Memory management is Java’s strongest suit and one of the many reasons developers choose Java over other platforms and programming languages. On paper, you create objects, and Java deploys its garbage collector to allocate and free up memory. But that’s not to say Java is flawless. As a matter of fact, memory leaks happen and they happen a lot in …
Partial application and currying are two ways to transform one function into another. Many people get confused and are unable to differentiate between partial application and currying. Many people cannot even determine when and where to use each one in JavaScript. However, both work differently. In this article, we’ll explain the difference and practical usage of the two of them. …
The Java Persistence API (JPA) is used in most Java applications to interact with a relational database. One of its most popular implementations is the Hibernate ORM, because it uses object-relational mapping to abstract database interactions and makes implementing simple CRUD operations very simple. But this abstraction also has its downsides. Hibernate uses a lot of internal optimizations and hides …
Application server monitoring metrics and runtime characteristics are essential for the applications running on each server. Additionally, monitoring prevents or resolves potential issues in a timely manner. As far as Java applications go, Apache Tomcat is one of the most commonly used servers. Tomcat performance monitoring can be done with JMX beans or a monitoring tool such as MoSKito or JavaMelody. …
Imagine, you are developing Java software and suddenly you encounter an error? Where could you have possibly gone wrong? There are many types of errors that you will encounter while developing Java software, but most are avoidable. Some errors are minor lapses when writing codes but that is very much mendable. If you have an error monitoring tool such as …
In this post, we will discuss some of the primary commands, tools, and techniques that could help to monitor CPU Memory and Disk Usage in Java. The Java tools observe Java bytecode constructs and processes. Java Profilers follow all system commands and processor usage. This lets you look at call arrangement at whatever point you prefer. The conventional profiler provides …
Java profiling in Eclipse allows you to optimize your code, streamline your application, and better understand your program. When profiling your application using a line-level analysis, you can reveal the slowest line within a sluggish piece of code, helping you efficiently troubleshoot problems. There are a variety of platforms for profiling Java eclipse. Eclipse is a popular software and is …
Java memory analysis is an important process in checking the performance of a Java application. It helps Java developers ensure the stability of the application by checking the memory consumption. There are several factors to look into when doing memory analysis. But to get to the bottom of this process, it is vital to learn first how memory works. What …
Over time, Java has become a popular programming language in software development. Although Java is more popular with developers than C or C++, this programming language still has its problems. Here are seven Java development mistakes that developers can make and how you can avoid them. 1. Forgetting To Put “Break” In The Code “Forgetting the ‘break’ part can be detrimental …
As important as adding new features, app developers need to start placing more emphasis on the security aspect of the applications they design. After all, more app features mean more data residing within an app. Without proper security controls in place, that data can be vulnerable to intruders.
SOLID is one of the most popular sets of design principles in object-oriented software development. It’s a mnemonic acronym for the following five design principles: Single Responsibility Principle Open/Closed Principle Liskov Substitution Principle Interface Segregation Principle Dependency Inversion All of them are broadly used and worth knowing. But in this first post of my series about the SOLID principles, I …
Overview The addition of the Stream was one of the major features added to Java 8. This in-depth tutorial is an introduction to the many functionalities supported by streams, with a focus on simple, practical examples. To understand this material, you need to have a basic, working knowledge of Java 8 (lambda expressions, Optional, method references). Introduction First of all, …
Programming languages have made applications more efficient and easy to use, raising user experience to the next level. Let’s look at the top programming languages defining the future of code and hiring trends. 1. Python Python is widely accepted as the best programming language for beginner developers as it is simple and easy to use and deploy. It is widely used …
There are plenty of reasons why Java, being one of the older software programming languages, is still widely used. For one, the immense power one wields when using Java is enough to make it their staple. Couple that with the possibilities that using good Java frameworks bring and you could lessen the turnaround time for big projects. This post will …
Tomcat servers are widely used application servers for today’s development architectures, popular for hosting Java based applications. Below is a guide on best security practices for security your Tomcat Server environment. 1. Beware of Banner Grabbing What is banner grabbing? Banner grabbing is the process of gaining information from computer systems including services, open ports, version, etc. How banner grabbing …
Java agents are a special type of class which, by using the Java Instrumentation API, can intercept applications running on the JVM, modifying their bytecode. Java agents aren’t a new piece of technology. On the contrary, they’ve existed since Java 5. But even after all of this time, many developers still have misconceptions about this feature—and others don’t even know …
You may have heard of aspect-oriented programming, or AOP, before. Or maybe you haven’t heard about it but have come across it through a Google-search rabbit hole. You probably do use Spring, however. So you’re probably curious how to apply this AOP to your Spring application. In this article, I’ll show you what AOP is and break down its key …
Many things in programming sound like they should be easy, but are quite hard. Calculating elapsed time in Java is one of those. How hard could that be? As it turns out, it can be tricky. For starters, we have the fact that time itself is a tricky concept. For a quick example, remember that many places around the world …
Debugging performance issues in production can be a pain and, in some cases, impossible without the right tools. Java profiling has been around forever, but the java profilers most developers think about are only one type: standard JVM profilers. However, using one type of profiler is not enough. Suppose you’re analyzing your application’s performance. There are multiple profiling activities which …
Monitoring an application’s performance is one of the hardest challenges in software development. That’s true for virtually any programming language and platform. Java performance monitoring presents some unique challenges of its own. For instance, one of those challenges has to do with garbage collection. Java features automatic memory management, which frees the developer from having to manually dispose of obsolete …
