Java offers all the basic functionalities in file handling such as: Create Read Write Delete Before you begin with any of the file handling operations, you must import the java.io.File package, and then you have to create a Java file object. Apart from this, refer to the table below in order to learn all the…
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Polymorphism in Java
Now, in both the subclasses, the “material” method will be used, and with polymorphism, it is possible to use the same method “material” of parent class in both the subclass. In Java, there are two types of Polymorphism available. Static Polymorphism Dynamic Polymorphism In this tutorial, you’ll learn about both of these with appropriate…
Introduction to Java Applets for Beginners
In Java, Applets is a program that can run on a Web Page. Applet runs in a browser, and it can be embedded in the web browser (HTML page) using the Object tag. Applet makes Java more compatible and allows it to create dynamic web pages. Java Applet has a life cycle with appropriate methods…
How to perform DNS lookup on a domain name in PHP?
PHP offers a built-in function dns_get_record() to fetch DNS resource information associated with a domain name. Syntax of dns_get_record() The following is the syntax of dns_get_record() function. dns_get_record ( string $hostname [, int $type = DNS_ANY [, array &$authns [, array &$addtl [, bool $raw = FALSE ]]]] ) : array This function takes a…
Design patterns every developer should know about
Design patterns are reusable solutions to problems that we often face as software engineers. It is not a component or class that can be reusable. It is more like a statement of the problem and solution that works best for that specific problem. The design patterns can be used as a plug-n-play part of the…
Arrow Functions in JavaScript
One of the most admired features in modern JavaScript is the introduction of arrow functions, using the new => token. And in this tutorial, I will be teaching you the fundamentals of writing arrow functions. The arrow functions are easy to write, require less typing, and more intuitive scoping due to “this” binding. Syntax of…
How to remove duplicates from an array of integers in C++?
The following piece of code traverses the list of integers, removes duplicate numbers, if any, and returns the remaining list. #include <iostream> #include <vector> #include <algorithm> void removeDuplicates(std::vector<int> &list) { auto end = list.end(); for (auto i = list.begin(); i != end; ++i) { end = std::remove(i + 1, end, *i); } list.erase(end, list.end()); }…
What is an Algorithm in coding?
Computer programs, no matter how big or small, are aimed to solve some kind of problems. As your intuition would suggest, a problem is a scenario that needs to be addressed or a task to be completed. In the Computer Science world, you can think of it in terms of input and output. A problem…
A brief Introduction to Object-oriented programming in PHP
In this tutorial, you will learn the basic concepts of object-oriented programming that can be leveraged to write real-time modular apps. There are a bunch of benefits of using an object-oriented approach over the traditional procedural way of writing code, but the most significant advantages are secure data, reusability, and easy debugging. In a procedural…
How to parse JSON data with JavaScript
JSON stands for JavaScript Object Notation. JSON is a human-readable format of data transmitted between a server and a browser. JSON data is stored in key/value pair in a file saved with .json extension. Even though the syntax of JSON looks similar to JS, it doesn’t need JS or any other language. JSON data exist…