Mastering Java: The Ultimate 2026 All-In-One Quiz to Excel in 'Thinking in Java

When you implement an interface, all methods are implicitly public if they are not declared as anything else. This means that they can be accessed by any other class in the program. Additionally, all variables defined in an interface are automatically public, final, and static, meaning that they cannot be changed and can be accessed globally. Option B and C are both incorrect because private and protected keywords are not allowed in an interface. Option D is incorrect because the variables in an interface are not implicitly static, they are explicitly static.