Poking at anonymous inner classes

AnonTest.java

import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;

public class AnonTest {

	public static void main(String[] args) {
		//
		System.out.printf("i\tNamed\tAnonymous%n");
		for (int i = 0; i < 10; i += 1) {
			// generate points
			List<Point> sortMe = Point.makeRandomPoints(100000);
			
			double avgNamedTime = Timer.averageTime(AnonTest::sortNamed, sortMe, 2);
			double avgAnonTime = Timer.averageTime(AnonTest::sortAnon, sortMe, 2);
			
			System.out.printf("%d\t%6.2f\t%6.2f%n", i, avgAnonTime, avgNamedTime);
		}
	}
	
	static List<Point> sortNamed(List<Point> points) {
		List<Point> copy = copyList(points);
		copy.sort(new CompareX());
		copy.sort(new CompareY());
		return copy;
	}
	
	static List<Point> sortAnon(List<Point> points) {
		List<Point> copy = copyList(points);
		copy.sort(new Comparator<Point>() {
			@Override
			public int compare(Point p1, Point p2) {
				int x1 = p1.x();
				int x2 = p2.x();
				
				if (x1 < x2) {
					return -1;
				} else if (x1 > x2) {
					return 1;
				} else {
					return 0;
				}
			}
		});
		copy.sort(new Comparator<Point>() {
			@Override
			public int compare(Point p1, Point p2) {
				int y1 = p1.y();
				int y2 = p2.y();
				
				if (y1 < y2) {
					return -1;
				} else if (y1 > y2) {
					return 1;
				} else {
					return 0;
				}
			}
		});
		return copy;
	}
	
	private static <T> List<T> copyList(List<T> its) {
		List<T> copyOf = new ArrayList<>(its.size());
		copyOf.addAll(its);
		return copyOf;
	}

}

// totally normal class that implements comparator
class CompareX implements Comparator<Point> {

	@Override
	public int compare(Point p1, Point p2) {
		int x1 = p1.x();
		int x2 = p2.x();
		
		if (x1 < x2) {
			return -1;
		} else if (x1 > x2) {
			return 1;
		} else {
			return 0;
		}
	}
}

class CompareY implements Comparator<Point> {

	@Override
	public int compare(Point p1, Point p2) {
		int y1 = p1.y();
		int y2 = p2.y();
		
		if (y1 < y2) {
			return -1;
		} else if (y1 > y2) {
			return 1;
		} else {
			return 0;
		}
	}
}

sample_result.txt

i	Named	Anonymous
0	 48.00	 74.00
1	 37.00	 43.00
2	 37.00	 36.50
3	 35.50	 39.00
4	 35.50	 35.50
5	 35.00	 37.50
6	 36.00	 35.50
7	 35.50	 35.50
8	 35.50	 34.50
9	 35.00	 35.50