Which Of These Packages Contains Abstract Keyword

Bs implementation of m2.

Which of these packages contains abstract keyword. Which keyword can protect a class in a package from accessibility by the classes outside the package. Thus it must be possible to create a reference to an abstract class so that it can be used to point to a. When a class is declared abstract then its methods may also. Used to declare a special type of class that only contains abstract or default methods constant static final.

Abstract class cannot be directly initiated with new operator since abstract class does not contain any definition of implementation it is not possible to create an abstract object. Packages are declared with the package keyword. I private ii protected iii final a i only b ii only c iii only d none of the above. This is a concrete method.

Example of declaring a abstract class. Class a is an abstract class it contains a abstract function display the full implementation of display method is given in its subclass b both the display functions are the same. A package is a collection of a classes b interfaces c editing tools d classes and interfaces. Which of these packages contains abstract keyword.

A package defines a namespace in which classes are stored b a package can contain other package within it c java uses file system directories to store packages d a package can be renamed without renaming the directory in which the classes are stored view answer. Although abstract classes cannot be used to instantiate objects they can be used to create object references because javas approach to run time polymorphism is implemented through the use of super class references. Dont use any keyword at all make it default private protected final. Which of these keywords is used to define interfaces in java options a.

Which of the following is an incorrect statement about packages. A subclass of an abstract class can also be abstract if it does not define all the abstract methods in the parent class. Prototype of display is defined in class a and its implementation is given in class b. Java package is a group of similar classes and interfaces.

Of these 51 keywords 49 are in use and 2 are not in use. Computer engineering electronics. Which of these packages contains abstract keyword. Which keyword can protect a class in a package from accessibility by the classes outside the package.

Declare a abstract class abstract calendarsystem string name. Aptitude data interpretation verbal reasoning non verbal reasoning verbal ability programming general knowledge puzzle.