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Thread: Bad Operand for Binary Type Error (Can't figure this out)

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    Default Bad Operand for Binary Type Error (Can't figure this out)

    Here's my code, basically a small program to calculate Body Mass Index. For some reason I get the follow error below the code.

    import java.util.Scanner;
    public class BMI{

    public static void main(String[] args) {

    Scanner input = new Scanner(System.in);
    double BMI;
    double weight;
    double height1;
    double height2;


    // was using these, but not atm
    /* double overweightValue = 25;
    double underweightValue = 18.5; */


    System.out.println("What is your weight? ");
    weight = input.nextDouble();

    System.out.println("What is your height? ");
    height1 = input.nextDouble();

    height2 = (height1 * 12);

    BMI = (weight * 703) / (height2 * height2);

    if (BMI > 25){
    System.out.println("Your BMI is in the overweight range! ");
    }
    if (25 > BMI > 18.5) {
    System.out.println("Your BMI is in the optimal range! ");
    }
    if (BMI < 18.5) {
    System.out.println("Your BMI is in the underweight range! ");
    }


    }
    }


    C:\Users\jamea\Desktop\Java Programs\BMI.java:31: error: bad operand types for binary operator '>'
    if (25 > BMI > 18.5) {
    ^
    first type: boolean
    second type: double
    1 error

    Tool completed with exit code 1


    It's pretty clear that I cannot use the "<" and ">" operators in an if statement. But how else would I achieve this?

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    Default Re: Bad Operand for Binary Type Error (Can't figure this out)

    Please paste your code between code tags (see BBCodes below). Check the tutorials in my signature on how to use if/else statements for comparison.

    https://docs.oracle.com/javase/tutor...bolts/op2.html

    Regards,
    Jim
    Last edited by jim829; January 27th, 2019 at 01:27 PM. Reason: update

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