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Java Web Weekly, Issue 128 At the very beginning of last year, I decided to track my reading habits and share the best stuff here, on Baeldung. Haven’t missed a review since. Here we go… 1. Spring and Java ===== >> Notes on Reactive Programming Part I: The Reactive Landscape… Continue Reading java-web-weekly-128
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Abstract Factory Pattern in Java 1. Overview In this article, we’ll discuss the Abstract Factory design pattern. The book Design Patterns: Elements of Reusable Object-Oriented Software states that an Abstract Factory “provides an interface for creating families of related or dependent objects without specifying their concrete classes”. In other words, this model… Continue Reading java-abstract-factory-pattern
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Java – Convert File to InputStream 1. Overview In this quick tutorial, we’re going to show how to convert a File to an InputStream – first using plain Java and then Guava and the Apache Commons IO library. This article is part of the “Java – Back to Basic” series… Continue Reading convert-file-to-input-stream
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Shuffling Collections In Java 1. Overview In this quick article, we’ll see how we can shuffle a collection in Java. Java has a built-in method for shuffling List objects — we’ll utilize it for other collections as well. 2. Shuffling a List We’ll use the method [.pl-smi]#java.util.Collections.shuffle[.blob-code-inner][.pl-smi], which ###takes as… Continue Reading java-shuffle-collection
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Jackson Annotation Examples 1. Overview In this article, we’ll do a deep dive into Jackson Annotations. We’ll see how to use the existing annotations, how to create custom ones and finally – how to disable them. Further reading: More Jackson Annotations This article covers some lesser-known JSON processing annotations provided… Continue Reading jackson-annotations
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Interface Driven Controllers in Spring 1. Introduction In this tutorial, we consider a new feature of Spring MVC that allows us to specify the web requests using usual Java interfaces. 2. Overview Usually, when defining a controller in Spring MVC, we decorate its methods with various annotations that specify the… Continue Reading spring-interface-driven-controllers
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Java Annotation Processing and Creating a Builder 1. Introduction This article is an intro to Java source-level annotation processing and provides examples of using this technique for generating additional source files during compilation. 2. Applications of Annotation Processing The source-level annotation processing first appeared in Java 5. It is a… Continue Reading java-annotation-processing-builder
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Run an Ant Task with Maven 1. Introduction Maven and Ant are both well-known build automation tools for Java. Although most of the time we’ll only use one of these, there are cases when using the two together makes sense. A common use case is when working on a legacy project… Continue Reading maven-ant-task
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Spring Null-Safety Annotations 1. Overview Starting with Spring 5, we now have access to an interesting feature helping us write safer code. This feature is called null-safety, a group of annotations working like a safeguard that watches out for potential null references. Rather than letting us get away with unsafe… Continue Reading spring-null-safety-annotations
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If-Else Statement in Java 1. Overview In this tutorial, we’ll learn how to use the if-else statement in Java. The if-else statement is the most basic of all control structures, and it’s likely also the most common decision-making statement in programming. It allows us to execute a certain code section only… Continue Reading java-if-else
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