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what is the implicit declaration of interface methods in Java 8?

I was reading my old SCJP 6 book(author Kathy Sierra,Bert Bates) mentioned

  • All the interface methods are implicitly public and abstract by default
  • interface methods must not be static

For example, if we declare

interface Car
{
    void bounce();               //no need of public abstract
    void setBounceFactor(int b); //no need of public abstract
}  

What the compiler sees

interface Car
{
    public abstract void bounce();
    public abstract void setBounceFactor(int b);
}   

But from Java 8, interfaces can now define static methods. see this article everything-about-java-8
My question, what is the implicit declaration of interface methods in Java 8? Only public or nothing?

like image 560
Aniket Kulkarni Avatar asked Jan 21 '26 01:01

Aniket Kulkarni


1 Answers

The rules for implicit modifiers do not change. Implicit modifiers are used when no other modifiers are specified. abstract is implied when neither static nor default has been specified. And all methods are always public whether implicit or explicit. Note that interface fields were always implicitly public static. This doesn’t change too.

But for the final words we should wait for the completion of Java 8.

like image 106
Holger Avatar answered Jan 22 '26 16:01

Holger