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 […]
Overview Let’s develop a Java program to check whether the number is a prime number or not in this tutorial. A prime number is a number that has no factors other than 1 and itself. Java Program Install and launch Java IDE. For example, Eclipse. Create a Java class PrimeNumber Add the Java code to […]
Introduction The insertion sort technique is similar to sorting playing cards in our hands. We pick a card and place it in the sort order. When we complete this process with all the cards the array will be sorted. A sample array sorting is shown in the below picture: Java Program import java.util.InputMismatchException; import […]
Overview StringTokenizer class is mostly used to break a string based upon a set of delimiter tokens. You can then call the Enumeration methods to loop through the elements. Class Diagram The set of delimiters are the characters that separate tokens. They can be specified either at creation time or on a per-token basis. […]