100 Java Mistakes and How to Avoid Them

Inside you will learn how to: Whenever you make a mistake writing Java, it’s almost guaranteed that someone else has made it before! In 100 Java Mistakes and How To Avoid Them you’ll learn about the common and the not-so-common antipatterns, errors, and tricky bits that trip up almost every Java developer. Discover the bugs that are hiding in your Java code, and explore useful and effective ways to dodge them—from unit tests and defensive coding to static analysis tools like IntelliJ IDEA, SonarLint, and Error Prone. Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications. Minor bugs you might not notice when writing code can quickly spin out of control in production, costing you time and money to fix. The solution is clear: spot the mistakes before you make them! This one-of-a-kind guide makes it just that easy. It shines a spotlight on the errors most often made by Java developers, so you can consistently deliver exceptional Java code. shows you how to improve your Java code by identifying and dodging common programming problems. Inside, you’ll find one hundred errors, from missteps that trip up beginners to mistakes even Java experts don’t know they’re making. Each mistake is accompanied by concrete troubleshooting advice, as well as ways of using modern static analysis tools like IntelliJ IDEA and SonarLint to identify and fix the problem. You’ll quickly see why static analysis can be so helpful for writing your code, and even learn how to write your own useful plugins! For Java developers of all skill levels. is a technical lead in JetBrains GmbH, where he works in the Java team and gives Java language support in IntelliJ IDEA. Tagir designed and developed many code inspections for IntelliJ IDEA built-in static analyzer. He is a Java Champion, and holds a PhD in computer science.