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GIT write useful commit messages

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What's harder than choosing a variable name? IMO its composing a perfect code comment and commit message. Today we will discuss some bad...

KeyCloak docker-compose import realm file

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Example of docker-compose for keycloak 18 with ability to import a realm file: It assumes the realm-export.json file is in /PATH_OF_realm-ex...

Kafka - a working docker-compose

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Here's a working docker-compose that runs zookeeper, kafka and kafka-ui in same network. version : '3.8' services : zookeepe...

Spring Boot - shutdown and restart application programmatically

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Today we will be discussing how to shutdown and restart a Spring application programmatically. 1) New Project First let's create a simpl...

Read Request parameter String from URL in Spring/HttpServlet

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Read entire query string(request parameter) in Spring Boot/HttpServlet In Spring Boot and other Java web frameworks, we capture the request ...

GIT delete merged branches

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How to delete merged branches from local copy: When you work on a project for a while, there is a good chance that you will have a list of o...

Java view,download,filter email using javax.mail

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Java SDK doesn't come with inbuilt mail API but Java-EE (now called Jakarta EE) provides several utility library like json, servlet, web...

Java HttpClient tutorial with File Upload example

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Java 11 comes with a nice HttpClient API/Implementation so that we no longer need to rely on external libraries like Apache HttpClient execu...

Thymeleaf re-usable pagination component- Spring MVC/Bootstrap

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In this blog, we will discuss how we can create a reusable pagination component using Thymeleaf and Spring MVC/Data. Goal is to create a pag...

Thymeleaf pass parameter to fragment

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Making reusable fragment/UI Components in Thymeleaf Thymeleaf supports creation of 'function like' mechanism and pass parameters to ...