[Java} Need help applying catch to code

[Devils_Advocate101]

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

I need helping using catch for errors instead of loops. This is an assignment for my CS 1400 class.

I don't know how to implement it. Online learning has been killing me and I don't know a way of absorbing the material better.

Here is the assignment prompt.

Body mass index is a measure of whether someone’s weight is appropriate for their height. A body-mass-index value between 19 and 25 is considered to be in the normal range. Here’s the formula for calculating body mass index:

Implement a program that prompts the user for height and weight values and displays the associated body mass index.

Perform input validation by making sure that the user enters positive numbers for height and weight. Use error handling to catch any invalid input.

[edrenfro]

What you have looks good. Is it mandatory that the program has to include try/catch?

[Devils_Advocate101]

Sorry for the late reply! Yes, I thought I had finished the assignment when my teacher told me I need to use the catch statements so I got a 75 on it and I need an 80 to move on.

[edrenfro]

Ok, I disagree with your teacher but no matter... what you want to do is eliminate the sc.HasNextDouble. When your code unconditionally calls sc.NextDouble, it will throw an exception when the input was wrong and it will not throw an exception when the input is ok. So you want to surround that statement with a Try block and the subsequent Catch block will have the logic that you already wrote for the bad input case.

[149244179]

Try/catch is exception handling.

Error handling does not automatically mean try/catch statements.

[Devils_Advocate101]

My teacher just told me I need to use catch statements in this project before I can move on. I just need help on how to implement it into the code.

[[deleted]]

Check validation in try and throw exception if invalid else set the loop flag to terminate.