Claudio
De Sio Cesari

Java Architect, Trainer, Books Author, Blogger

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About me

I am a Senior Java Architect, Bestselling Author and Training Specialist.

Since 1999 I have been working as a freelance IT consultant. Over the years I have collaborated with various universities, ministerial authorities and dozens of companies of all sizes, working as a mentor, trainer, analyst, designer, architect, project manager and developer.

I am the author of several technical articles and highly successful books in Italian in the “Manuale di Java” series from version 6 to 9, all published by Hoepli. In 2019, I published my first English book “Java for Aliens“, via the Amazon platform. Again for Hoepli, in 2020 I published my latest book “Il nuovo Java“, a complete and updated guide to version 15.

Since 2018, in addition to writing books and on my blog, I have decided to dedicate myself (almost) exclusively to training and mentoring, both as an Oracle Trainer and as a freelancer.
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Recent posts from my Blog

Pattern matching for switch
18 May 2022 Going Beyond Java 8 | Java

Pattern matching for switch

According to some surveys such as that of JetBrains, version 8 of Java is currently the most used by developers all over the world, despite being a 2014 release. What you are reading is the one in a series of articles titled “Going beyond Java 8”, inspired by the contents of my books “Java for […]

Where To Use the Underscore in Java
27 December 2021 Java

Where To Use the Underscore in Java

What you are reading is one in a series of articles titled “Stranger things in Java”, inspired by the contents of my book “Java for Aliens”. These articles are dedicated to insights of the Java language. Deepening the topics we use every day, will allow us to master the Java coding even in the strangest […]

Sealed Types and Inheritance Constraints
10 November 2021 Going Beyond Java 8

Sealed Types and Inheritance Constraints

According to some surveys such as that of JetBrains, version 8 of Java is currently the most used by developers all over the world, despite being a 2014 release. What you are reading is one in a series of articles titled “Going beyond Java 8”, inspired by the contents of my book “Java for Aliens”. […]

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