OOP in Java

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1 point

The abstract modifier states that the class implementation is incomplete and cannot be instantiated.

True

False

1 point

The==operator tests two references to see if they refer to the same object.

True

False

1 point

A _______________ is a collection of fields that hold values and methods that operate on those values

1 point

How many reference types are defined by Java?

1 point

public class Integer extends Number implements Serializable, Comparable {
// class members go here
}

The above class signature is correct.

True

False

1 point

Which of the following class signatures is incorrect

public class Integer extends Number{}

public class Integer implments Number{}

public class Integer{}

public class Integer extends Number, Object{}

1 point

The final modifier states that the class implementation is incomplete and cannot be instantiated.

True

False

1 point

The ability to hide members enables the classes an object-oriented design technique known as data:

inheritance

polymorphism

encapsulation

abstraction

1 point

A class which is a kind of local class that has no name and combines the syntax for class definition with the syntax for object instantiation is known as

anonymous class

final class

inner class

abstract class

10.

1 point

In C++ we use free() to reclaim memory when an object is no more needed. In java this is done automatically and process is called____________________

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