Question

java怎么获取系统时间并赋值给String常量

Answer 1

你可以new Date()就是获得系统时间，
不过这个的格式跟我们平常的不一样，所以呢，还是必须要用：
new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date());
还有一个问题，就是如果你的是win7系统，有可能时间获取不正确，这个需要你去改的，去网上搜下还是有答案的。

Answer 2

导包 import java.util.*;
主方法中写 Date date=new Date();
String riqi=date.toString();
就可以了。望采纳

Answer 3

new SimpleDateFormat("yyyy年MM月dd日 HH:mm:ss").format(Calendar.getInstance().getTime());

Answer 4

new SimpleDateFormat("yyyy年MM月dd日 HH:mm:ss").format(new Date());

Answer 5

我把我用的获取系统时间类 给你吧 很好用的
package gavin.util;

import java.text.SimpleDateFormat;
import java.util.Calendar;

public class GetSystemTime {

private Calendar now = Calendar.getInstance();
private int year = now.get(Calendar.YEAR);
private int month = now.get(Calendar.MONTH) + 1;
private int day = now.get(Calendar.DAY_OF_MONTH);
private int hour = now.get(Calendar.HOUR);
private int minute = now.get(Calendar.MINUTE);
private int second = now.get(Calendar.SECOND);

public String getToday() {
String monthString = month + "";
if (month < 10)
monthString = "0" + monthString;

String dayhString = day + "";
if (day < 10)
dayhString = "0" + dayhString;

String today = this.year + monthString + dayhString;
return today;
}

public String getYearMonth() {
String today = this.year + "" + this.month;
return today;
}

public String getYera() {
return this.year + "";
}

public String getTohours() {

SimpleDateFormat setDateFormat = new SimpleDateFormat("HH:mm:ss");
String temp = setDateFormat.format(Calendar.getInstance().getTime());
return temp;
}

public String getDateTime() {
String monthString = month + "";
if (month < 10)
monthString = "0" + monthString;
String dayhString = day + "";
if (day < 10)
dayhString = "0" + dayhString;
String hourString = hour + "";
if (hour < 10)
hourString = "0" + hourString;
String minuteString = minute + "";
if (minute < 10)
minuteString = "0" + minuteString;
String secondString = second + "";
if (second < 10)
secondString = "0" + secondString;

String today = this.year + monthString + dayhString + hourString
+ minuteString + secondString;
return today;
}

}