Writing High-Quality Code: Java

This book is a guide to Java coding best practices, titled Writing High-Quality Code: 151 Suggestions for Improving Java Programs. Organized into five major sections—syntax conventions, program design and architecture, tools and frameworks, coding style, and programming philosophy—it comprises 12 chapters presented as 151 recommendations, each dissecting common pitfalls Java developers encounter in their daily work. Chapters 1–3 offer 51 recommendations on Java syntax itself, covering constants and variables, type consistency in ternary operators, varargs overloading, increment traps, serialization and UID, assertion usage, the boundary between primitive and wrapper types, monetary calculations, overriding equals/hashCode, anonymous class constructors, garbage collection, and other foundational topics. Chapters 4–9 focus on practical scenarios involving the JDK API, including string concatenation and the choice of commonly used methods, optimized use of collections and enums, prevention of NullPointerException, multiple bounds in generics, multithreading, and deadlock prevention. Chapters 10–12 extend to program performance tuning, the trade-offs of open-source tools and frameworks, and coding style and programming philosophy. Most recommendations follow a "contrast between correct and incorrect examples" approach: first presenting a flawed or poor practice and analyzing its root cause, then offering a field-tested solution, and finally clarifying applicable scenarios and caveats. The examples are typical and closely tied to real-world development. The book can be read sequentially by topic or used as a desk reference to consult whenever writing a line of code or taking over a project.