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Class Loaders in Java 1. Introduction to Class Loaders Class loaders are responsible for loading Java classes during runtime dynamically to the JVM (Java Virtual Machine). Also, they are part of the JRE (Java Runtime Environment). Hence, the JVM doesn’t need to know about the underlying files or file systems… Continue Reading java-classloaders
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Introduction to the Null Object Pattern 1. Overview In this quick tutorial, we’ll have a look at the Null Object Pattern, a special case of the Strategy Pattern. We’ll describe its purpose and when we should actually consider using it. As usual, we’ll also provide a simple code example. 2.… Continue Reading java-null-object-pattern
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Spring Boot Configuration with Jasypt 1. Introduction Jasypt (Java Simplified Encryption) Spring Boot provides utilities for encrypting property sources in Boot applications. In this article, we’ll discuss how we can add jasypt-spring-boot‘s support and use it. For more information on using Jasypt as a framework for encryption, take a look… Continue Reading spring-boot-jasypt
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Introduction to AutoFactory 1. Introduction In this tutorial, we’ll give a brief introduction to AutoFactory, from by Google. This is a source-level code generator that helps generate factories. 2. Maven Setup Before we begin, let’s add the following dependency to the pom.xml: <dependency> <groupId>com.google.auto.factory</groupId> <artifactId>auto-factory</artifactId> <version>1.0-beta5</version> </dependency> The latest version… Continue Reading autofactory
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Converting a Kotlin File to Java 1. Overview Kotlin is well-known for its interoperability with Java. This is, of course, possible because they both are running on the Java Virtual Machine – in other words, they are compiled to the same bytecode. In this tutorial, we’ll explore two ways… Continue Reading kotlin-convert-to-java
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Introduction to Thread Pools in Java 1. Introduction This article is a look at thread pools in Java – starting with the different implementations in the standard Java library and then looking at Google’s Guava library. 2. The Thread Pool In Java, threads are mapped to system-level threads which are… Continue Reading thread-pool-java-and-guava
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Counting Matches on a Stream Filter 1. Overview In this tutorial, we’ll explore the use of the Stream.count() method. Specifically, we’ll see how we can combine the count() method with the filter() method to count the matches of a Predicate we’ve applied. 2. Using Stream.count() The count() method itself provides a… Continue Reading java-stream-filter-count
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Bubble Sort in Java 1. Introduction In this quick article, we’ll explore the Bubble Sort algorithm in detail, focusing on a Java implementation. This is one of the most straightforward sorting algorithms; the core idea is to keep swapping adjacent elements of an array if they are in an incorrect… Continue Reading java-bubble-sort
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Maven Dependency Scopes 1. Introduction Maven is one of the most popular build tools in the Java ecosystem, and one of its core features is dependency management. In this article, we’re going to describe and explore the mechanism that helps in managing transitive dependencies in Maven projects – dependency scopes.… Continue Reading maven-dependency-scopes
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Displaying Money Amounts in Words 1. Overview In this tutorial, we’ll see how we can convert a monetary amount into words-representation in Java. We’ll also see how a custom implementation could look like, via an external library – Tradukisto. 2. Implementation Let’s first start with our own implementation. The first… Continue Reading java-money-into-words
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