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Thread: Can someone help me out with this

  1. #1
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    Default Can someone help me out with this

    Hey guys so I made this code for wind chill temp and Im stuck on one part.
    the part Im stuck on is that he wants a programs with dialog boxs and restriction

    "temp ranges -58 - 41 and wind speed greater than or equal to 2. He wants us to have in there that if the user types in an invalid number for both parts a box will pop up and say error.
    I have tried if and else statemnts but i get red line so can someone look over it and help me modify it please

    import javax.swing.JOptionPane;
     
    public class Temperature {
     
        public static void main(String[] args) {
     
            String Temp = JOptionPane.showInputDialog("Enter outside Temperature in Farhrenheit. Temp should be between -58F and 41F");
            double Temperature = Double.parseDouble(Temp);
     
            String Wind = JOptionPane.showInputDialog("What is the MPH of the wind ex: q.2.3.4.5.6 ect.");
            double WindSpeed = Double.parseDouble(Wind);
     
            double Chill = 35.74 + (0.6215 * Temperature) + (35.75 * (Math.pow(WindSpeed, 0.16))) + (0.4275 * (Temperature * (Math.pow(WindSpeed, 0.16))));
     
            Chill = (int) (Chill * 100 / 100.0);
     
            System.out.println("The Wind-Chill Temperature is:" + Chill);
     
        }//end of main method
     
    }
    Last edited by costello20; October 5th, 2014 at 04:32 PM.

  2. #2
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    Default Re: Can someone help me out with this

    What do you mean a redline? Where are your if / else statements for error checking? You should be able to check if windSpeed is out of range or Temperature is out of range.

  3. #3
    Super Moderator Norm's Avatar
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    Default Re: Can someone help me out with this

    Please edit your post and wrap your code with code tags:
    [code=java]
    YOUR CODE GOES HERE
    [/code]
    to get highlighting and preserve formatting.
    If you don't understand my answer, don't ignore it, ask a question.

  4. #4
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    Default Re: Can someone help me out with this

    Thanks for the info Norm

    so are you guys able to help
    I need to add in the where if the user punches in a number not in the guidelines then a box pops up saying "Error" or "invalid number"

  5. #5
    Super Moderator Norm's Avatar
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    Default Re: Can someone help me out with this

    I need to add...
    What problems are you having with that? Do you have any specific questions about what to do?
    If you don't understand my answer, don't ignore it, ask a question.

  6. #6
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    Default Re: Can someone help me out with this

    yes how do I add in a statement to or a line to where if the user inputs a temp like 85
    it will show a box that says Error or invalid number

  7. #7
    Super Moderator Norm's Avatar
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    Default Re: Can someone help me out with this

    Use an if statement to test for the bad value:
    if (bad data) {
    show a message
    }
    If you don't understand my answer, don't ignore it, ask a question.