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About Bikram Kundu

I am a Software Craftsman, with slightly more admiration towards design and architecture. Among the few and far developers with proficiency in Java & JavaScript. I am equally in love with SkillIQ and RoleIQ.

A Complete RxJS Tutorial – explanations with examples

This is a complete RxJS tutorial with details explanations, code examples and a lot of references to further sharpen your skills. In this tutorial, you will learn the core concepts of reactive programming and how to achieve them in RxJS. Learning RxJS could be hard, especially to think in a reactive programming way. But, trust me it is worth learning. [Read More]

By |2020-05-05T19:10:37+00:00May 5th, 2020|Categories: JavaScript, RxJS|Tags: , |

Getting started with Project Reactor

In this tutorial, you will learn about Project Reactor used to create efficient Reactive systems. The project reactor is often simply referred to as Reactor. It is based on the Reactive Stream Specification which is implemented by Project reactor and RxJava. 1. What is Project Reactor? Technically, the Reactor is a fourth-generation reactive library, based on the Reactive Streamsspecification, for [Read More]

By |2020-05-09T17:19:43+00:00May 5th, 2020|Categories: Java™|Tags: |

Advice ordering using @Order in Spring AOP

Introduction In this tutorial, you will learn about the multiple Advice ordering using @Order in Spring AOP. Often, more than one piece of advice is applied on a single matched Joinpoints and you want to control the order in which they are executed. Spring allows you to set the Precedence using org.springframework.core.Ordered interface or @Order annotation. Rules for advice precedence [Read More]

By |2020-05-02T13:37:05+00:00May 2nd, 2020|Categories: Spring Framework|Tags: , |

Around advice in Spring AOP – @Around

1. Introduction In this article, you will learn about the Around advice in Spring AOP that runs around a matched Joinpoint's execution. Around advice is declared using the @Around annotation. You already know about the 5 types of advice from the previous article as listed below. Before advice – @BeforeAfter returning – @AfterReturningAfter throwing – @AfterThrowingAfter (finally) advice – @AfterAround advice – @Around 2. Around advice execution - @Around Around advice is declared [Read More]

By |2020-04-28T18:20:42+00:00April 28th, 2020|Categories: Spring Framework|Tags: , |

Complete Spring AOP Tutorial

Course introduction: Spring AOP makes Aspect-Oriented Programming easier. In this tutorial, you will learn about aspect-oriented programming using Spring AOP. Aspect-oriented programming enhances the Object-Oriented Programming concept by providing a different way to structure your code. Spring AOP uses AspectJ internally, we will use Spring with AspectJ annotations in this tutorial. What is AOP? An Aspect is simply a [Read More]

By |2020-05-02T13:44:18+00:00April 28th, 2020|Categories: Spring Framework|Tags: , |

After (finally) advice in Spring AOP – @After

1. Introduction In this article, you will learn about the After advice in Spring AOP which runs after the matched Joinpoint exits its execution. After advice is declared using the @After annotation. It is also known as After finally advice as it gets invoked irrespective of successful exit or abruption due to exception. You already know about the 5 types [Read More]

By |2020-04-28T17:15:26+00:00April 28th, 2020|Categories: Spring Framework|Tags: , |

After Throwing advice in Spring AOP – @AfterThrowing

1. Introduction: After Throwing advice gets invoked after a matched method finishes/aborts its execution by throwing an Exception. You already know, the name for such a matched method is Joinpoint. You can declare an After throwing advice using the @AfterThrowing annotation. You already know about the 5 types of advice from the previous article as listed below. Before advice – @BeforeAfter [Read More]

By |2020-04-28T14:49:00+00:00April 28th, 2020|Categories: Spring Framework|Tags: , |

After returning advice in Spring AOP – @AfterReturning

1. Introduction: After returning advice gets invoked after a matched method finishes its execution and returns a value. You already know, the name for such a matched method is Joinpoint. You can declare an After returning advice using the @AfterReturning annotation. You already know about the 5 types of advice from the previous article as listed below. Before advice – @BeforeAfter [Read More]

By |2020-04-28T14:44:22+00:00April 28th, 2020|Categories: Spring Framework|Tags: , |

Combine and Reuse pointcut expressions in Spring AOP

In this tutorial, you will learn to combine and reuse multiple Pointcut expressions in Spring AOP. We have only discussed a glimpse of it in the previous article. Combining means making use of two or more expressions separated by Logical operator - &&, || and !. I have included high level sample as well as a complete example to give [Read More]

By |2020-04-28T14:38:31+00:00April 28th, 2020|Categories: Spring Framework|Tags: , |

Pointcut expressions in Spring AOP

Introduction In this article, you will learn about the Pointcut expressions used to match advice with the target Joinpoints. Spring AOP uses AspectJ pointcut expressions. In the tutorial home page, you read the Pointcut definition. Spring AOP only supports method execution join points, so you can think of a pointcut as matching the execution of methods on Spring beans. Pointcut: [Read More]

By |2020-04-28T14:29:57+00:00April 28th, 2020|Categories: Spring Framework|Tags: , |