Category Archives: java
Spring framework exposes a nice feature to schedule some task: @Scheduled annotation. But these features make very difficult unit test process – all scheduled tasks start to work in any unit test where Spring scanning is used. It means
This is a short reminder about Observable types in RxJava. Observable is the simplest Observable which can emit more than one value. Flowable is a Observable which can emit huge numbers of values which can’t be consumed by the Observer. Single … Continue reading
Each time, when I return to development with Vertx, I have to decide what package to use: io.vertx.rxjava or io.vertx.reactivex? This is a reason, why I created this post. io.vertx.rxjava package uses RxJava 1. io.vertx.reactivex package uses current RX extension – RxJava 2. Package … Continue reading
Functional error handling in Scala alvin February 13, 2017 – 11:08am Here are a few nice blog posts on functional error-handling in Scala: – Easing into functional error handling in Scala – How do I error handle thee? – Designing … Continue reading
Java 8 has rich possibilities to process the collections. One of them is stream. The main goal of stream, as I see it, is changing of programming paradigm: from “how to do” to “what to do”. Focusing
Java 8 suggests nice ways to create maps from stream. You can see some code examples on GitHub: https://github.com/ysden123/ys-pjava/blob/master/basics/src/main/java/com/stulsoft/pjava/basics/stream/CollectExamples.java
Java 8 gives flexible ways to perform asynchronous tasks. One of a such ways is usage of CompletableFuture.
Simple example shows how to pass a function to a method. The function doesn’t have argument and doesn’t return a result.