新手求解 java如何获取当前时间，最好语句少一点的

Question

public static void main(String[] args) {
        Calendar now=Calendar.getInstance(); 
        int month = now.get(Calendar.MONTH) + 1;
        String m = "";    //
        
        if(month < 10) {   //
            m = "0"+month;
        }
        
        String time = now.get(Calendar.YEAR)+ m + now.get(Calendar.DAY_OF_MONTH) + 
                      now.get(Calendar.HOUR_OF_DAY)+now.get(Calendar.MINUTE)+
                      now.get(Calendar.SECOND)+now.get(Calendar.MILLISECOND);
        System.out.println(time);    }
  这里的m是干嘛的  求注释

Answer 1

DateFormat dateFormat = new SimpleDateFormate("yyyy-MM-dd HH:mm:ss.SSS");
System.out.println(dateFormat.format(new Date()));

Answer 2

System.out.println(new SimpleDateFormat("yyyy-MM-dd").format(new Date()));
//2011-10-19

Answer 3

System.out.println(new SimpleDateFormat("yyyy-MM-dd").format(new Date()));

Answer 4

只要当前时间是么,一句就够了:System.out.println(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()));

Answer 5

这是源代码：import java.util.Date;
import java.text.DateFormat;
import java.util.Locale;
public class  DateDemo02
{
public static void main(String[] args) 
{
DateFormat df1 = DateFormat.getDateInstance(DateFormat.YEAR_FIELD,new Locale("zh","CH"));
DateFormat df2 = DateFormat.getDateTimeInstance(DateFormat.YEAR_FIELD,DateFormat.ERA_FIELD,new Locale("zh","CH"));
System.out.println(df1.format(new Date()));
System.out.println(df2.format(new Date()));
}
}

Answer 6

DateFormat dateFormat = new SimpleDateFormate("yyyy-MM-dd HH:mm:ss.SSS");
System.out.println(dateFormat.format(new Date()));
一般需要导入import java.util.Date; import java.text.DateFormat;

Answer 7

Java code
System.out.println(new SimpleDateFormat("yyyy-MM-dd  HH:mm:ss").format(new Date()));

Answer 8

SimpleDateFormat sdf = .....那一套东西

Answer 9

定义m是为了用两位数来表示 月份:
小于10的1月==>  01