Option(c) i.e "A NullPointerException error " is the correct answer for the given question.
Explanation:
Exception are the run time error in the program.A NullPointerException is the runtime error when the pointer containing the NULL value .This type of exception occur when we call that function on the pointer variable which contains the NULL.
ArrayIndexOutOfBoundsException error occur when we accessing the element which is out of the index or bound so this option is incorrect.
An ArithmeticException error occur in the arithmetic operation. Suppose a number is divided by zero then the ArithmeticException error is occured .
ClassCastException error occur in the typecasting of a specific object.So this option is incorrect.
Dotted Decimal notation is a presentation of numerical data which is expressed as decimal numbers separated by full stops. Dotted decimal notation expresses each eight bit sections of 32 bit numbers as decimal value. It provides convenient notation which is easy to understand by the people who are IT experts.
