Java different situation division

Question

How to divide two numbers in Java and get to different types in two different situations:

• Get int if it is possible(for example 6 / 2)
• Otherwise, get float(6 / 4)

Code like this:

int a;
int b;
float div = a / b;

a and b are integers. (For example, I don`t want to get 2.0 if it is possible to get 2)

Answer 1

You can also just check with the modulo operator if the division is whole - numbered.

int a = 6;
int b = 4;
if(a % b == 0) {
    System.out.print(a/b);
}
else  {
    System.out.print((float)a/b);
}

If the division a % b equals 0 the division is whole numbered. If not then it's a fraction and you can cast just one of the operands(a or b) to a float to get the decimal representing the fraction result.

Output:

1.5

Answer 2

Try casting the float to an int and compare the results, if it's the same, then print the integer, otherwise, use the float:

public class Main {
    public static void main(String[] args) {
        int a = 6;
        int b = 3;
        getDivisionResult(a, b);
        b = 4;
        getDivisionResult(a, b);
    }
    private static void getDivisionResult(int a, int b) {
        float div = (float) a / b;
        int rounded = (int) div;
        if(rounded == div)
            System.out.println(rounded);
        else
            System.out.println(div);
    }
}

Output:

2
1.5