Inheritance in Object-Oriented Programming

Compulsory casting each element before invoking any common operation

Consistent interaction irrespective of the object's concrete class

Increased memory usage due to additional reference variables

Decreased processing speed because every call requires checking

They must be changed from public to protected for security reasons.

Access privileges are required to be more restrictive than the original.

Access privileges are always set to private when overriding methods.

They should not be more restrictive than the original.

Access privileges must increase from private to public.

The method signature must be the same as the one in the superclass.

There should be additional parameters compared to the original method.

The return type of the overridden method must be a different data type.

Yes, because the subclass has complete access to methods in the superclass, including private ones.

Only if the subclass uses a specific keyword to allow private method overriding.

No, because private methods are not accessible outside their own class. They cannot be overridden by subclasses.

Sometimes, depending on the relationship between the methods in the superclass and the subclass.

The compiler enforces that only the subclass version can be executed, ensuring new functionality remains primary.

This precludes further overrides of the method in subsequent subclasses, locking down the original implementation from the parent class.

Subclasses can still override the method if they declare it with a different return type.

Finalization is ignored by Java runtime environment resulting in no changes to existing overriding behavior.

Adding more conditional checks within the original loop.

Sequential search using a single loop.

Binary search instead of a nested loop iteration.

A recursive method calling itself with the same problem size.

The subclass method will perform significantly slower due to its quadratic time complexity.

The subclass method will have no noticeable impact on performance because overriding does not change algorithmic complexity.

The subclass method will perform faster since overriding methods is an optimization technique.

The performance effect cannot be determined without knowing the specific dataset sizes involved.

The return type can be different if it is a subtype of the original return type.

It must match the superclass method's signature exactly.

The access modifier can be more restrictive than that of the superclass method.

The parameters can vary in number as long as they are related by inheritance.

An error occurs because static methods cannot coexist with non-static ones within class hierarchies.

It does not result in overriding; instead, it hides the superclass static method due to method hiding.

The compiler automatically changes it to an instance method for successful overriding.

It successfully overrides and replaces the static method from the superclass.

It cannot be overridden

Private only

Default or package-private

Protected or public