29 posts tagged with "Java"

What is defensive copy? What defensive copy?

So, Java is dead. Again. For the 4996th time this year, apparently.

If I got one dollar every time I heard that phrase, I would be richer than Elon Musk in a matter of months. Seriously, I could probably buy Twitter myself and rename it back to something sensible.

There's a "mantra" that gets chanted in developer circles like it's some sort of sacred incantation:

The synchronized keyword hurts performance.

You've probably repeated this wisdom during countless interviews, nodding sagely while the interviewer checks their mental scoreboard. But here's a wild thought:

Have you ever actually questioned why?

Look, I'm just going to say it: Java is always pass-by-value. No exception. Period. End of story.

Or how I learned from my silly mistakes when creating myself a common Maven dependency.

The quickest, cleanest, and easiest way to handle exceptions for requests in Spring Boot like a professional programmer in enterprises (or at least look like one).

Remember when you first learned JDBC? Yeah, neither do I. I've blocked it out like a traumatic childhood memory. Then JPA arrived like a hero we deserved. Or did we?

Stream Gatherers are basically custom superpowers for your Stream API (they return another Stream and mostly just chill until a terminal operation shows up to actually do the work, basically intermediate operations). This JEP is like giving the Stream API steroids: now you can bend streams to your will in ways that would make previous Java developers weep tears of pure joy.

This tutorial shows how to use P6Spy to inspect generated SQL statements when debugging a Spring Boot application. Because let's face it, squinting at TRACE logs is about as fun as a root canal.

You probably won't need to sort your list of objects with custom comparison very often. But when you do... well, buckle up boys, because we're going on a wild ride!