0 The visual composition highlights key elements of class diagrams and Java source code, portraying the technical nature of the book while maintaining a clean and modern look. The blue, white, and grey color palette not only represents technological themes but also ensures readability and a professional appearance. The bold sans-serif font for the title ensures it stands out and attracts attention, while the modern serif font for the author's name adds a professional touch. The layout is carefully designed to guide the reader's eye from the title to the class diagram, then to the author's name, ensuring easy navigation and visual balance. The high-gloss laminated paper not only enhances visual appeal but also provides necessary durability for frequent handling by readers.