Igor Kulakov on foojay.io - Friends of OpenJDK

Review of Junie, a coding agent by JetBrains – Revie

Wed, 26 Feb 2025 01:38:47 +0000

Other languages: Español 한국어 Português 中文

Recently, I talked about Duplicate Finder on the Foojay Podcast hosted by Frank Delporte . We briefly touched upon implementing support for other formats, and Frank asked if I’m planning on adding AsciiDoc, as it could be useful for his technical writing at Azul.

We agreed to think about adding the support soon. At the same time I got access to Junie , a newly announced coding agent by JetBrains, which is currently in early access. After a while, a thought came to me that this is a great opportunity to try it in action.

Foojay Podcast #66: Let's Talk About Java Code!

Tue, 11 Feb 2025 08:24:06 +0000

In this Foojay podcast, we dive into a few articles that were published recently and focus on code.

Igor Kulakov of JetBrains gives us his insights into the tool he created to find duplicate content in documentation.

Rijo Sam explains how you can generate real random values and how he created a train departure display.

Maxillian Arruda explains in a very detailed post the different ways to construct a complex Java object.

And we start with Wim De Troye about the code changes he had to do in a project that got upgraded from Spring Boot 2 to 3.

Video

Podcast Apps

You can listen and subscribe to the Foojay Podcast on:

Duplicate finder – Tests

Wed, 18 Dec 2024 16:00:44 +0000

Other languages: Español 한국어 Português 中文

This post is about the development of the duplicate finder tool. For downloads and instructions on how to use it, see the Download page

It’s been a while since I published the intro to the duplicate finder project , so it looks like high time to provide some progress on that.

Before starting to write the program code, it makes sense to lay down the requirements first. A good way to do this is by writing tests. Not only will the tests help us develop faster, but they will also ensure that the code adheres to the specification.

Profile IntelliJ IDEA with its own profiler

Wed, 16 Oct 2024 15:49:38 +0000

Other languages: Español 한국어 Português 中文

Just like my previous post , this one is going to be slightly meta. Obviously, you can use IntelliJ IDEA to profile another process , but did you know IntelliJ IDEA can profile itself?

This might be useful if you are writing an IntelliJ IDEA plugin and need to address issues related to your plugin’s performance.

Also, regardless of whether you are a plugin author, the described case might be interesting to you because the profiling strategy that I’ll cover is not exclusive to IntelliJ IDEA – you can use it to troubleshoot similar bottlenecks in other types of projects and using other tools.

Allocation Profiling in Java

Fri, 09 Aug 2024 08:44:59 +0000

Read in other languages : 中文 Español Português

We often find ourselves in situations when code is not working properly, and we have no idea where to even begin investigating.

Can’t we just stare at the code until the solution eventually comes to us? Sure, but this method probably won’t work without deep knowledge of the project and a lot of mental effort. A smarter approach would be to use the tools you have at hand. They can point you in the right direction.

A Beginner's Guide to IntelliJ Profiler

Thu, 04 Jul 2024 06:26:35 +0000

Read in other languages: 中文 Español Português

Sometimes your app works, but you want to increase performance by boosting its throughput or reducing latency. Other times, you just want to know how code behaves at runtime, determine where the hot spots are, or figure out how a framework operates under the hood.

This is a perfect use case for profilers. They offer a bird’s eye view of arbitrarily large execution chunks, which helps you see problems at scale.

Hack a Java application with the debugger

Thu, 13 Jun 2024 04:58:03 +0000

Read in other languages: 中文 Español Português

Back in the day, computer games were different. Not only have graphics and mechanics evolved since, but there’s also one characteristic that doesn’t seem very common in games today: nearly all of them had cheat codes.

Cheat codes were sequences of keys that would give you something extraordinary, such as infinite ammo or the ability to walk through walls. The most common and powerful of them was ‘god mode’ – it made you invincible.

Learn how to debug unresponsive Java/JVM applications, then reload the fix on the fly, using a hands-on example

Thu, 23 May 2024 07:14:31 +0000

Read in other languages: 中文 Español Português

There are a lot of debugger tutorials out there that teach you how to set line breakpoints, log values, or evaluate expressions. While this knowledge alone gives you a lot of tools for debugging your application, real-world scenarios may be somewhat trickier and require a more advanced approach.

In this article, we will learn how to locate code that causes a UI freeze without much prior knowledge of the project and fix faulty code on the fly.

Duplicate Finder for Documentation

Wed, 08 May 2024 22:08:04 +0000

Other languages: Español 한국어 Português 中文
This post is about the development of the duplicate finder tool. For downloads and instructions on how to use it, see the ‘Download’ page Download

Anyone who worked on technical documentation in a big team is certainly aware of the content duplication issue. Even with the best tools and practices at hand, duplication is fundamentally difficult to overcome.

Debug Without Breakpoints – Guide to IntelliJ IDEA's Pause

Mon, 22 Apr 2024 06:59:28 +0000

Read in other languages: 中文 Español Português

In a typical debugging scenario, you would set breakpoints to tell the debugger when to suspend your program. A breakpoint usually corresponds to the moment that marks the starting point of the further investigation.

However, in some situations you aren’t certain about where to set a breakpoint. Other times, you might prefer to suspend the program at a particular time rather than aiming at a specific line.

Localize applications with AI

Wed, 20 Mar 2024 08:50:29 +0000

Read in other languages: 中文 Español Português

Ever wondered if AI can localize an entire project? In this article, we follow the process end-to-end using the Spring Petclinic as an example. We prepare the project for localization, automate the translation using Python and DeepL, and analyze the results

Whether you are thinking of localizing your project or just learning how to do that, AI might help you. It offers a cost-efficient entry point for experiments and automations.