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Identifiers In Hibernate

Introduction: Identifiers in Hibernate model the primary key attribute of an entity. It helps us to uniquely identify a JPA entity. Every entity must define an identifier. Also, it can be either simple or composite. We can define a Hibernate identifier in several ways. In this tutorial, we’ll learn how to do so. Simple (Single-Valued) Identifier: If we have a ...

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Angular Http Client Module Example

Welcome readers, in this tutorial, we will learn about the Http Client Module to interact with the restful endpoints. 1. Introduction In 2K17, Angular 6 framework introduced the Http Client Module to fetch the data from the restful endpoints. This module, Allows developers to send HTTP requests or make API calls to the external servers Replaces the old Http Client ...

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Deployment Strategies with Kubernetes and Istio

In this post I am going to discuss various deployment strategies and how they can be implemented with K8s and Istio. Basically the implementation of all strategies is based on the ability of K8s to run multiple versions of a microservice simultaneously and on the concept that consumers can access the microservice only through some entry point. At that entry ...

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Selenium alternatives everyone is talking about – Choose wisely!

What is Selenium? Selenium is a suite of web browser automation tools to automate browsers across a range of platforms. Even though it’s capable of much more, Selenium tools are used to automate web apps for testing reasons. Jason Huggins created Selenium in 2004 as an internal tool at ThoughtWorks, and for the past several decades, selenium has been a ...

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How to create a QR Code SVG using Zxing and JFreeSVG in Java?

In this article, we will look at how to use the Zxing QR code generation library and JFreeSVG library to create a QR Code SVG image in Java. QR Code Generation The below code creates a java.awt.image.BufferedImage object representing QR Code using Zxing library: 1 public static BufferedImage getQRCode(String targetUrl, int width,     int height) {     try {         Hashtable<EncodeHintType, Object> hintMap ...

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Am I delivering value?

There comes a time in everyone’s career when the question, “Am I delivering value?” becomes persistent in one’s mind. I have asked this of myself many times and I’m sure most others have. Within in the context of Software Delivery the question is prevalent. My feeling is that we should ask this question regularly and take responsibility to answer with ...

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Locating Elements by TagName In Selenium

Selenium locators are your key when dealing with locating elements on a web page. From the list of locators like ID, Name, Class, Tagname, XPath, CSS selector etc, one can choose any of these as per needs and locate the web element on a web page. Since ID’s, name, XPath or CSS selectors are more frequently used as compared to ...

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How to Use Nutch From Java, Not From the Command Line

Apache Nutch is an open source framework written in Java. Its purpose is to help us crawl a set of websites (or the entire Internet), fetch the content, and prepare it for indexing by, say, Solr. A pretty useful framework if you ask me, however it is designed to be used onlymostly from the command line. You download the archive, ...

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