I was stuck solving this weird exception while working on a Spring Boot and Hibernate application. I verified all the configuration settings, double-checked the API calls and still, I was clueless as to what was actually causing the problem. The only conclusion that I had – The error occurs when there is a null value being sent a placeholder to the query.
Continue readingDark mode support in website
I am a Windows 10 user and one of the main feature that I like about it is – Dark Mode. Not just because its soothing on the eyes, but it makes the UI look so simple and elegant. In fact, majority of the applications I use, have dark mode/theme enabled. Be it IntelliJ Idea’s Darcula theme or Visual Studio code. This led me to explore whether there is built-in support for Dark mode in websites and to my surprise there is one.
Continue readingUsing Apache POI to create Excel File – Part I
Systems of any scale are holding data in one form or the other (Database, files, images, videos etc). With more and more data being churned out every day, there is also a need to be able to export data from the Applications. The exported data should be made available in the format that users can easily view with bunch of other tools. Excel is one of those dominating tool that people love for its multipurpose application. In this article, we will learn how to leverage Apache POI to generate Excel sheet with various customization options.
Continue readingHTML 5 details and summary component animation
Up until now, to collapse and expand certain information, we had to rely on JavaScript or use CSS pseudo selectors. With HTML 5, we have a new kid on the block – details and summary. Put all the content inside details that you wish to hide initially and add a hint for it using summary tag. Open the page in chrome browser you will see a nice little triangle to expand/collapse the information.
Continue readingCool Scrolling Cards with HTML 5 and CSS
I read a lot on web. Be it articles, source code, tips-n-tricks and what not. In fact, if I like a site, I also jump through the HTML source code and try to figure out how a particular effect has been achieved. Css-tricks.com is one of those sites, which I often visit. The site has tons of information on various aspects of CSS / Design. Apart from the articles, the site is beautifully designed and one thing which particularly caught my attention is the list of articles on front page.
Continue readingSliding dialog with Angular 8
Angular material comes with rich set of components. Slider, toggle, dialog, card etc. are set of components required for common usage in web development. While each of these components are feature rich, it is also possible to extend their features. In this article, we are going to extend Portal component to create our very own sliding dialog.
Continue readingBuild Angular custom validation function
Angular comes with pre-built set of validation functions which are suitable for most of the common scenarios. Whether its checking mandatory value, email address, max length etc. there are suitable functions available. But, as soon as the validation requirement becomes bit complex, the built-in functions fall short of expectation. Luckily, Angular does provide a capability to define custom validation functions and hook them easily in the components.
Continue readingHow To Choose a Quality VPN Service
It is no longer just a myth that internet service providers and government agencies can see what we’re doing online. It’s common knowledge that they access our data, including our online activities, habits, and even private details.
Continue readingRxJS Operator – From
RxJS is filled with rich set of functions – known as operators. But its easy to get lost if you are not familiar with Functional programming. With this in mind, I started creating a series of videos on RxJS. To begin with, we start with From operator.
Continue reading20 AWS VPC Questions
AWS VPC provides finer level controls to segregate your resources with tight security controls and data requirements. Quickly build your secure infrastructure with Click and configure interface. Change configuration on the fly and ensure that services like S3 can be only accessed by your instances. This quiz focuses on some of the key concepts in VPC.
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