Java 将字符串转换为 am/pm 格式的日期和时间
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convert string to date and time as am/pm format
提问by Developer
string : 2014-04-25 17:03:13
using SimpleDateFormat is enough to format? or otherwise i will shift to any new API?
使用 SimpleDateFormat 足以格式化吗？否则我会转向任何新的 API？
Date date = new Date(string);
DateFormat dateFormat = new SimpleDateFormat ("yyyy-MM-dd");
out.println( dateFormat.format (date));
My expected result is (India zone):
我的预期结果是（印度区）：
Date : 25-04-2014
Time : 05:03 PM
采纳答案by Bohemian
Remembering that Dateobjects have no inherent format, you need two DateFormatobjects to produce the result you seek - one to parse and another to format:
记住Date对象没有固有格式，您需要两个DateFormat对象来生成您寻求的结果 - 一个用于解析，另一个用于格式化：
String input = "2014-04-25 17:03:13";
DateFormat inputFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
DateFormat outputFormat = new SimpleDateFormat("'Date : 'dd-MM-yyyy\n'Time : 'KK:mm a");
System.out.println(outputFormat.format(inputFormat.parse(input)));
Output:
输出：
Date : 25-04-2014
Time : 05:03 PM
Note the use of quoted sequences in the format, such a "'Date : '", which is treated as a literal within the format pattern.
请注意格式中引用序列的使用，例如 a "'Date : '"，它被视为格式模式中的文字。
回答by hashplus
回答by Anil Satija
Try given below sample code:
尝试给出以下示例代码：
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date date = new Date();
System.out.println(dateFormat.format(date));
//Output: 2013-05-20 10:16:44
For more functionalities on Data and Time try Joda-Time API.
有关数据和时间的更多功能，请尝试Joda-Time API。
回答by Pawan asati
I custom onTimeSet()function . Send the hourand minutesto it. It will return the time with format am and pm
我自定义onTimeSet()函数。发送hour和minutes到它。它将返回时间format am and pm
public static String onTimeSet( int hour, int minute) {
Calendar mCalen = Calendar.getInstance();;
mCalen.set(Calendar.HOUR_OF_DAY, hour);
mCalen.set(Calendar.MINUTE, minute);
int hour12format_local = mCalen.get(Calendar.HOUR);
int hourOfDay_local = mCalen.get(Calendar.HOUR_OF_DAY);
int minute_local = mCalen.get(Calendar.MINUTE);
int ampm = mCalen.get(Calendar.AM_PM);
String minute1;
if(minute_local<10){
minute1="0"+minute_local;
}
else
minute1=""+minute_local;
String ampmStr = (ampm == 0) ? "AM" : "PM";
// Set the Time String in Button
if(hour12format_local==0)
hour12format_local=12;
String selecteTime=hour12format_local+":"+ minute1+" "+ampmStr;
retrun selecteTime;
}
