In Java, the access modifier for interfaces is always implicitly public. This means that interfaces are accessible from any other class or package. You cannot specify a different access modifier, such as private, protected, or package-private (default), for an interface. If you try to do this, the compiler will generate an error.

Here’s a summary of important points about interfaces and their access modifiers in Java:

Default Access Modifier: When no access modifier is explicitly defined for an interface, Java assumes it to be public by default. This ensures that the interface is accessible to any class or package.
No Other Modifiers: Java does not allow the use of private, protected, or package-private access modifiers for interfaces. Trying to do so will result in a compilation error.
Interface Members: In an interface, all methods are implicitly public and abstract. Fields (constants) inside an interface are also public, static, and final by default.
Inheritance: Interfaces can extend other interfaces using the extends keyword. When one interface extends another, the extending interface must also be public.
Example of a correct interface declaration:
public interface MyInterface {
void method1();
int CONSTANT = 100; // automatically public, static, and final
}
Incorrect example:
Declaring an interface with a non-public access modifier will result in a compilation error:

// This will cause a compilation error
private interface MyInterface {
void method1();
}
In conclusion, interfaces in Java are always public by design to ensure they are accessible from any other class or package. This supports Java’s principles of abstraction and polymorphism in object-oriented programming. You can check it on my website iogamesio.

In Java, when declaring an interface, the access modifier is by default assumed to be public. This means that interfaces are accessible to all classes and packages. It is not possible to specify a different access modifier for an interface other than public geometry dash.

Here are some key points regarding interfaces and access modifiers in Java:

Default Access Modifier: If no access modifier is explicitly specified for an interface, it defaults to public. This is why all interfaces are implicitly public in Java.

Other Access Modifiers Not Allowed: Specifying private, protected, or package-private (default) access modifiers for an interface declaration is not allowed and will result in a compilation error.

Members of Interface: Inside an interface, all methods are by default public and abstract. Interface fields (constants) are implicitly public, static, and final.

Inheritance and Access: Interfaces can extend other interfaces using the extends keyword. In this case, the extended interface must also have public access.

Example of a valid interface declaration:

public interface MyInterface {
 void method1();
 int CONSTANT = 100;
}

Attempting to use a different access modifier will result in a compilation error:

// This is incorrect and will cause a compilation error
private interface MyInterface {
 void method1();
}

Therefore, interfaces in Java are designed to be public and accessible from any other class or package that imports them. This design supports the principles of abstraction and polymorphism, which are fundamental to object-oriented programming in Java.

Yes, “internal” interface is perfectly fine possible.