Tag: general knowledge

4th Dec

4th Nov

14th Jan

12th July

Aircraft carrier

Submarine

Frigate

Destroyer

Aircraft carrier

Submarine

Destroyer

Frigate

Amphibious Warfare Ship

Torpedo Recovery Vessel

Nuclear Submarine

Research Vessel

no compilation error;but no output will be displayed

inner=3 outer=1

inner=2 outer=1

compile error

True

False

Germany

Soviet Union

India

Russia

The subclass and the superclass has an "is-a" relationship.

Inheritance cannot change the behaviors of the existing class

The original class is the parent class or the base class or the superclass.

The new class is called a child class or a subclass or a derived class of the parent.

In a subclass you can add new methods and new fields as well as override existing methods in the parent class to change their behaviors.

True

False

drop table order;

drop order;

drop order table;

drop "order";