Home » Java » Core Java » Top 10 Lists of Common Java Mistakes (That Makes Top 100!)

About Lukas Eder

Lukas is a Java and SQL enthusiast developer. He created the Data Geekery GmbH. He is the creator of jOOQ, a comprehensive SQL library for Java, and he is blogging mostly about these three topics: Java, SQL and jOOQ.

Top 10 Lists of Common Java Mistakes (That Makes Top 100!)

Top 10 lists are very popular, fun, and informative to read. But there are so many of them! How to choose the right one? Here’s a meta top 10 list helping you find the top 10 top 10 lists. On a more geeky note:

SELECT TOP 10 mistake FROM source1
SELECT TOP 10 mistake FROM source2
SELECT TOP 10 mistake FROM source3

In this selection, I have carefully removed all of those top 10 newbie mistake lists that pop up when performing an average Google search. Because there aren’t 10 newbie mistakes, there are about one million. I’m more interested in subtle mistakes and problems. So, join me in reading these awesome 10 lists of top 10 Java mistakes / best practices (in no particular order)

1: ZeroTurnaround’s 10 Common Pitfalls of Experienced Java Developers & Architects

ZeroTurnaround has just released this one, in time for my post. The JRebel guys usually employ quite a geeky tongue-in-cheek, which I really like, of course:

2: jOOQ’s 10 Subtle Best Practices When Coding Java

Some advertising in our own cause. We have a top 10 list as well, about very subtle things that can go wrong when writing Java:

3: AppDynamic’s Top 10 Java Performance Problems

AppDynamics is giving away this interesting and very well-written eBook for only your contact information. (Don’t blame me if they’ll call you and sell you their products after you download the nice list).

4: The AmiableAPI’s Java API Design Checklist

This isn’t exactly a top 10 list, but more of a style guide helping you to write a good, clean API. Something that isn’t so obvious to do if you don’t write APIs every day:

5: Josh Bloch’s talk about How To Design a Good API and Why it Matters

While this one isn’t labeled as top 10, it certainly contains the top 10 things to do when designing APIs, citing from a very authoritative reference: Josh Bloch himself:

6: Top 10 Mistakes When Writing Server-Side JavaScript Using Rhino

Haha, just kidding. There’s only one mistake here. It’s the fact that you’re writing JavaScript. So, on the the real #6:

6: Pierre-Hugues Charbonneau’s Top 10 Causes of Java EE Enterprise Performance Problems

This one is extremely well-written. A very good read for all Java architects out there:

7: Top 10 Interesting Statements by Adam Bien About the Java Enterprise Edition 6 (JEE 6)

I like to cite Adam Bien. He’s very dogmatic, pro JEE Java Rock Star. While I most certainly don’t agree with him in many aspects, I still enjoy reading his blog. This list is not by Adam Bien himself, but by a Kai Waehner, who has summarised Adam Bien’s opinions quite well:

8: Top 15 Worst Computer Software Blunders

OK, this one isn’t about Java in particular, neither does it show concrete best practices. But why do we need best practices and avoid common mistakes? Yes, because things can go terribly wrong. Here’s how wrong they can go:

9: Top 10 Java People You Should Know

You think this list is incomplete? Very unlikely. But you still might be interested in looking up the top 10 Java people, which have influenced our every day work like few others. They have said many things in their professional lives, which could fill many more top 10 lists. Here’s the “Top 10 Java People You Should Know” list:

10: The Top 10 List of Best Java-Related Top 10 Lists

And here’s a killer list explaining all about the origins of tail-recursion and – possibly – StackOverflowErrors:


Do you want to know how to develop your skillset to become a Java Rockstar?

Subscribe to our newsletter to start Rocking right now!

To get you started we give you our best selling eBooks for FREE!

1. JPA Mini Book

2. JVM Troubleshooting Guide

3. JUnit Tutorial for Unit Testing

4. Java Annotations Tutorial

5. Java Interview Questions

6. Spring Interview Questions

7. Android UI Design

and many more ....


Leave a Reply

Your email address will not be published. Required fields are marked *


Want to take your Java Skills to the next level?
Grab our programming books for FREE!
  • Save time by leveraging our field-tested solutions to common problems.
  • The books cover a wide range of topics, from JPA and JUnit, to JMeter and Android.
  • Each book comes as a standalone guide (with source code provided), so that you use it as reference.
Last Step ...

Where should we send the free eBooks?

Good Work!
To download the books, please verify your email address by following the instructions found on the email we just sent you.