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JDK 12 – JEP 325 Switch Expressions

JDK 12 went GA on March 19, 2019, keeping its word on shorter release cycles and frequent releases. The features part of the release can be found here. One of the interesting features for the developers is the “JEP 325 Switch Expressions” which is available as a preview feature. A preview feature as defined here is: A preview language or ...

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HashSet In Java

Introduction: HashSet in Java implements Set interface i.e. it doesn’t allow duplicates. It is internally backed by a HashMap which works on the principle of hashing.  We can store a null value in a HashSet. Its default capacity is 16 with a load factor of 0.75, where: Load factor = Number of Stored Elements / capacity A Java HashSet is non-synchronized. Also, ...

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Viewing TLS Configuration with JDK 13

JDK 13 Early Access Build 16 is now available and one of the interesting additions it brings is the ability to have the keytool command-line tool display the current system’s TLS configuration information. This is easier than trying to find supported TLS information in separate documentation and match that information to one’s JDK vendor and version. To see the TLS ...

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Load Testing of a Microservice. Kubernetes way

Let’s assume there is a microservice represented by a composition of containers running on a K8s cluster somewhere in a cloud, e.g.Oracle Kubernetes Engine (OKE). At some point we want to quickly stress test a specific microservice component or the entire microservice. So we want to know how it works under the load, how it handles many subsequent requests coming ...

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Python String split() Example

1. Introduction Manipulating strings can be a very important aspect of programming due to the various number of ways in which strings can be manipulated. And one such way of manipulating strings is by splitting them based on several characters. You might want to split strings based on commas, semicolons and so much more. In our article for today, we ...

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Web Services Interview Questions and Answers


In this post we cover almost every portion of the concept of Web services that you need to be familiar with to answer any tier questions. You would also find the best Web Services Interview Questions and Answers in classifications so you can only get in a specific provision if necessary. Varieties of web applications developed on various programming platforms ...

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Build a Microservice Architecture with Spring Boot and Kubernetes


“I love writing authentication and authorization code.” ~ No Java Developer Ever. Tired of building the same login screens over and over? Try the Okta API for hosted authentication, authorization, and multi-factor auth. In this tutorial, you’re going to use Kubernetes to deploy a Spring Boot microservice architecture to Google Cloud, specifically the Google Kubernetes Engine (GKE). You’re also going ...

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