Naresha

Groovy Scripts - Functions and Variables

In a previous post, we explored the simplicity of scripting mode offered by Groovy. We arrived at the following code. String message = args.length > 0 ? "Hello ${args[0]}" : "Hello" println message Let's make the functionality slightly more sophisticated. Say, we want to send

Hot Loading - Still Relevant?

More than a decade ago, when I started my profession as a software developer, one of the most significant pain for developers was waiting for your application server to start so that they could verify their code changes. Hence there were efforts to make live reloading happen without restarting the

Effective Java with Groovy - Are you implementing equals and hashCode correctly?

Consider the following Groovy code. class Product { String sku String description BigDecimal price } Now let's put the Product class into use as follows. Product book1 = new Product(sku: 'P101', description: 'Effective Java', price: 599.0) Product book2 = new Product(sku: 'P101', description:

Gradle - Continuous Build

Back in 2015, Gradle introduced this feature which they called 'continuous build'. Those days, I was exploring Ratpack, and it was the first toolkit/ framework to leverage the continuous build feature. The idea here is to rerun the tasks whenever there is a code change. Gradle will first

Micronaut HTTP Client - just the response body

In a previous post, we used io.micronaut.http.client.BlockingHttpClient to get response from an HTTP endpoint. We used the exchange method as follows. HttpResponse response = client.toBlocking().exchange("/greeting", String) If you are using Java instead of Groovy, you will pass "String.class" instead

Groovy Scripts - How do they work?

If you are already familiar with Groovy, you know that Groovy supports script mode where you can write Groovy code without explicitly creating a class. This mode is suitable when you want to house the entire code in a single class. If you are new to Groovy, you might want

Effective Java with Groovy - When float and double put you in trouble!

Let's start with a Java program! What do you think the following program would print? float price = 0.1f; float amount = 0f; for (int i = 0; i < 10; i++) { amount += price; } System.out.println("Total price: " + amount); Well, the developer indeed intended the amount to

Is your first programming language holding you from learning your next language?

In one of my previous posts, I mentioned how I was using the Java syntax of lambda expressions while I was programming with Kotlin. In my observation, whenever we are working on something, if our brain finds a match to what we already know, often end up using the same

Lambda Expressions Syntax - Java vs Kotlin

Both Java and Kotlin support lambda expressions. There are similarities in their syntax, though they are precisely not the same. Many of you may be using both languages at work. When you use multiple languages, the syntax of another language may peek in. In my example, after using Groovy for

Micronaut CLI - The JVM Version

A few weeks ago, when I was checking for the versions of a tool on SDKMAN CLI, I noticed the broadcast message that a Micronaut 2 is available. If you are not familiar with SDKMAN already, you may want to take a look at my post on SDKMAN I installed