Lesson 24 of 25

Java Best Practices

Code Quality

Following Java best practices leads to more readable, maintainable, and robust code.

  • Follow Java naming conventions (camelCase for variables/methods, PascalCase for classes)
  • Use meaningful variable and method names
  • Keep methods short and focused on one task
  • Favor composition over inheritance
  • Use interfaces to define contracts
  • Always close resources (use try-with-resources)

Error Handling and Performance

Proper error handling and performance awareness are essential for production applications.

  • Catch specific exceptions, not generic Exception
  • Don't use exceptions for flow control
  • Use StringBuilder for string concatenation in loops
  • Prefer ArrayList over LinkedList for most use cases
  • Use final for variables that shouldn't change
  • Leverage the Streams API for collection operations