Define a Java class hierarchy for the following account types:

Account $($Account$)$:

Data attribute: balance

Constructor to initialize all attributes.

Savings Account $($Savings$)$:

Additional data attribute: interestRate

Constructor to initialize all attributes.

A method calculateInterest$()$ to compute and return the interest earned based on the balance and interest rate.

Fixed Deposit $($FixedDeposit$)$:

Additional data attribute: tenure $($in months$)$

Constructor to initialize all attributes.

A method calculateMaturityAmount$()$ to compute and return the maturity amount based on the principal, interest rate, and tenure

Object Creation and Usage:

Create objects for each account type with different attributes.

Demonstrate method usage.

Marks Distribution:

Define the account hierarchy with additional attributes and methods: $5$ marks

Implement constructors for each account type: $5$ marks

Create objects and demonstrate method usage: $5$ marks