如何在 boolean 中使用方法的结果？ （在 Java 中）

Question

I'm trying to understand how I can use the result of my method calculateBMI() in a boolean.

Here's my method with the return value that I need

public int calculateBMI(){
        return (100*100*weight)/(length*length);
    } 

Here's what I've tried so far but I'm a big noob to Java and I know it is wrong, can someone elaborate on how I can use the return value of the calculateBMI() in a boolean for a return value? Sorry if this is very beginner Java.

public boolean hasOverweight(){
    if (calculcateBMI() >= 30) {
        return true;
    } else {
        return false;
    }

EDIT: Solved, thanks guys: Appreciated :)

Answer 1

What you have is perfectly fine. You get a int and compare it to a known value. A slightly shorter statement would be

    public boolean hasOverweight(){
        return (calculcateBMI() >= 30);
    }

Both are equivalent, and have no real performance difference.

Answer 2

I´m not sure if i undernstood your question, but you can do this:

public boolean hasOverweight(){
   return calculcateBMI() >= 30
}

Just with that validation return true o false