What Are the Naming Conventions for Java Interfaces, Abstract Classes, and Enums?

What are the standard naming conventions for Java interfaces, abstract classes, and enums?

In Java, adhering to naming conventions for interfaces, abstract classes, and enums not only makes your code more readable but also maintains consistency across projects. Below is an overview of the standard practices in Java programming:

// Example of Java naming conventions
public interface IShape {
    void draw();
}

public abstract class AbstractShape {
    abstract void resize(int factor);
}

public enum DaysOfWeek {
    MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY, SUNDAY;
}

Causes

• Lack of consistency can lead to code confusion.
• Improper naming can hinder collaboration among developers.

Solutions

• Interfaces should be named using descriptive adjectives and start with an uppercase letter with 'I' prefix (e.g., `IExample`).
• Abstract classes should have descriptive names that signify abstraction, often with 'Abstract' as a suffix (e.g., `AbstractShape`).
• Enums should be named in uppercase letters with words separated by underscores to enhance readability (e.g., `DAYS_OF_WEEK`).

Mistake: Failing to use uppercase letters for enum names.

Solution: Always use uppercase letters for enum names to maintain clarity and readability.

Mistake: Naming interfaces as nouns instead of adjectives.

Solution: Use descriptive adjectives starting with 'I' for interfaces, which helps convey their purpose clearly.