Don't use floating point for loop indices. If you must use floating point, use double unless you're certain that float provides enough precision and you have a compelling performance need (space or time). Example:
public class Count {
public static void main(String[] args) {
final int START = 2000000000;
int count = 0;
for (float f = START; f < START + 50; f++)
count++;
//Prints 0 because (float) START == (float) (START + 50).
System.out.println(count);
//The termination test misbehaves due to floating point granularity.
}
}