import static java.lang.System.*;
import java.text.NumberFormat;

public class Autobox {
	public static void main(String[] args) throws java.text.ParseException {
		NumberFormat nf = NumberFormat.getInstance();
		int i=0;

		int limit = 50000000;
		if(args.length != 0) {
			limit = nf.parse(args[0]).intValue();
		}

		double start = nanoTime();
		while(i++<limit) {
			Integer I = i;
		}
		gc();
		double timeTaken = nanoTime()-start;

		out.println("Number of ints auto-boxed: " + nf.format(limit));
		out.println("total millis: "+ (timeTaken/1000000) );
		out.println("nanos per autobox: "+ ( timeTaken/limit ) );
	}
}