I have some simple java code to call a method with a value to calculate the volume. I just get error like missing ; in JCreator? What is wrong? This is new beginners non object programming level course. Therefore i guess there should be no public static in the method?
public class Matematik {
public static void main(String[] args) {
System.out.println(volym(10));
double volym(int tal){
return round((4 * math.pi * math.pow(tal,3) / 3),2);
}
}
}
The declaration for volym should not be in main:
public class Matematik {
public static double volym(int tal){
return round((4 * math.pi * math.pow(tal,3) / 3),2);
}
public static void main(String[] args) {
System.out.println(volym(10));
}
}
Edit: it's worth noting that you have other issues too. Namely, java.lang.Math.PI (note the casing) and Math.pow. And Math.round....
static. Rather create a new object of type Matematik in public static void main(... and call its volym method there.
You can't define a method inside a method. This would be more obvious if you use the IDEs code formatting. Move one of the } up to before the second method (BTW it must be static as well)
Also its Math not math and Math.round on take one value which it rounds to an integer.
If you want to round to two decimal places you can do
Math.round(x * 100) / 100.0;
Math.Round but you could make one if you wanted. There is a Math.round but it takes only one argument. There is no point inventing methods unless you are writing them. ;)