e correct answerWhat type of variable can be defined in an interface?Optionspublic staticpublic finalprivate finalstatic finalpublic static final

Break Down the Problem

1. Identify what variables can be defined in a Java interface.
2. Review the characteristics and limitations of these variables.

Relevant Concepts

• In Java, interfaces are used to specify methods that must be implemented by classes.
• All variables defined in an interface are inherently public, static, and final.

Analysis and Detail

1. Public: All members of an interface are public. This means the variables can be accessed from any classes that implement the interface.
2. Static: Variables in an interface belong to the interface itself rather than to instances of classes implementing the interface.
3. Final: Variables are final, meaning they cannot be reassigned after being initialized. This is typically used for constants.

Verify and Summarize

Given that variables in an interface are always public, static, and final, the only answer that encompasses all these conditions is public static final.

Final Answer

The correct answer is public static final.