Welcome to 2020 
1. Spring and Java
>> New Classes in Java 11 [blog.code-cop.org]
A categorized list of classes added in Java 11 as well as those that were removed.
>> Prototyping with JShell [advancedweb.hu]
The good, the bad, and the ugly of the JShell REPL for Java.
>> Memory Leaks in Java: A Cautionary Tale and Gentle Introduction to Preventing Memory Errors [blog.soshace.com]
And a good write-up on the common causes of memory leaks in Java and how to detect them.
Also worth reading:
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>> Why Java will remain a dominant language of the future [xamnation.com]
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>> Running JavaFx app with Docker containers! [aboullaite.me]
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>> Apple Open Sources ServiceTalk to the Java Community [infoq.com]
Webinars and presentations:
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>> From Idea to Dev to Ops [infoq.com]
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>> Microsoft's Jialin Dai on the various Spring for Azure Starters [spring.io]
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>> KotlinConf 2019: What's New in Java 19: The end of Kotlin? by Jake Wharton [youtube.com]
2. Technical and Musings
>> Getting Email Sending Settings Right [techblog.bozho.net]
A few DNS records and other strategies to ensure your system-generated emails aren't blocked by SPAM filters.
Also worth reading:
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>> Sustainability in Software Development [blog.scottlogic.com]
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>> Open Source Migrates With Emotional Distress [lucumr.pocoo.org]
3. Comics
And my favorite Dilberts of the week: