more and more
AWS S3 with Java 1. Introduction In this tutorial, we’ll learn how to interact with the Amazon S3 (Simple Storage Service) storage system programmatically, from Java. Remember that S3 has a very simple structure – each bucket can store any number of objects which can be accessed using either a… Continue Reading aws-s3-java
getdocs
Retry to Submit to Reddit a Post Without Enough Traction 1. Overview Posting to Reddit is a crap shoot. One post may do great and get a whole lot of attention while another, maybe better post will get no love at all. What about keeping an eye on these posts… Continue Reading reddit-retry-to-submit-inactive-post
getdocs
String Initialization in Java 1. Introduction Java String is one of the most important classes and we’ve already covered a lot of its aspects in our String-related series of tutorials. In this tutorial, we’ll focus on String initialization in Java. 2. Creation First of all, we should remember how Strings are… Continue Reading java-string-initialization
getdocs
Session Attributes in Spring MVC 1. Overview When developing web applications, we often need to refer to the same attributes in several views. For example, we may have shopping cart contents that need to be displayed on multiple pages. A good location to store those attributes is in the user’s… Continue Reading spring-mvc-session-attributes
getdocs
What is the serialVersionUID? 1. Overview Simply put, the serialVersionUID is a unique identifier for Serializable classes. This is used during the deserialization of an object, to ensure that a loaded class is compatible with the serialized object. If no matching class is found, an InvalidClassException is thrown. 2. Example… Continue Reading java-serial-version-uid
getdocs
Introduction to RxJava 1. Overview In this article, we’re going to focus on using Reactive Extensions (Rx) in Java to compose and consume sequences of data. At a glance, the API may look similar to Java 8 Streams, but in fact, it is much more flexible and fluent, making it… Continue Reading rx-java
getdocs
Spring Data JPA and Named Entity Graphs 1. Overview Simply put, Entity Graphs are another way to describe a query in JPA 2.1. We can use them to formulate better-performing queries. In this tutorial, we’re going to learn how to implement Entity Graphs with Spring Data JPA through a simple… Continue Reading spring-data-jpa-named-entity-graphs
getdocs
Jackson – Change Name of Field 1. Overview This quick tutorial illustrates how to change the name of a field to map to another JSON property on serialization. If you want to dig deeper and learn other cool things you can do with the Jackson 2 – head on over… Continue Reading jackson-name-of-property
getdocs
Integration Testing with a Local DynamoDB Instance Persistence 1. Overview If we develop an application which uses Amazon’s DynamoDB, it can be tricky to develop integration tests without having a local instance. In this tutorial, we’ll explore multiple ways of configuring, starting and stopping a local DynamoDB for our integration… Continue Reading dynamodb-local-integration-tests
getdocs
How to Test the @Scheduled Annotation 1. Introduction One of the available annotations in the Spring Framework is @Scheduled. We can use this annotation to execute tasks in a scheduled way. In this tutorial, we’ll explore how to test the @Scheduled annotation. 2. Dependencies First, let’s start creating a Spring Boot Maven-based application… Continue Reading spring-testing-scheduled-annotation
getdocs