Submitted by c-admin on Wed, 05/29/2019 - 00:22
Which of these statements about interfaces are true?
Select 3 options
A. Interfaces permit multiple implementation inheritance.
B. Unlike a class, an interface can extend from multiple interfaces.
C. Members of an interface are never static.
D. Members of an interface may be static.
E. Interfaces cannot be final.
Submitted by c-admin on Wed, 05/29/2019 - 00:19
Given:
interface Worker {
void performWork();
} class FastWorker implements Worker {
public void performWork(){ }
}
You are creating a class that follows "program to an interface" principle. Which of the following line of code will you most likely be using?
Select 1 option
A. public FastWorker getWorker(){ return new Worker(); }
B. public FastWorker getWorker(){ return new FastWorker(); }
C. public Worker getWorker(){ return new FastWorker(); }
D. public Worker getWorker(){ return new Worker(); }
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