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A basic, self-contained WebSockets demo where messages generated by Javalin (Java) are sent to a web page containing a DataTable

A minimal guide to setting up a minimal web application in Eclipse, using Maven as the dependency manager (as opposed to using an Eclipse Dynamic Web Project).

It’s possible to access a wide array of data about your RabbitMQ installation using the RabbitMQ management API - a REST API which returns JSON responses. Some of the data can be a bit unintuitive without an explanation, and the documentation was initially a bit hard to find… Here are some notes…

A small demo app showing some features of Spring Boot for handling a Thymeleaf template, a JSON request, using Spring JdbcTemplate, with some Java records, lambdas and streams. The demo uses a server-side DataTable for the demo. Not intended for production use.

A very basic Maven-based set-up for a Jakarta EE 9 web app (servlet) running on Tomcat 10, using NetBeans 13.

Two different configurations for my SSL certificate: one for Tomcat and another for embedded Jetty.

Because I can never remember what the abbreviations mean.

A simple-looking piece of code which results in something other than a list of Integer values being stored in a List<Integer> object.

Some notes to self about inaccuracies in floating point values.

I recently needed to convert text files created by one application into a completely different format, to be processed by a different application. The source files did not have line terminators. In some cases, the files were too large to be read into memory (without causing resource problems). A small Python script to the rescue - during which I learned about callables and sentinels.