Dodge the common mistakes that even senior developers make, take full advantage of static analysis tools, and deliver robust and error-free Java code. 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. Every software developer introduces bugs to the code. There’s no way to avoid them completely. Some of the bugs cause very subtle change in program behavior and nobody cares about it. Other bugs may cost millions of dollars, lost spacecraft, or even human lives. Many of them are in the middle: they don’t have disastrous effects but they annoy users and require hours of debugging and fixing.