第一種方式:?

<
html
>
?

<
head
><
title
>
取得系統時間
</
title
></
head
>
?

<
body
>
?

<%
java.util.Date?date
=
new
?java.util.Date();
%>
?

現在是:
<%=
date
%>
?

</
body
>
?

</
html
>
?

運行結果:?

現在是:Tue?Jul?
31
?
10
:
32
:
52
?CST?
2001
?

第二種方式:?

<%
@?page?
import
=
"
java.util.*,?java.text.*
"
?
%>
?

<
HTML
>
?

<
HEAD
><
TITLE
>
顯示當前時間
</
TITLE
></
HEAD
>
?

<
BODY
>
?

當前時間:?

<%
?

Date?now?
=
?
new
?Date();?

out.println(DateFormat.getTimeInstance().format(now));?

%>
?

</
BODY
>
?

</
HTML
>
?

運行結果:?

10
:
31
:
42
?AM?

第三種方式:?

<%
?

java.text.SimpleDateFormat?formatter?
=
?
new
?java.text.SimpleDateFormat(
"
yyyy年MM月dd日
"
);?

java.util.Date?currentTime_1?
=
?
new
?java.util.Date();?

out.print(formatter.format(currentTime_1));?

%>
?

運行結果:?

2001年07月31日?

第四種方式:?

<%
?

java.text.SimpleDateFormat?formatter?
=
?
new
?java.text.SimpleDateFormat(
"
yyyy/MM/dd?HH/mm/ss
"
);?

java.util.Date?currentTime_1?
=
?
new
?java.util.Date();?

out.print(formatter.format(currentTime_1));?

%>
?

運行結果:?

2001
/
07
/
31
?
10
/
32
/
52
?下面是Calender類的一些常量的定義
package?bulktree;

import?java.util.Calendar;
import?java.util.Date;


public?class?CalendarTest?
{
????public?static?void?main(String[]?arge)

????
{
????????CalendarTest?ct?=?new?CalendarTest();
????????Calendar?calendar?=?Calendar.getInstance();
????????//指示一個月中的某天
????????int?c1?=?calendar.get(Calendar.DATE);
????????System.out.println("Calendar.DATE="+c1);
????????//指示一個月中的某天
????????int?c2?=?calendar.get(Calendar.DAY_OF_MONTH);
????????System.out.println("Calendar.DAY_OF_MONTH="+c2);
????????//指示一個星期中的某天
????????int?c3?=?calendar.get(Calendar.DAY_OF_WEEK);
????????System.out.println("Calendar.DAY_OF_WEEK="+c3);
????????//指示當前月中的第幾個星期
????????int?c4?=?calendar.get(Calendar.DAY_OF_WEEK_IN_MONTH);
????????System.out.println("Calendar.DAY_OF_WEEK_IN_MONTH="+c4);
????????//指示當前年中的天數
????????int?c5?=?calendar.get(Calendar.DAY_OF_YEAR);
????????System.out.println("Calendar.DAY_OF_YEAR="+c5);

????????/**//*int?c6?=?calendar.get(Calendar.MONTH);
????????System.out.println("c6="+c6);
????????int?c7?=?calendar.get(Calendar.MONDAY);
????????System.out.println("c7="+c7);*/
????????//給定此?Calendar?的時間值,返回指定日歷字段可能擁有的最大值
????????int?c8?=?calendar.getActualMaximum(Calendar.DAY_OF_MONTH);
????????System.out.println("c8="+c8);
????????int?c9?=?calendar.getActualMaximum(Calendar.DAY_OF_WEEK);
????????System.out.println("c9="+c9);
????????//System.out.println(calendar.getTime());
????????//System.out.println(new?Date());
????????System.out.println(Calendar.DAY_OF_MONTH);
????????calendar.set(Calendar.DAY_OF_MONTH,1);
????????System.out.println(calendar.get(Calendar.DAY_OF_MONTH));
????}
}






























































































































?
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