help you to logically group classes that are only used in one place. This increases the use of encapsulation and creates a more readable and maintainable code. This blog on “Nested Class in Java” will give you a quick to-the-point introduction to nested classes in the Java language. Below are the topics covered in this blog:

  • Types of nested classes
  • Difference Between Static and Non-static Nested Classes
  • Key Points to Remember

Nested Class in Java

The class written within a class is called the nested class while the class that holds the inner class is called the outer class. Below are some points to remember for nested classes in Java…

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Applications of Java — Edureka

Technology is constantly going through an evolution and so are the languages that are used to develop them. Java is one of the popular programming languages having n number of applications. Through this article, I will be listing down the top 10 applications of Java.

  • Desktop GUI Applications
  • Web-based Applications
  • Enterprise Applications
  • Scientific Applications
  • Gaming Applications
  • Big Data technologies
  • Business Applications
  • Distributed Applications
  • Cloud-based Applications

Mobile Applications

Java is considered as the official programming language for mobile app development. It is compatible with software such as Android Studio and Kotlin. Now you must be wondering why only Java? The reason is that it can run on Java Virtual Machine(JVM), whereas Android uses DVK(Dalvik Virtual Machine) to execute class files. …

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One of the most popular frequently asked Java Interview Questions is, “Given an integer x, write a java program to find the square root of it”. There are many ways to solve this problem. In this article, let’s check out different ways to find square and square root in Java.

  • Using the Math.pow function
  • By using Math.pow() function
  • Without using any inbuilt functions


Swatee Chand

Tech Blogger and Enthusiast

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