Guide to Java 8 Concurrency API using Executors

April 5, 2018August 13, 2018Java, ScalaAPI, concurrency, executors, java, Java 8

Working with the Thread class in Java can be very tedious and error-prone. Due to this reason, Concurrency API was introduced back in 2004 with the release of Java 5 and then enhanced with every new Java release.The API is located in package java.util.concurrent. It contains a set of classes that make it easier to develop concurrent (multithreaded) applications in Java. The executor services are one of the most Continue Reading

Future vs. CompletableFuture in Java- #2

March 30, 2018June 7, 2018Future, JavaCompletableFuture, Java 8, Java8

In our previous blog – Future vs. CompletableFuture – #1, we compared Java 5’s Future with Java 8’s CompletableFuture on the basis of two categories i.e. manual completion and attaching a callable method. Now, we will be comparing them on the basis of next 3 categories i.e. Combining 2 CompletableFutures together Combining multiple CompletableFutures together Exception Handling Let’s have a look at each one of Continue Reading

Future vs. CompletableFuture in Java – #1

January 20, 2018April 4, 2018Future, JavaCompletableFuture, Java 8, Java8

This is Part 1 of Future vs. CompletableFuture. In this blog we will be comparing Java 5’s Future with Java 8’s CompletableFuture on the basis of two categories i.e. manual completion and attaching a callable method. What is CompletableFuture? CompletableFuture is used for asynchronous programming in Java. Asynchronous programming is a means of writing non-blocking code by running a task on a separate thread than Continue Reading

Rules while working with stream in Java 8

December 12, 2017December 13, 2017Java, StreamingExamples, interference, Java 8, Lambda Expressions in Java, Parallel Processing, parallel streams, side effects, stateful lambda expressions, Streams

First, let’s have a basic understanding of stream. Then we will have a look at the side effects that can occur while working with streams. Stream represents a sequence of objects from a source, which supports aggregate operations. One thing to be notified while working with streams is that, aggregate operation (intermediate operations) are lazy evaluated i.e. they do not start processing the contents of Continue Reading

Unit Testing vs. Component Testing in Lagom

November 6, 2017May 29, 2018ScalaComponent Testing, java, Java 8, lagom, Lagom Architecture, Unit Testing, unmanaged service

Let’s first understand the basic difference between unit testing and component testing and then we will have a look at a practical application of unmanaged service in lagom with its test cases. Difference between Unit Testing and Component Testing Unit Testing involves testing of individual units(classes) to demonstrate that the program executes as per the specification and it validates the design and technical quality of Continue Reading

Lagom and Immutability

August 27, 2017August 28, 2017Architecture, Java, Microservices, Scalaimmutability, Java 8, lagom, Microservices

What is Lagom? Lagom is not in disguise anymore. Everyone who’s following on micro-service architecture knows about Lagom framework. Lagom is an open source framework built with the shifting from monoliths to micro-services-driven application architecture in mind. It abstracts the complexity of building, running and monitoring micro-services driven applications. The Lagom framework includes Java and Scala APIs to simplify development of microservices. Lagom helps us Continue Reading

Like Java 7 ? Then You Are Going to Love Java 8 !!

July 15, 2017Functional Programming, JavaFunctional Programming, java, java 7, Java 8, jdk, lambdas, Streams

JAVA 8 (aka jdk 1.8) is a major release of JAVA programming language development. With the Java 8 release, Java provided support for functional programming, new JavaScript engine, new APIs for date time manipulation, new streaming API, etc. which will be discussed in detail. In this blog, we will focus on What’s New in Java 8 and it’s usage in a simple and intuitive way.We Continue Reading

Introduction to Java 8

May 16, 2016Java, ScalaFunctional Programming, Java 8, Lambda Expressions in Java, Streams

The Functional Features of Java8 Java 8 was a major release in terms of language and APIs. The language includes several ideas from functional programming like behavior parameterization, passing lambda expression as methods, processing data with stream pipelines etc. The following presentation describes the functional programming add on in Java 8. We will be introducing the lambda expression, Functional Interfaces, Default methods and Stream API in Java Continue Reading

Java 8