OCP Exam Advanced Class Design Quiz

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Which keyword is used to create an inner class that can be accessed without instantiating the outer class?

final

abstract

enum

static (correct)

What is the purpose of the @Override annotation in Java?

To indicate that a method is final and cannot be overridden

To mark a method as requiring implementation in a subclass

To specify the type of an enum

To override a superclass method (correct)

In Java, how is polymorphism achieved?

Through method overloading

By creating final classes

Through method overriding (correct)

By using the 'new' keyword

What does the 'final' keyword signify when used on a class in Java?

The class cannot be extended Signup and view all the answers

When implementing an interface in Java, what keyword must be used to indicate that a method is being overridden from the interface?

@Override Signup and view all the answers

In the given scenario, which method can access the variable cat.hasFur?

main method in BigCat class Signup and view all the answers

Which of the following classes will compile the line with cat.id?

BigCat and Lynx Signup and view all the answers

Which class can access the variable cat.hasPaws?

BigCat Signup and view all the answers

Which method has access to the variable cat.name?

main method in BigCat class Signup and view all the answers

Which combination of classes will compile the line with cat.hasFur?

BigCat and Lynx Signup and view all the answers

OCP Exam Advanced Class Design Quiz

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Questions and Answers

Which keyword is used to create an inner class that can be accessed without instantiating the outer class?

What is the purpose of the @Override annotation in Java?

In Java, how is polymorphism achieved?

What does the 'final' keyword signify when used on a class in Java?

When implementing an interface in Java, what keyword must be used to indicate that a method is being overridden from the interface?

In the given scenario, which method can access the variable cat.hasFur?

Which of the following classes will compile the line with cat.id?

Which class can access the variable cat.hasPaws?

Which method has access to the variable cat.name?

Which combination of classes will compile the line with cat.hasFur?

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