Task $3$: Demo $[25$ PTS$]$

Create a Demo class and in your main method, prompt the user to enter the temperature $($Celsius or Fahrenheit$)$ and the desired conversion $($C to F or F to C$)$:

Use a loop to allow repeated conversions until the user exits.

Read user input using Scanner.

Use a try$-$catch block to handle potential exceptions:

Inside the try block, call the appropriate conversion method $($celsiusToFahrenheit or fahrenheitToCelsius$)$ based on the user's selection.

In the catch block $($catching TemperatureBelowAbsoluteZeroException$),$ display an appropriate error message to the user and prompt them to enter a valid temperature.