Baffling bugs derail releases, burn hours, and erode your confidence. Stop staring at cryptic stack traces while deadlines speed closer. Master proven debugging tactics that surface root causes in minutes. Turn log chaos into clear, actionable insights with AI assistance. Optimize performance before users complain, rather than firefight after outages. Feel confident shipping resilient Java applications, even across microservices and cloud.
- AI-driven log analysis: Spot anomalies instantly, freeing you for higher-value coding.
- IntelliJ and JConsole deep dives: Navigate complex code without getting lost in details.
- Memory and heap dump walkthroughs: Eliminate leaks that silently drain resources and cash.
- SQL query profiling: Remove hidden database bottlenecks for snappier user experiences.
- Thread and concurrency guidance: Resolve deadlocks and race conditions before they bite.
- Hands-on projects: Cement skills through realistic scenarios you can replay anytime.
Troubleshooting Java, Second Edition by instructor Laurențiu Spilcă is a field manual that blends classroom clarity with production realism.
Each chapter tackles a different investigation layer—logs, memory, threads, queries—using familiar tools plus emerging AI assistants. Clear explanations, annotated screenshots, and step-by-step labs turn theory into repeatable practice.
Finish the book able to read any Java system like an open book, isolate the root cause, and deliver permanent fixes that stick. Your evenings belong to you again.
Ideal for intermediate Java developers, SREs, and tech-lead generalists who keep critical services running.
Table of Contents:
PART 1: REVISTING THE FOUNDATION OF CODE INVESTIGATION
1 STARTING TO KNOW YOUR APPS
2 UNDERSTANDING YOUR APP'S LOGIC THROUGH DEBUGGING TECHNIQUES
3 FINDING PROBLEM ROOT CAUSES USING ADVANCED DEBUGGING TECHNIQUES
4 MAKING THE MOST OF LOGS: AUDITING AN APP'S BEHAVIOR
PART 2: DEEP DIAGNOSING AN APP'S EXECUTION
5 IDENTIFYING RESOURCE CONSUMPTION PROBLEMS USING PROFILING TECHNIQUES
6 FINDING HIDDEN ISSUES USING PROFILING TECHNIQUES
7 INVESTIGATING LOCKS IN MULTITHREADED ARCHITECTURES
8 INVESTIGATING DEADLOCKS WITH THREAD DUMPS
PART 3: DIAGNOSING MEMORY-RELATED ISSUES
9 PROFILING MEMORY-RELATED ISSUES
10 INVESTIGATING MEMORY ISSUES WITH HEAP DUMPS
11 ANALYZING POTENTIAL JVM ISSUES WITH GC LOGS
PART 4: FINDING PROBLEMS IN LARGE SYSTEMS
12 UNCOVERING SYSTEM-LEVEL FAILURES AND SERVICE COMMUNICATION ISSUES
13 MEASURING DATA CONSISTENCY AND TRANSACTIONS
APPENDICES
APPENDIX A: TOOLS YOU'LL NEED
APPENDIX B: OPENING A PROJECT
APPENDIX C: RECOMMENDED FURTHER READING
APPENDIX D: UNDERSTANDING JAVA THREADS
APPENDIX E: MEMORY MANAGEMENT IN JAVA APPS
About the Author :
Laurențiu Spilcă is a Java and Spring trainer known for turning complex topics into practical breakthroughs. With years of global classroom and conference experience, Laurențiu delivers clear, example-rich guidance on every page. He distills deep debugging and architecture expertise into tools developers can apply the very same day.
Review :
- The book offers a practical guide for developers that work on real world Java applications! The author provides several real-life scenarios and is obviously speaking from extensive experience in Java. Great book for Engineers who are looking to understand the root causes behind performance issues.
Nancy Al Kalach, Senior Salesforce Developer, Illumina
- Excellent deep dive into using profilers and other troubleshooting tools on your Java applications.
Jason Clark, Staff Engineer, GitHub
