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Joined 1 year ago
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Cake day: June 11th, 2023

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  • Nah, Hibernate, Spring and most major Java frameworks have largely moved away from XML. It’s still supported, but these days it’s mostly configured in the code directly, with properties loaded from yaml, JSON or the environment (for containers).

    The JDK ecosystem is in a pretty good spot nowadays. With Spring boot you can whip up a productions ready back-end very fast, or if you prefer a more hands-on approach there are lighter frameworks/libraries quarkus or micronaut.

    The Java language itself has evolved fast and is actually pretty nice now, and if you prefer something more modern akin to TS or swift you can just use Kotlin which is almost 100% interoperable with Java.


  • Since Java 14 it looks like this:

    Exception in thread “main” java.lang.NullPointerException:

    Cannot invoke “String.toLowerCase()” because the return value of “com.baeldung.java14.npe.HelpfulNullPointerException$PersonalDetails.getEmailAddress()” is null

    at com.baeldung.java14.npe.HelpfulNullPointerException.main(HelpfulNullPointerException.java:10)







  • Because having each piece of software do it itself would be not only chaos but a massive security concern.

    Not really, the main point is that (most) apps don’t know where they are on the screen, whether they’re minimized, on the active workspace, … and they don’t care either. That’s the responsibility of the window manager.

    The app tells the display server “I need a window to display these pixels” and that’s it. And the window manager, well, manages these windows.

    On the topic of security, X11 doesn’t handle security at all, that’s one of the main issues. So any graphical app can read the other windows’ pixels, grab everything you type, everything you copy, … OTOH Wayland isolates apps so they can’t do that by default. Apps that really need to (screenshot apps, …) can use “portals” to ask for these permissions.