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How to Convert HTML to PNG in Java

Actualités, Méthodes et organisation des process IT

Since its conception in the late 1980s, HyperText Markup Language (HTML) has persisted as a critical element in displaying web pages online. This ubiquitous programming language continues to offer a detailed framework for structuring the content we see and interact with on the web, allowing us to format text and multimedia components in plain-text code, which is simple enough to change when the need arises.

The Transformation of HTML

As is the case with nearly all programming languages, HTML has transformed to incorporate dozens of new features over the decades since its introduction, accommodating typical contemporary pressures such as community feedback/critique and the rapid growth of adjacent web development technologies. The results of this transformation are easily visible to us in the output of modern HTML code; for example, the most recent HTML iteration–HTML5, introduced in 2014–offers new, simple elements for embedding video and audio files, as well as much-needed improvements in mobile display and overall mobile functionality.

Source de l’article sur DZONE

21 décembre 2022/par Service comm.

Jenkins Pipeline Script to Build and Deploy Application on Web Server

Actualités, Méthodes et organisation des process IT

In this article, we will discuss the automation of application deployment on a web server using Jenkins Pipeline. We will use Jenkins Pipeline as a script. Jenkins Pipeline as script can be of two types: declarative type and scripted type. Here, we will use declarative Jenkins Pipeline script.

Prerequisite Knowledge

Git, GitHub
Building Java applications using Maven
Jenkins
Web server like Tomcat, JBoss, etc.

If you are new to Jenkins Pipeline script, then we would recommend you to go through this article first.

Source de l’article sur DZONE

11 décembre 2022/par Service comm.

Java’s New Threat Model

Actualités, Méthodes et organisation des process IT

Over the last decade of cloud migration, the threat model against Java applications and the way that we need to defend them has shifted. OpenJDK has made one positive change in this area already by deprecating the old SecurityManager, a relic that protected a bygone era of AOL CDs and paper maps. The next positive change in security is to strengthen the supply chain of software components, know what’s running and what’s vulnerable, and communicate this information with non-technical experts whose data is at risk.

Part of this threat model is driven by vulnerable libraries like last year’s Log4j. Although Log4j is a great logging library and was active on patching, many teams scrambled to identify where they needed to apply those patches. For individual Java developers or teams that knew their code and could deploy, the patch was simple — you updated a library and that was it. The reality though is that software moves fast and far, often leaving the locus of control of these technical experts to stakeholders that don’t have the expertise to manage a problem at this level. In a scramble, teams that did not know Java-specifics looked everywhere including .NET software and Python forums. The government of Quebec shut services down until they knew where Log4j wasn’t. This scrambling was not effective and does not protect our data.

Source de l’article sur DZONE

5 novembre 2022/par Service comm.

Are We There Yet? When Do We Move to GraalVM?

Actualités, Méthodes et organisation des process IT

This is the perfect time to raise this point — just as Spring Native is coming to the forefront. Is it time to move to GraalVM? Spoiler: it depends. Yes, if you’re building serverless, probably no if you’re building pretty much anything else — with a few exceptions for some microservices.

Before I begin, I want to qualify that I’m talking about native image (SubstrateVM) which is what most people mean when they say GraalVM. That specific feature took over a much larger and more ambitious project that includes some amazing capabilities such as polyglot programming. GraalVM native images let us compile our Java projects to native code. It performs analysis and removes unnecessary stuff, it can reduce the size and startup time of a binary significantly. I’ve seen 10-20x improvement to startup time, that’s a lot. Ram usage is also much lower sometimes by a similar scale but usually not as significant.

Source de l’article sur DZONE

31 octobre 2022/par Service comm.

Easily Find & Kill MongoDB Operations from MongoLab’s UI

Actualités, Méthodes et organisation des process IT

A few months ago, we wrote a blog post on finding and terminating long-running operations in MongoDB. To help make it even easier for MongoLab users* to quickly identify the cause behind database unresponsiveness, we’ve integrated the currentOp() and killOp() methods into our management portal.

* currentOp and killOp functionality is not available on our free Sandbox databases because they run on multi-tenanted mongod processes.

Source de l’article sur DZONE

11 octobre 2022/par Service comm.

Improve Your Application’s Serialization Through Efficient Object Marshaling

Actualités, Méthodes et organisation des process IT

Efficient code doesn’t just run faster; if it’s using less compute-resource, it may also be cheaper to run. In particular, distributed cloud applications can benefit from fast, lightweight serialization.

OpenSource Java Serializer

Chronicle-Wire is an OpenSource Java serializer that can read and write to different message formats such as JSON, YAML, and raw binary data. This serializer can find a middle ground between compacting data formatting (storing more data in the same space) versus compressing data (reducing the amount of storage required). Instead, data is stored in as few bytes as possible without causing performance degradation. This is done through marshaling an object.

Source de l’article sur DZONE

30 septembre 2022/par Service comm.

Java and Low Latency

Actualités, Méthodes et organisation des process IT

I have lost count of the number of times I have been told that Java is not a suitable language in which to develop applications where performance is a major consideration. My first response is usually to ask for clarification on what is actually meant by “performance” as two of the most common measures – throughput and latency, sometimes conflict with each other, and approaches to optimise for one may have a detrimental effect on the other.

Techniques exist for developing Java applications that match, or even exceed, the performance requirements of applications that have been built using languages more traditionally used for this purpose. However, even this may not be enough to get the best performance from a latency perspective. Java applications still have to rely on the Operating System to provide access to the underlying hardware. Typically latency-sensitive (often called “Real Time”) applications operate best when there is almost direct access to the underlying hardware, and the same applies to Java. In this article, we will introduce some approaches that can be taken when we want to have our applications utilise system resources most effectively.

Source de l’article sur DZONE

27 septembre 2022/par Service comm.

Java String Intern: Performance Impact

Actualités, Méthodes et organisation des process IT

java.lang.String#intern() is an interesting function in Java. When used in the right place, it has the potential to reduce the overall memory consumption of your application by eliminating duplicate strings in your application. To learn how the intern() function works, you may refer to this blog. In this post let’s discuss the performance impact of using java.lang.String#intern() function in your application.

Intern() Function Demo

To study the performance behaviour of the intern() method, we created these two simple programs:

Source de l’article sur DZONE

19 septembre 2022/par Service comm.

How To Build a Command-Line Text Editor With Java (Part 1)

Actualités, Méthodes et organisation des process IT

Have you ever wanted to know how text editors work, or how shell scripts change terminal text colors, update lines without scrolling, or move the cursor around? Surprise, surprise: even as Java devs, we can do this!

In this series, I’ll walk you through building a terminal-based text editor with Java.

Source de l’article sur DZONE

9 septembre 2022/par Service comm.