Package & Interfaces

Which option is correct for creating a package named s3cs ?

• create package s3cs;

• package s3cs;

• define package 3cs;

• s3cs;

Which is true about package?

• packages can appear in a hierarchy.

• package help to control the visibility of the program.

• package helps to group related classes and interfaces.

• All of the above

To use a class or a package from the library which keyword is used

• include

• package

• import

• export

A class member can be accessed only by a class in the same package. Which is the suitable access specifier?

• public

• default

• private

• protected

A class member cannot be accessed by any other class inside or outside the package. Which is the suitable access specifier?

• private

• public

• default

• protected

Which of the following help to access all the classes in the package p1?

• import p1;

• import p1.*;

• import p1.all;

• import p1.A;

Which of the following help to use class Sample from package adm? (choose all appropriate options)

• import admSample;

• import adm.Sample;

• import Sample;

• import adm.*;

Multiple inheritance in Java can be achieved using

• class and interface

• class

• interface

• package

Which of the following is false?

• Any number of classes can implement an interface.

• Any number of interfaces can implement a class.

• An interface can extend another interface.

• A claas can extend another class

Which of the following is true about interface?

• Interface can contain abstract methods.

• A class implementing an interface should define all the methods in that interface.

• Interface is not used for creating objects.

• All of the above