Java Date Time - ZonedDateTime.minus() Examples

package com.logicbig.example.zoneddatetime;

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

public class MinusExample {

    public static void main(String... args) {
        ZonedDateTime d = ZonedDateTime.of(2017, 3, 10, 21, 10, 50, 10000, ZoneId.systemDefault());
        System.out.println(d);

        ZonedDateTime d2 = d.minus(Duration.ofHours(10));
        System.out.println(d2);

        ZonedDateTime d3 = d.minus(Duration.ofHours(100));
        System.out.println(d3);

        ZonedDateTime d4 = d.minus(Duration.ofHours(-100));
        System.out.println(d4);
    }
}

package com.logicbig.example.zoneddatetime;

import java.time.DateTimeException;
import java.time.ZonedDateTime;
import java.time.temporal.ChronoUnit;

public class MinusExample2 {

    public static void main(String... args) {
        ZonedDateTime d = ZonedDateTime.now();
        System.out.println(d);

        for (ChronoUnit chronoUnit : ChronoUnit.values()) {
            try {
                ZonedDateTime d2 = d.minus(4, chronoUnit);
                System.out.printf("%10s: %s%n", chronoUnit.name(), d2);
            } catch (DateTimeException e) {
                System.out.printf("%10s: not supported%n", chronoUnit.name());
            }
        }
    }
}