Java – Naming Conventions

Element	Convention	Example
Class / Interface	PascalCase	UserService, PaymentProcessor
Method	camelCase	getUserById(), processPayment()
Variable	camelCase	userName, totalAmount
Constant	UPPER_SNAKE_CASE	MAX_RETRY_COUNT
Package	lowercase.dotted	com.cygnus.service.user
Enum	PascalCase (values: UPPER)	PaymentStatus.PENDING

Rules

• Names must be descriptive — avoid x, tmp, data
• Boolean variables should read as questions: isActive, hasPermission
• Avoid abbreviations unless universally known (url, id, dto)