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: Implement it for any class with a natural ordering. 3. Classes and Interfaces

: Pass resources to the constructor instead of hardcoding them (Singleton/Static utilities). 2. Methods Common to All Objects : Implement it for any class with a natural ordering

: Favor immutable classes (like String ) to make code thread-safe and less buggy. : Implement it for any class with a natural ordering

: Always override them together. If you break this, HashMap and HashSet will fail. : Implement it for any class with a natural ordering

The book’s mantra is: If you follow these patterns, your code will be idiomatic and maintainable. To help you apply these concepts:

: Always specify types (e.g., List , not List ) to catch errors at compile time.