Which of the following class definitions defines a legal abstract class? Options: A . &nbspclass A { abstract void unfinished() { } } B . &nbspclass A { abstract void unfinished(); } C . &nbspabstract class A { abstract void unfinished(); } D . &nbsppublic class abstract A { abstract void unfinished(); }

Which of the following class definitions defines a legal abstract class?

Question

Which of the following class definitions defines a legal abstract class?

Options:

A . class A { abstract void unfinished() { } }

B . class A { abstract void unfinished(); }

C . abstract class A { abstract void unfinished(); }

D . public class abstract A { abstract void unfinished(); }

Answer: Option C

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Question 1. Which of the following statements regarding abstract classes are true?....

Question 2. Suppose A is an abstract class, B is a concrete subclass of A, and both A and B have a default constructor. Which of the....B b = new A(); 4. B b = new B();

Question 3. Which of the following is a correct interface?....

Question 4. Determine output of the following code. interface A { } class C { } class D extends C { } class B extends D implements A....of A"); if (b instanceof C) System.out.println("b is an instance of C"); } }

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Question 6. In Java, declaring a class abstract is useful....

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Question 8. Interface Base{ boolean m1 (); byte m2(short s); } which two code fragments will compile? 1. interface Base2 implements ....implements Base { protected boolean m1(){ return (5 > 7) }}

Question 9. Which two of the following are legal declarations for abstract classes and interfaces? 1. final abstract class Test {} 2....{} 5. protected interface Test {} 6. abstract public class Test {}

Question 10. What will happen after compiling this program code? abstract class MyClass{ //line 1 private int a, b; public void call(....static void main(String args[]){ MyClass m = new MyClass(); //line 2 m.call(12,25); } }

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