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Java Weekly, Issue 231 Here we go… 1. Spring and Java ===== >> From Java to Kotlin and Back [allegro.tech] A controversial but interesting read about one team’s story which migrated from Java 8 to Kotlin… and then to Java 10. >> Getting Started with Kafka in Spring Boot [e4developer.com]… Continue Reading java-weekly-231
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Creating a Custom Annotation in Java 1. Introduction Java annotations are a mechanism for adding metadata information to our source code. They are a powerful part of Java, and were added in JDK5. Annotations offer an alternative to the use of XML descriptors and marker interfaces. Although we can attach… Continue Reading java-custom-annotation
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Runnable vs. Callable in Java 1. Overview Since the early days of Java, multithreading has been a major aspect of the language. Runnable is the core interface provided for representing multi-threaded tasks and Callable is an improved version of Runnable that was added in Java 1.5. In this article, we’ll… Continue Reading java-runnable-callable
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Building a Data Pipeline with Kafka, Spark Streaming and Cassandra 1. Overview Apache Kafka is a scalable, high performance, low latency platform that allows reading and writing streams of data like a messaging system. We can start with Kafka in Java fairly easily. Spark Streaming is part of the Apache Spark platform that… Continue Reading kafka-spark-data-pipeline
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Introduction to Primefaces 1. Introduction Primefaces is an open source UI component suite for Java Server Faces (JSF) applications. In this tutorial, we’ll give an introduction to Primefaces, and demonstrate how to configure it and use some of its main features. 2. Overview ==== 2.1. Java Server Faces Java Server Faces… Continue Reading jsf-primefaces
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A Guide to NIO2 Asynchronous Socket Channel 1. Overview In this article, we will demonstrate how to build a simple server and its client using the Java 7 NIO.2 channel APIs. We’ll look at the AsynchronousServerSocketChannel and AsynchronousSocketChannel classes which are the key classes used in implementing the server and… Continue Reading java-nio2-async-socket-channel
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Removing an Element from an Array in Java 1. Overview In this quick tutorial, we will learn about the various ways in which we can remove an element from an array in Java using the Apache Commons Lang library. 2. Maven Let’s add the commons-lang3 dependency to our project’s pom.xml… Continue Reading java-array-remove-element
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Returning a JSON Response from a Servlet 1. Introduction In this quick tutorial, we’ll create a small web application and explore how to return a JSON response from a Servlet. 2. Maven For our web application, we’ll include javax.servlet-api and Gson dependencies in our pom.xml: <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>${javax.servlet.version}</version> </dependency> <dependency> <groupId>com.google.code.gson</groupId>… Continue Reading servlet-json-response
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Introduction to Joda-Time 1. Introduction Joda-Time is the most widely used date and time processing library, before the release of Java 8. Its purpose was to offer an intuitive API for processing date and time and also address the design issues that existed in the Java Date/Time API. The central concepts… Continue Reading joda-time
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Baeldung Weekly Review 37 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. Some great pieces on both Java and Spring by @JavaOOQ, @darrel_miller, @hartleybrody, @takipid and @daveburkevt: http://t.co/6UBC0LnoOr — Baeldung (@baeldung)… Continue Reading 2015-week-review-37
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