[hardwired]

If a number has a decimal it is a double. To make such a number a float you can do

Code:

float f = (float)3.14;  // cast
// or
float c = 3.14f;  // or 3.14F

And any number of lesser precision can be assigned to a reference of higher precision.

Code:

float f = 25;
double d = 15f;
long b = 88;  // int

To see what java says:

Code:

class FloatTest {
    public static void main(String[] args) {
        check(-343);
        check(3.14);
        check(0x12345);
        check(42e7);
        check(2001.0D);
        check(2.81F);
    }

    private static void check(Number n) {
        System.out.println(n + " = " + n.getClass().getName());
    }
}