What are Wireless Devices? In this post, we will learn about wireless devices and some common examples of Wireless devices. Wireless device A wireless device is a device that can communicate with other devices without cables. Some examples of the wireless devices are: Mobile Phones Laptops Wireless Keyboards Wireless Mouse Wireless Headsets, etc. Bluetooth Devices […]
Java Static Block A static block in Java is executed when the class loads and before the main method is executed. Let’s see the functioning of the static block in the below java program and understand the importance of the static block in Java. We can use this block as an initialization block in the […]
Code Listing Let’s write a simple java program that displays the current date and time on the console window. package com.testingdocs.datetime; //DateDemo.java //www.TestingDocs.com import java.util.GregorianCalendar; import java.util.Calendar; public class DateDemo { public static void main(String args[]) { GregorianCalendar date = new GregorianCalendar(); int currentDay = date.get(Calendar.DAY_OF_MONTH); int currentMonth = date.get(Calendar.MONTH); int currentYear = date.get(Calendar.YEAR); int […]
Problem Description In this post, we will write a sample java program to add two matrices. We would prompt the matrix dimensions and the matrix elements from the user. We will calculate the matrix sum as a third matrix and display the output in the console window. At the end of the post, we will […]
Difference between Use Case and Test Case? In this tutorial, let’s understand the difference between a Use case and a test case. In software development and testing, both use cases and test cases are important tools used to describe and validate how a system behaves. Testcases are written with an intent to test the system […]
How to overload a Constructor in Java In this tutorial, we will learn to overload constructor methods in Java with an example. We would take the Dog class as an example. We will create two constructors for the class. The default no-arg constructor and an overloaded constructor that accepts the object arguments in the parameters. […]