package net.elaina.ZoneId;
import java.time.Instant;
import java.time.ZoneId;
import java.time.ZonedDateTime;
public class Test02 {
public static void main(String[] args) {
/*static Instant now( ) 获取当前时间的Instant对象(标准时间)
static Instant ofXxxx(long epochMilli) 根据(秒/毫秒/纳秒)获取Instant对象
ZonedDateTime atZone(ZoneId zone) 指定时区
boolean isXxx(Instant otherInstant) 判断系列的方法
Instant minusXxx(long millisToSubtract) 减少时间系列的方法
Instant plusXxx(long millisToSubtract) 增加时间系列的方法*/
//1.获取当前时间的Instant对象(标准时间)
Instant now = Instant.now();
System.out.println(now); // 2023-12-06T13:53:48.514158400Z
//2.根据(秒/毫秒/纳秒)获取Instant对象
Instant instant1 = Instant.ofEpochMilli(0L);
System.out.println(instant1); //1970-01-01T00:00:00Z
Instant instant2 = Instant.ofEpochSecond(1L);
System.out.println(instant2); //1970-01-01T00:00:01Z
Instant instant3 = Instant.ofEpochSecond(1L, 1000000000L);
System.out.println(instant3); //1970-01-01T00:00:02Z
//3.指定时区
ZonedDateTime time = Instant.now().atZone(ZoneId.of("Asia/Shanghai"));
System.out.println(time); //2023-12-06T22:14:50.854587800+08:00[Asia/Shanghai]
//4.判断系列的方法
Instant instant4 = Instant.ofEpochMilli(0L);
Instant instant5 = Instant.ofEpochMilli(1000L);
//isBefore:判断调用者代表的时间是否再参数表示时间的前面
boolean result1 = instant4.isBefore(instant5);
System.out.println(result1); //true
//isAfter:判断调用者代表的时间是否在参数表示时间的后面
boolean result2 = instant4.isAfter(instant5);
System.out.println(result2); //false
//5.减少时间系列的方法
Instant instant6 = Instant.ofEpochMilli(3000L);
System.out.println(instant6); //1970-01-01T00:00:03Z
Instant instant7 = instant6.minusSeconds(1);
System.out.println(instant7);//1970-01-01T00:00:02Z
}
}