くえびこwiki

import java.util.Date;
import java.text.SimpleDateFormat;
 
　・・・
 
Date now = new Date();
System.out.println(now);
 
SimpleDateFormat sdf = new SimpleDateFormat("yyyy'/'MM'/'dd' 'HH':'mm':'ss");
System.out.println(sdf.format(now));

Sun Jun 10 15:16:09 JST 2018
2018/06/10 15:16:09

※Java8以降

import java.time.*;
 
　・・・
 
Instant i = Instant.now();
ZonedDateTime z1 = i.atZone(ZoneId.of("Asia/Tokyo"));
 
ZonedDateTime z2 = ZonedDateTime.now();
 
System.out.println(z1);
System.out.println(z2);

2018-06-10T22:33:08.600+09:00[Asia/Tokyo]
2018-06-10T22:33:08.728+09:00[Asia/Tokyo]

※Java8以降

import java.time.*;
 
　・・・
 
LocalDateTime t = LocalDateTime.now();
 
System.out.println(t);

2018-06-10T22:36:11.303

※Java8以降