Automation

What are Protocol Buffers? Protocol buffers a.k.a Protobufs are Google’s language-neutral, platform-neutral, extensible mechanism for serializing structured data. When you compare Protobuf with other serialization formats like XML and JSON, Protobufs are smaller, faster, and simpler. You can use Protobufs with many programming languages like Java,C#, C++, Python etc. You need to define your messages […]

Write a recursive method for the sum of n integers? Recursion is a method calling itself. Such a method is said to be a recursive method. A recursive algorithm is similar to Mathematical Induction problems. We assume that there is a solution for a base case, and we will prove the result for the general […]

Answer: Yes, we can code a Java program using a text editor like Notepad editor. The prerequisite of running the program is proper JDK installation and setting of environment variables like PATH etc. Basically, this is how we write a simple java program without the help of any IDE like ( Eclipse, IntelliJ, etc) to […]

What is a Java Servlet? Servlet is a server Java class that runs in a web container and is used to create Web applications. It is mostly used to build dynamic web pages. Web applications built using servlets are scalable and robust. Each request to servlet runs in a separate thread. See the below picture […]

Introduction An identity matrix is a square matrix of dimension n which contains ones along the principal diagonal and zeros in the rest of the other positions. A 2×2 matrix is as follows: 1    0 0    1 4×4 Identity Matrix Example For example, 4×4 matrix is shown below.   Java Program Please note that Java […]

How to create a Singleton class? Using the Singleton pattern, you should have only one object of a particular class throughout your code. The Singleton class design is to make sure that you can instantiate only one object of a particular class. You need to restrict the new operator by creating more objects than 1 […]