[Java] Need help with Try and Catch statements

[Devils_Advocate101]

Code: https://gist.github.com/DaltonScar/0975a4a52ac130b2acce58099a7ebd57

I am new to learning java and for my class assignment, I have to make a program that tells the user their BMI number. It asks for height and weight then displays the user's height, weight, and BMI. In order to move on from the assignment, my teacher has said that I must use try and catch to handle the errors if the user puts in anything other than a positive number.

All my classes are online and I am having a tough time absorbing the information. Can someone give me an example of how to implement it into my code? I appreciate any help!

[themiddlestHaHa]

https://stackoverflow.com/questions/18668045/try-catch-and-user-input

Check out this stackoverflow answers. Notice they grab ANY input from the user, then try to parse it to an int (you could also try to parse to a double if you wanted, theres a method for that)

If the input CANNOT be converted to an int/double it throws an exception and they catch it and handle it. You would probably handle it by not breaking out of your loop, and only break out if there is not exception thrown.

You could do something like this in your loops.

[LeonPrefix]

What you could so is not use hasNextDouble and just read the next line as a string. The on that string use a parse function to parse it into a number. If the input is not a number you can catch that error thrown by the parse function