Roy Tutorials

Additional Config Here I am going to tell about additional config or configurations in your spring boot application. Now what could be the additional configurations in your spring boot application. Generally you define configurations into application.properties file under class path folder. But what if your application needs more configurations which could be supplied during runtime or the jar which is…

Specific Columns Selection Here I am going to show you an example how to select only specific columns from a table. So you only need to select few columns from a table instead of selecting all columns. In other words you are going to fetch those columns which are required for your business purpose.

Empty File Here in this example I am going to show you how to create empty files in Windows system using command line tool. This will reduce your manual efforts for creating empty files for a corresponding list of files in a directory. When there is a requirement for processing a list of files from a folder or directory and…

Search Functionality In any tabular format data it is necessary to have a search input so that user can search their intended data using particular text or string. This will help them to find the expected data in a little time than searching the whole HTML table data by navigating to different pages. This example will show you how to…

Avoid Line Break Sometimes you may need to prevent line break in the comment or remark section where an HTML input element <textarea/> is used. Generally as you type in the text area and press ENTER key to put the next part of string in the new line and it may cause some issues in other activities. For example, your…

Codeigniter 4 Frontend and Backend In this tutorial I am going to give you an idea how to build frontend and backend functionalities separately so that the future maintenance would be easier. Frontend generally accessed by the end users of the websites whereas, backend is used by mainly admin users who manage different functionalities of the website. The backend admin…

Codeigniter 4 CRUD In this tutorial I am going to show how to build CRUD (Create Read Update Delete) application using Codeigniter 4 and MySQL database using basic AJAX (Asynchronous JavaScript and XML) technique. I won’t use AJAX technique for all four operations, i.e., fetching (Read), saving (Create), updating and deleting. Out of these four operations, I will use AJAX…

Composite Primary Key Composite primary key is a combination of two or more columns in a table. So instead of a single column to be a primary key, more than one column or field is made to be a primary key to uniquely identify the rows in a given table. Let’s say you have created a table called user in your database…

JSF 2 AJAX In this tutorial I am going to show you how to use AJAX (Asynchronous JavaScript And XML) technique in JSF (Java Server Faces) based applications. AJAX is generally used for updating or refreshing a small part of the page because, you may not need to refresh the whole page. Here in this example I am going to…

Cucumber Cucumber is a BDD (behavior driven development) framework for running automated acceptance or integration test cases. Cucumber framework is written in Ruby language, but it is also available in other programming language. Cucumber uses Gherkin parser but the implementation is done using the target language. Cucumber allows the execution of feature documentation written in business-facing text. Cucumber works with…