Given:

interface Downloadable {
public void download();
}

interface Readable extends Downloadable {
public void readbook();
}

abstract class Book implements Readable {
public void readbook() {
System.out.println("Read Book"); // line n2
}
}

class EBook extends Book {
public void download() {
System.out.println("Read E-Book"); // line n3
}
}

And given the code fragment:

Book book1 = new EBook();
book1.readbook();

What is the result?

Question

Given:

interface Downloadable {
 public void download();
}

interface Readable extends Downloadable {
 public void readbook();
}

abstract class Book implements Readable {
 public void readbook() {
 System.out.println("Read Book"); // line n2
 }
}

class EBook extends Book {
 public void download() {
 System.out.println("Read E-Book"); // line n3
 }
}

And given the code fragment:

Book book1 = new EBook();
book1.readbook();

What is the result?

Accepted Answer

D. Compilation fails at line n3.

Answer

A. Compilation fails at line n2.

Answer

B. Read E-Book

Answer

C. Compilation fails at line n1.

Answer

E. Read Book

Given: interface Downloadable { public void download(); } interface Readable extends Downloadable { public void readbook(); } abstract class Book implements Readable { public void readbook() {…