java時間格式化處理處理
阿新 • • 發佈：2019-01-06
SimpleDateFormat的建構函式中String中字元的含義列如下表:
Letter Date or Time Component Presentation Examples
G Era designator Text AD
y Year Year 1996； 96
M Month in year Month July； Jul； 07
w Week in year Number 27
W Week in month Number 2
D Day in year Number 189
d Day in month Number 10
F Day of week in month Number 2
E Day in week Text Tuesday； Tue
a Am/pm marker Text PM
H Hour in day (0-23) Number 0
k Hour in day (1-24) Number 24
K Hour in am/pm (0-11) Number 0
h Hour in am/pm (1-12) Number 12
m Minute in hour Number 30
s Second in minute Number 55
S Millisecond Number 978
z Time zone General time zone Pacific Standard Time； PST； GMT-08:00
Z Time zone RFC 822 time zon
上面展示的例子是將Date格式化成我們想要的格式，通常還會遇到需要將有些已經格式好的String再解析成Date的問題。在下面的文章中將會講到。
import java.text.*;
import java.util.Locale;
import java.util.Date;
public class DateFormatTest {
public DateFormatTest() {
}
public static void main(String[] args) {
String dateToparse="30-12-2004"；
SimpleDateFormat sdf=new SimpleDateFormat("dd-MM-yyyy")
Date dt=new Date()
try{
dt=sdf.parse(dateToparse)
System.out.print(dt)
}catch(Exception e){
e.printStackTrace();
}}}
Letter Date or Time Component Presentation Examples
G Era designator Text AD
y Year Year 1996； 96
M Month in year Month July； Jul； 07
w Week in year Number 27
W Week in month Number 2
D Day in year Number 189
d Day in month Number 10
F Day of week in month Number 2
E Day in week Text Tuesday； Tue
a Am/pm marker Text PM
H Hour in day (0-23) Number 0
k Hour in day (1-24) Number 24
K Hour in am/pm (0-11) Number 0
h Hour in am/pm (1-12) Number 12
m Minute in hour Number 30
s Second in minute Number 55
S Millisecond Number 978
z Time zone General time zone Pacific Standard Time； PST； GMT-08:00
Z Time zone RFC 822 time zon
上面展示的例子是將Date格式化成我們想要的格式，通常還會遇到需要將有些已經格式好的String再解析成Date的問題。在下面的文章中將會講到。
import java.text.*;
import java.util.Locale;
import java.util.Date;
public class DateFormatTest {
public DateFormatTest() {
}
public static void main(String[] args) {
String dateToparse="30-12-2004"；
SimpleDateFormat sdf=new SimpleDateFormat("dd-MM-yyyy")
Date dt=new Date()
try{
dt=sdf.parse(dateToparse)
System.out.print(dt)
}catch(Exception e){
e.printStackTrace();
}}}