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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?
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?
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?
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?
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?
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?
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 of the following classes will compile the line with cat.id?
Which class can access the variable cat.hasPaws?
Which class can access the variable cat.hasPaws?
Which method has access to the variable cat.name?
Which method has access to the variable cat.name?
Which combination of classes will compile the line with cat.hasFur?
Which combination of classes will compile the line with cat.hasFur?
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