Which of these statements about Java are true? A.( T / F ) Using variables for r

Question

Which of these statements about Java are true?

A.( T / F ) Using variables for real contents is an implementation of Inheritance.

B.( T / F ) An object usually interacts with other objects through method(s).

C.( T / F ) One class can create only one object.

D.( T / F ) According to the naming convention, the names of classes and objects begin with a upper case.

E.( T / F ) Every header (signature) for paragraphs (classes, constructors, and methods) must have a pair of parenthesis for parameters.

F.( T / F ) Knowing and using a method by just the signature of the method, without understanding how the method does, is an implementation of Encapsulation.

G. ( T / F ) One superclass(parent class) can have more than one of its subclasses(children classes).

H.( T / F ) Objects have their own information and features, called parameters and methods.

I.( T / F ) Every paragraph must have both { } and its signature.

J. ( T / F ) Every declaration statement must provide at least the type and name information about the variable.

Explanation / Answer

A.
   False
   Inheritance is the inheriting something from parent class

B.
   True

C.
   False

   You can create any number of objects of a class

D.
   False
   Class Name: begin with upper case
   Object name: camel case

E.
   True

F.
   True

G,
   False
   It is not allowed in java to inherit more than one class
   In java we can implement multiple interfaces

H.
   True
   Object have their states(instance variables) and methods(behaviours)
I.
   True
J.
   true

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