1Z0-829: Java SE 17 DeveloperDemo

Question

Given:

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Which two method calls execute?

Choose two

A new MyC().m2();
B IFace.m4();
C IFace myClassObj = new MyC();myClassObj.m3();
D IFace myClassObj = new MyC();myClassObj.m4();
E IFace.m3();
F IFace.m2();

Explanation

A default interface method is a public instance method with an implementation, so MyC inherits m2 and it can be called on a MyC object. A static interface method is invoked using its declaring interface name, so IFace.m3() is valid. Private interface methods are accessible only within their declaring interface, and static interface methods are not inherited by implementing classes or available through an instance reference. Java Language Specification, Chapter 9: Interfaces

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Java Language Specification, Chapter 9: Interfaces

1Z0-829: Java SE 17 DeveloperDemo

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Notes

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