Data Types, Operators and Operations

Task

Implement a console-based calculator that supports:

• Integer numbers (please, take into account possible overflows)
• Basic arithmetic operations (+, -, *, /. Use integer division so that 5 / 2 = 2)
• Parethesis for prioritizing certain expressions (2 * (3 + 5) = 16)
• Exponentiation (3 ^ 3 = 27)

Important! Do not use any third-party libraries. Your calculator must be implemented using Java only.

Format

1. User starts the application
2. net.dmytrobashynskiy.Calculator app prints the help message with supported operators
3. User enters the expression (e.g. 7 * ( 8 / (2 + 2) ))
4. net.dmytrobashynskiy.Calculator prints the answer (14)

Possible user inputs are:

• 4 - ( 9 + 2 )
• ( 4 - 3 * (7 / 3))
• (((9)))

Invalid user inputs are:

• 0 - 0 (/ 3
• 4 + 4)
• ((3), etc.

Error Handling

• If user entered the wrong output (which is possible), calculator should print the Wrong expression: <Reason> message, where <Reason> is the explanation (for example, division by zero)