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The Baeldung Weekly Review 6 Another week, another good set of articles. There have been a lot of articles this week, and in the interest of keeping the weekly review short as well as actually valuable, I had to make some touch choices. On Java ===== ⇒ Java 8 Friday… Continue Reading 2014-week-review-6
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A Guide to LinkedHashMap in Java 1. Overview In this article, we are going to explore the internal implementation of LinkedHashMap class. LinkedHashMap is a common implementation of Map interface. This particular implementation is a subclass of HashMap and therefore shares the core building blocks of the HashMap implementation. As… Continue Reading java-linked-hashmap
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Entity To DTO Conversion for a Spring REST API 1. Overview In this tutorial, we’ll handle the conversions that need to happen between the internal entities of a Spring application and the external DTOs (Data Transfer Objects) that are published back to the client. Further reading: A Guide to Mapping… Continue Reading entity-to-and-from-dto-for-a-java-spring-application
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String Comparison in Kotlin 1. Overview In this tutorial, we’ll discuss different ways of comparing Strings in Kotlin. 2. Comparison Operators Let’s start with the “==” operator. This operator can be used to check if the strings are structurally equal. It’s the equivalent of using the equals method in Java: val first… Continue Reading kotlin-string-comparison
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A Guide to Flyway Callbacks 1. Introduction The Flyway library allows us to version databases by tracking changes stored as SQL source code. Each set of changes is referred to as a migration. Individual migrations are applied to a database sequentially using a set of commands which include migrate, clean,… Continue Reading flyway-callbacks
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JPA Attribute Converters 1. Introduction In this quick article, we’ll cover the usage of the Attribute Converters available in JPA 2.1 – which, simply put, allow us to map JDBC types to Java classes. We’ll use Hibernate 5 as our JPA implementation here. 2. Creating a Converter We’re going to… Continue Reading jpa-attribute-converters
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Java Weekly, Issue 190 Here we go… 1. Spring and Java ===== >> Java Still Number One, But What’s Taking Over? #[[.t-bg-white .l-pa2 .l-d-i]#infoq.com] Surprising no one, Java is still number one, but interest in the language is making room for languages such as Kotlin or Clojure, which are seeing… Continue Reading java-weekly-190
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How to Replace Many if Statements in Java ** 1. Overview Decision constructs are a vital part of any programming language. But we land up in coding a huge number of nested if statements which make our code more complex and difficult to maintain. In this tutorial, we’ll walk through… Continue Reading java-replace-if-statements
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Java Web Weekly, Issue 118 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 ===== >> Var and val in Java? [joda.org] An interesting opinion… Continue Reading java-web-weekly-118
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@Lookup Annotation in Spring 1. Introduction In this quick tutorial, we’ll take a look at Spring’s method-level dependency injection support, via the @Lookup annotation. 2. Why @Lookup? A method annotated with @Lookup tells Spring to return an instance of the method’s return type when we invoke it. Essentially, Spring will… Continue Reading spring-lookup
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