justanotherjavaguy 
If you are new to Angular and have somehow stumbled upon this blog…kudos🎉 your search ends here. Let’s learn Angular from scratch… Soooo… what is Angular again??? Angular is a Javascript framework that allows you to create reactive Single-Page-Applications(SPAs). Note: you need to install Angular CLI to create applications on the Angular framework and to … Read more
JDBC (Java DataBase Connectivity) defines interfaces and classes for database connections. The java.sql package contains classes and interfaces of the JDBC interface. But why do we need DataBase connectivity in our applications? Suppose you need to create an application to manage the billing of a shop. Your application runs fine throughout the day, but at … Read more
In the journey of being a full-stack developer, one needs to learn how to create beautiful and responsive websites. In order to achieve this, we need to understand the basics of HTML, and eventually, once you master HTML, we will move on to some advanced stuff such as CSS, JavaScript, React, etc. But do you … Read more
In the previous blog, we learned about the basics of database. Today let’s explore this a bit more into the topic. So our topic of discussion today will be transactions. So…what are transactions?? Simply put, a transaction is a logical unit of processing in the Database Management System.In order to successfully execute, a transaction must … Read more
In the journey of being a full-stack developer, it is crucial to understand at least the basics of database management. So… what’s a database again?? Simply put, it is a place where you store all related information from many sources in an organized structure. OK…then what is Database Management System(DBMS)?? It is simply a software … Read more
In the previous blog, we understood what exceptions mean. But how do we stop exceptions from crashing our application?? In this blog, we will find the answer to this question. try-catch-finally Let us see try-catch-finally in action. Note: Although finally block contains important clean-up code(like closing a database connection), it is optional. There can be … Read more
An exception is an abnormal path of execution of code that the developer must handle. Ok…then what is an error? An error is an unexpected situation outside the control of the code that the developer should not try to handle.An error may be caused due to environmental factors, hardware/virtual machine failures, etc. None of these … Read more
Encapsulation is the hiding of data and code from outside interference.The data and code can only be accessed/modified by the class in which it is defined. This is achieved by declaring the variables as private and getters/setters as public. Note: private and public are access specifiers about which we will talk a little later. The … Read more
Polymorphism is a feature in OOP by which an entity can exhibit itself in multiple forms. In Java, polymorphism can be achieved in the following ways Now let’s understand what each of these means. Run-time Polymorphism Run-time polymorphism is resolved by JVM(Java Virtual Machine) during execution and hence the name run-time polymorphism. Run-time polymorphism is … Read more
Abstraction is the process of hiding the implementation details of a class or method and showing only the functionality to the user. Note: Although we cannot create objects for abstract classes, we can extend abstract classes using a non abstract class and create objects for the non abstract class. So…what are the ways to achieve … Read more