うるう秒が表示されるかどうか見てみる

gistfile1.java

package example.time;

import java.time.ZoneId;
import java.time.ZonedDateTime;

public class LeapSecondPrint {

	public static void main(String... args) {
		ZonedDateTime end = ZonedDateTime.of(2015, 7, 1, 0, 0, 2, 0, ZoneId.systemDefault());
		for (ZonedDateTime now = ZonedDateTime.now(), prev = null; now.compareTo(end) <= 0; prev = now, now = ZonedDateTime.now()) {
			if (!now.equals(prev)) {
				System.out.println(now);
			}
		}
	}
}