Project Title: Simple Java Decision$-$Based Calculator

Objective:

Students will create a Java program that simulates a basic calculator, allowing the user to choose operations $($addition$,$ subtraction, multiplication, division$)$ or exit the program. The project will require students to use if$,$ if$-$else, switch, logical operators, and operator precedence to control the program flow.

Project Description:

Create a calculator that:

Takes user input to choose between operations $(+,-,*,/,$ exit$).$

Takes two numbers from the user as operands.

Executes the chosen operation using appropriate decision structures $($if$-$else or switch$).$

Continuously prompts the user to choose an operation until they choose to exit.

Includes error handling to avoid division by zero or invalid input.

Detailed Instructions:

Prompt the User for Operation:

Use a Scanner to ask the user to input a math operation $(+,-,*,/,$ or exit$).$

Use an if$-$else structure to determine the chosen operation.

If the user selects exit, the program should terminate.

Get User Input for Numbers:

Prompt the user for two numbers $($operands$).$

Store these numbers as double variables.

Perform the Calculation:

Depending on the operation selected, the program should perform:

Addition if $+$ is chosen.

Subtraction if $-$ is chosen.

Multiplication if $*$ is chosen.

Division if $/$ is chosen $($with a check to ensure the divisor is not zero$).$

Use a combination of if$-$else, &&$,||,$ and a switch statement where appropriate to make the decisions.

Display the Result:

Once the operation is performed, output the result to the user.

Ask the user if they want to perform another operation or exit.

Input Validation:

Ensure that the user doesn't input anything other than valid operations.

Add a check to ensure that division by zero does not occur.

Optional Extensions:

Use the switch statement: For selecting the mathematical operation.

Range check: Allow the user to input values within a specific range, say $-1000$ to $1000,$ and throw an error if the input goes beyond this range.

Short$-$circuit evaluation: Use && and $||$ operators to manage multiple conditions for error handling.

Sample Output:

Welcome to the Java Calculator!

Enter an operation $(+,-,*,/,$ or exit$)$: $+$

Enter the first number: $10$

Enter the second number: $5$

The result of $10+5=15$

Would you like to perform another operation $($yes$/$no$)?$ yes

Enter an operation $(+,-,*,/,$ or exit$)$: $/$

Enter the first number: $15$

Enter the second number: $0$

Error: Division by zero is not allowed.

Would you like to perform another operation $($yes$/$no$)?$ no

Thank you for using the Java Calculator! Goodbye!