To field inject, or not to field inject in Spring?
Nearly all Spring projects that I have worked with make heavy use of field injection. This must be a popular approach because it is concise and reads well. But have you ever considered the downsides of field injection?
Java’s While and Do-While Loops in Five Minutes
A while loop is a control flow statement that runs a piece of code multiple times. It consists of a loop condition and body. Java also has a do while loop.
Java’s Ternary Operator in Three Minutes
The ternary operator is a form of syntactic sugar for if-then-else statements. It is also known as the conditional operator, which is perhaps a more meaningful name because it evaluates conditions like if does.
Java’s If Statement in Five Minutes
The if statement is the most basic conditional statement. It checks a condition, which is any boolean expression, and runs a block of code if it is true.
Unit testing classes that depend on time
Dependency inversion principle states that we should depend upon abstractions. Taking that into account, time should also be considered as a dependency.
Type-safe configuration in Spring Boot
Spring Boot provides a type-safe way to handle configuration by allowing you to create a bean and populating it with property values from your configuration file.
Externalized configuration in Spring Boot
Externalized configuration is essential if you wish to deploy the same deployable unit to different environments without modifying the source code. Spring Boot provides several easy methods of doing that.
Getting started with Dropwizard - CRUD operations
Dropwizard is a framework for building RESTful web services in Java. This tutorial shows how to create, retrieve, update, and delete resources.
5 ways to create a Stream in Java 8
Java 8 introduced the Streams API which allows developers to declaratively manipulate collections. Here are five ways to create a Stream in Java 8.