Class

QnA || How to use Constructors in Abstract class?

As we know that an abstract class can have constructors, data members, and non-abstract methods as well. This chapter will shows, how we can declare and use the Constructors in the abstract class. Important Features of Abstract Class and Methods Abstract Class An abstract class would be declared using the ‘abstract’ keyword. The creation of …

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Parameterized Constructors v/s Setter and Getter function in JAVA.

In my opinion, there is only a syntax difference between parameterized constructors and setter function in JAVA. Both would be used to initialize the class variables with user-defined values. In parameterized constructors, all the class variables can be initialized within one function (constructor) which is automatically invoked when a user creates an object of that …

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Use of ArrayList Class in Java. (Collection-2)

ArrayList Class implements List Interface. In the last chapter, we have read about all the classes and their features as well as limitations. Now, we will understand all these concepts at the code level. Class: ArrayList Interface: List Package: java.util Key points of ArrayList Stores objects as a list of elements and Any number of elements can …

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Basic Java – 15 || Runtime User Input using Scanner Class (Part-1).

Scanner Class is the commonly used way of taking user inputs. There are many instances where user interaction is needed at runtime during the Program execution. Scanner Class It can be used via java.util.Scanner library files. There is a major role of Whitespace and Enter while taking user inputs using Scanner class. These user inputs …

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Basic Java – 6 || Understanding of Constructor and Destructor in JAVA.

            The basic meaning of Constructor is making or building something and Destructor means destroying or releasing something. So, technically, Constructor allocates memory to the variables for specific instance which have been created at any point in time. On the other hand, Destructor deallocates memory or releases the memory after …

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            Ashok Kumar is working in an IT Company as a QA Consultant. He has started his career as a Test Trainee in manual testing in August 2010. Then he moves towards the automation testing after 4 years. He started learning JAVA and Selenium by self to get the knowledge of automation.

       While learning these tools and working on multiple projects, he found that sometimes people get stuck in live scenarios in their project and they have to do lots of RnD to get out of it. So he decided to start blogging only for such scenarios, where anyone facing any problem in their project, can ask any question or give a solution or you can say an alternate solution to achieve the goal successfully.

Later on, he observed that some people want to learn Java but they have few questions in their mind like how to start Java, whether we should go for the online or offline course. So he started writing tutorials on Java, Jira, Selenium, Excel etc.