PQ$03"$a$.$ Create an Abstract class called BinaryOperation, which has two operands, one operator. $($example: $4+5$ the operands: $4,5$ and operator: $+)$

b$.$ Create abstract methods $$int compute $($void$)$ and $$void printresult $($void$)$ in BinaryOperation. Also create necessary attributes, etc.

c$.$ Create $4$ classes extending this abstract class namely: AddBinaryOperation, SubBinaryOperation, MulBinaryOperation and DivBinaryOperation, which does addition, subtraction, multiplication, and division in the compute method.

d$.$ Create another class called $$BinaryEquationParser$$ which has a static method with signature $$BinaryOperation parseBinaryOpString $($String binOpString$)$

i$.$ This method parses the user input which is a string like $4+5$ and then it creates the appropriate instance $($in this case AddBinaryOperation$)$ and populates operands, operator, etc. It returns the instance.

e$.$ Create another class called $$BinaryMain$$ which only has the main method.

i$.$ Take user input like $4+5$ and print the result. In this case, the result is $9.$

ii$.$ In main method, you will make a call ONLY to the parseBinaryOpString in the BinaryEquationParser and call compute and printresult appropriately.

Note: In total, this part will have a total of $7$ classes including the abstract class

Part $-2($Do this in a new file called VariableArityMain.java by copying the code from Part $1$ and modifying the classes as necessary$)$

a$.$ The new abstract class will be called VariableArityOperation

i$.$ As the name suggest, it should support operation on more than two integers

ii$.$ Max up to $5$ integers $($Hint: you can use an array$)$

b$.$ For simplicity sake, you can assume that we will only operate on positive integers and we don$$t need to support mixed expressions $($i$.$e$.$ the variable arity operation only need to work for $4+5+2$ or $7*8*9$ and not $4+5*2)"$