Naresha's Blog (Page 2)

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Effective Java with Groovy - Immutability

It would seem like mutability is the default design approach when it comes to Java. However, reading "Effective Java" makes you change your mind. The book suggests - 'minimise mutability'. Also, what is highly useful is the reason for favouring immutability - "immutability is simple&

Micronaut as Dependency Injection Provider

If you are already familiar with Micronaut, most probably you know it as a framework for developing microservices-based applications. Micronaut support JVM languages Groovy and Kotlin in addition to Java. One of the less known facts about Micronaut is that it can also be used as a dependency injection capability

Effective Java with Groovy - The (in)famous null

If you have seen some of the enterprise applications written in Java, you know the amount of code goes into performing null checks. The 'null reference' feature of Java for sure is the #1 contributor to employment generation. The creator of null reference has already admitted that it

Effective Java with Groovy - Enabling Order

This post shows how does Groovy make it convenient for you to implement Comparable and Comparator interfaces.

Java - end of the road for Paths

Java introduced NIO 2 APIs with version 1.7. I wrote an article several years ago, after seeing not many developers make use of the new API. With this API, you would use java.nio.file.Path instead of java.io.File to represent a file. To get an instance

Micronaut HTTP Client - Error Flow

We have seen Micronaut BlockingHttpClient in action and how to use exchange and retrieve methods to interact with an HTTP endpoint. What happens if your endpoint returns HTTP status code greater than or equal to 400 (they indicate that it's an error)? To explore this, let's

Groovy Scripts - Exploring Binding

In a previous post exploring scripting basics, we saw how binding was used to supply command-line arguments to scripts. In this post, let's explore the design of binding further. class BindingDemo { static void main(String[] args) { Binding sampleBinding = new Binding() println sampleBinding.variables sampleBinding.message = "Hello"

Don't fall in love with your code

I was mentoring this developer, and he was working on a piece of UI which involved a lot of JavaScript. The timeframe was before sing-page apps became the norm. So the team was using JQuery. Day by day, the functionality started getting more sophisticated. A part of the feature was

Effective Java with Groovy - Favour Internal Iterators

Let's start with the following code making use of the traditional for loop. List<String> languages = List.of("Java", "Groovy", "Kotlin"); // List.of() requires Java 9 or above for (int i = 0; i < languages.size(); i++) { System.out.println(

Gradle - running tests in Continuous Build

In a previous post, we saw Gradle's continuous build in action. If you use Test Driven Development at work, you will be running your tests after every code change. Let's leverage Gradle's continuous build so that you don't have to trigger the