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Articles on Trending Technologies
Technical articles with clear explanations and examples
Different C++ Versions
C++ is a general-purpose, object-oriented programming language, which was developed by Bjarne Stroustrup at Bell Labs in the 1980s. It's an extension of the C language as it includes C features with additional object-oriented concepts like classes, inheritance, polymorphism, encapsulation, and abstraction.Before, it was known as "C with Classes" around 1979, but later renamed as C++ in 1983. These versions of the C++ language are compilers, which are implemented with the following rules made by the ISO C++ community, the community that looks over the development of the language. Here is the following list of C++ versions. ...
Read MoreExplain the basic structure of a program in Java?
In this article, we will learn about the basic structure of a program in Java. Java is widely used for developing large-scale applications, including Android apps, web applications, and enterprise software. To write a Java program, it's essential to understand its basic structure, which consists of several key components. Components A typical structure of a Java program contains the following elements: Package declaration Import statements Comments Class definition Class variables, Local variables Methods/Behaviors ...
Read MoreHow many ways are there to register a driver in Java?
In this article, we will learn different ways to register a driver in Java. JDBC (Java Database Connectivity) is a standard API used to connect Java applications with databases. Before interacting with a database, you must register the JDBC driver so that the DriverManager can recognize and load it.To connect with a database using JDBC, you need to select the driver for the respective database and register the driver. You can register a database driver in two ways: Using Class.forName() method Using the registerDriver() method Register Driver Using Class.forName() Method The ...
Read MoreWhat is the importance of the Container class in Java?
In this article, we will learn about the importance of the Container class in Java. The Container class plays a vital role in creating graphical user interfaces (GUIs) and managing the layout of components. What is the Container Class? A Container class can be described as a special component that can hold a group of components. There are two types of Swing Containers they are top-level containers and low-level containers. Top-level containers are heavyweight containers such as JFrame, JApplet, JWindow, and JDialog. Low-level containers are lightweight containers such as JPanel. The most commonly used containers are JFrame, JPanel, and JWindow. ...
Read MoreHow to write recursive Python Function to find factorial?
We can write a recursive function in Python to find the factorial of a number. Recursion means that a function calls itself repeatedly to work through different stages of the same task. This technique is useful for tasks that follow a repetitive pattern or have a step-by-step structure like calculating factorials, generating the Fibonacci series, or navigating tree structures (tree traversal). The factorial of a number is the product of all positive integers from 1 to that number. It is represented using the symbol n! and defined as - n! = n X (n - 1) X (n - 2) ...
Read MoreHow to Create Your Own Annotations in Java?
When we start learning Java, we often wonder about symbols like @override and @inherited. They are a special kind of tag termed as Annotations that can be applied to classes, methods, fields, parameters, and other elements of the code. Java provides support for some built-in annotations, however, we are allowed to create our own annotations too. In this article, we are going learn how to create and use our own custom annotations. Before creating our own annotations, let's familiarize ourselves with the basics of annotations in Java. What are Annotations? Annotations are features of Java that allows us to add ...
Read MoreDifference Between VB.NET and Java
VB.NET and Java are the two widely used programming languages available nowadays. They serve to develop a variety of software including web and android applications. The features and capabilities of both languages make it difficult to choose one over another. In this article, we will compare and analyze them based on some parameters such as syntax, features, performance, and applications to point out the difference between VB.NET and Java. VB.NET vs Java Before discussing the difference between both technologies, let's have a quick introduction about them. VB.NET It is an abbreviation that stands for Visual Basic .NET. It is ...
Read MoreCan we define a parameterized constructor in an abstract class in Java?
A common question in Java OOPs is whether abstract classes can have parameterized constructors. Yes, we can define a parameterized constructor in an abstract class. What is a Parameterized Constructor in Java A parameterized constructor is a special type of class constructor that accepts parameters/arguments when creating an object. Unlike a default (no-arg) constructor, it allows you to initialize an object with specific values at the time of creation. Syntax The Following is the syntax: public class ClassName { private dataType field1; private dataType field2; // Parameterized ...
Read MoreIs there a case when finally block does not execute in Java?
Questions related to Java exception handling are very frequent in interviews for many companies and even in exams. One such question that an interviewer might ask is whether there is a case when the finally block does not execute in Java. We will try to find the answer to this question in the simplest way possible. In Java, the finally block is designed to execute regardless of whether an exception is thrown or handled in the try-catch blocks. However, finally block may not execute if System.exit() is called either inside try or catch block. Before moving to the question, ...
Read MoreC++ Program to Implement Parallel Array
A parallel array is a structure that contains multiple arrays. Each of these arrays are of the same size and the array elements are related to each other. All the elements in a parallel array represent a common entity. Here, we provide the basic example to understand the parallel array in C++ − employee_name = { Harry, Sally, Mark, Frank, Judy } employee_salary = {10000, 5000, 20000, 12000, 5000} Here, The name and salary of 5 different employees is stored in two different arrays. Example of Parallel Arrays This is an implementation of a parallel array ...
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