A list of Java topics at OpenGenus IQ

Implement Doubly Linked List in Java

In this article, we have explored the design of Doubly Linked List and implemented it in Java Programming Language using the concepts of Object Oriented Programming.

Java

Java program for Compound Interest

In this article, we have explored the concept of Compound Interest and implemented a Java program to compute Compound Interest.

Java

Error handling by exception in Java

In this article, we will talk about what error handling by exception is in Java, how to do it, and what it is used for.

Java

Numeral Converter in Java with GUI (app)

In this article, we will learn how to develop an application for Numerical Converter to convert one positional numerals into another with GUI.

Java

Inheritance in Java: Basics, Advantages and Best Practices

In Java, inheritance is accomplished via extending a class, which allows the new class to take on the parent class's methods and properties. In this post, we'll examine the fundamentals of Java inheritance and look at its benefits for OOP.

Java

Student Management System in Java

In this article, we will discuss the implementation of a student database GUI using JAVA and Swing. Java is a popular programming language, while Swing is a user interface toolkit for creating graphical user interfaces (GUI) in Java applications.

Java

Maze Generator and Solver in Java

In this article, we will develop a Java program that generates a Maze and solves it using Depth-First Search with help of Backtracking. This is a strong profile for SDE portfolio.

Java

Introduction to Android Development

In this article, we will take a closer look at Android Development and explore what it takes to become an Android developer.

Java

Timer Console Application in Java

In this article, we will understand how to develop a Timer Console Application which simulates a countdown timer with a Progress Bar and a countdown timer display.

Java

Progress bar / indicator in Java

In this article, we will discuss several ways to program a Progress bar in Java in command line and as GUI.

Java

Password generator, strength checker and password crack time estimator in Java

In this article, we will discuss several ways to code a program that generates random password, And another program that checks the strength of user's input password in Java, And final program that estimates the time needed to crack a user's password.

Java

Multi-thread Java program to find all prime numbers < N

In this article, we will develop a multithreaded java program to find all prime numbers below than N. We will use Sieve of Eratosthenes algorithm to find prime numbers and it will be run in parallel.

Java

Convert array to list in Java [4 methods]

In Java, it is often necessary to convert an array to a list or vice versa. In this article, we will explore several ways to convert an array to a list in Java.

Java

GUI in Java [Complete Practical Guide]

In this article, we learn about GUI in Java with Java AWT, Swing, JavaFX, and some other relevant concepts.

Java

Calendar Application in Java

This article will guide you through the process of creating a simple calendar application in Java. The article will cover the basics of working with the Calendar class, how to format the output, and how to highlight the current date.

Java

Minesweeper Game in Java

In this article, we will develop Minesweeper Game in Java Programming Language. We will analyze the requirements of the game, design a solution and implement it in Java. This is a strong project for SDE portfolio.

Java

Typing Speed Test in Java

In this article, we have developed a command line tool to test typing speed for the user. We have implemented this in Java Programming Language. This is a strong addition to a SDE portfolio.

Java

Spell Checker Console Application in Java

In this article, we will develop a spell checker application which checks for spelling mistakes in our input and also suggest possible corrections. We will implement this tool in Java Programming Language.

Java

Stopwatch Console Application in Java

We will discuss the Stopwatch Console Application in Java today. In this application, input can be taken at the same time as output is printed on the console using multithreading.

Java

Calculator Console Application in Java

We will develop a Calculator Console Application in Java Programming Language that uses the previous result in the next calculation and includes Shunting Yard Algorithm.

Java

Recursion in Java

This article will dive into the basic introduction to recursion, and how it is implemented in Java.

Java

Three - Dimensional 3D ArrayList in Java

In this article, we have explored the concept of 3D ArrayList in Java and demonstrated how to perform different operations such as insert, delete, search and much more with Java code snippets.

List of Interview Questions

Interview questions on OOP concepts

Questions about OOP concepts are asked in every organization during interviews, be it product-based or service based. This article covers the most important questions you need to crack any technical round.

List of Interview Questions

70 Spring Interview Questions and Answers

Spring is a Java based framework. It was developed by Rod Johnson. The first version of spring framework was released by Rod Johnson. In this article, we have covered 70 Spring Interview Questions and Answers.

Algorithms

Implementing Quick Sort in Java

In this article, we are going to learn about the implementation of quick sort algorithm in Java.