Define a class BinaryNumber that represents binary numbers and a few simple operations on

them, as indicated below.

The following operations should be supported:

$$ A constructor BinaryNumber$($int length$)$ for creating a binary number of length length and

consisting only of zeros.

$$ A constructor BinaryNumber$($String str$)$ for creating a binary number given a string. For

example, given the string $"1011",$ the corresponding binary number should be created.

For this exercise you will have to use some standard String operations.

An operation int getLength$()$ for determining the length of a binary number.

$$ An operation int getDigit$($int index$)$ for obtaining a digit of a binary number given an index.

The starting index is $0.$ If the index is out of bounds, then a message should be printed

on the screen indicating this fact.

$$ An operation int toDecimal$()$ for transforming a binary number to its decimal notation $($cf$.$

the example given above$).$

$$ An operation void shiftR$($int amount$)$ for shifting all digits in a binary number any number of

places to the right, as indicated by a parameter amountToShift. The new digit should be $0.$ For example, the result of shifting $10113$ places to the right should yield $0001011$