Write a full program with class name Calculator to solve a calculator problem that prompts the user for $2($double$)$ numbers and an operator $($char$)$ and outputs the result.

Sample run:

Enter the first number: $10$

Enter the second number: $5$

Choose the operation $(+,-,*,/)$: $*$

The result is: $50$

Enter the first number: $10$

Enter the second number: $0$

Choose the operation $(+,-,*,/)$: $/$

Cannot divide by zero.

Enter the first number: $10$

Enter the second number: $0$

Choose the operation $(+,-,*,/)$: $^$

Invalid operation selected.