October 2025
Intermediate to advanced
360 pages
10h 23m
English
Content preview from Troubleshooting Java, Second Edition
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Part 2 Deep diagnosing an app’s execution
In the first part of this book, we focused on problems that can be caught by reading the code, stepping through it with a debugger, or checking well-written tests. But some problems only reveal themselves when the application is running under real conditions.
This part is about tracking down problems in execution—specifically, those tied to CPU usage and multithreading behavior. These are the kinds of problems that cause slow responses, uneven performance, or sudden bottlenecks even when the code looks fine. You won’t find them just by reading source files—you need profiling tools that show exactly what the CPU is busy doing and where time is being spent.
We’ll explore techniques for identifying ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.