Calendar can; SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");//设置日期格式System.out.println(df.format(new Date()));// new Date()为获取当前系统时间can = df.getCalendar(); System.out.println(can.getTime()); System.out.println(can.getTimeInMillis());
Date date = new Date(); SimpleDateFormat f = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss:SSS"); System.out.println(f.format(date)); System.out.println(f.parse(f.format(date)));
Calendar can = Calendar.getInstance(); long time = System.currentTimeMillis(); System.out.println(time);//long 类型 time can.setTimeInMillis(time); SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");//设置日期格式 String timestr = df.format(can.getTime()); System.out.println(timestr);//输出格式化时间 can = df.getCalendar(); System.out.println(can.getTime()); System.out.println(can.getTimeInMillis());//之前的long 类型 time这个,刚才那个失误了 sorry
import java.text.SimpleDateFormat;
import java.util.Date;public class Util {
public String getName() {
return "Util Name";
}
public static void main(String[] args) throws ParseException {
long time = System.currentTimeMillis();
Date date = new Date(time);
String pattern = "yyyy-MM-dd HH:mm:ss:SSS";
SimpleDateFormat formatter = new SimpleDateFormat(pattern);
String dateString = formatter.format(date); // 时间到字符串
Date newDate = formatter.parse(dateString); // 字符串到时间
// 输出初始的秒数
System.out.println("创建时间的秒数: " + time);
// 输出格式化的时间字符串
System.out.println("时间格式化的字符串: " + dateString);
// 输出从字符串得到的时间的秒数
System.out.println("解析字符串得到Date对象的秒数: " + newDate.getTime());
}
}
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");//设置日期格式System.out.println(df.format(new Date()));// new Date()为获取当前系统时间can = df.getCalendar();
System.out.println(can.getTime());
System.out.println(can.getTimeInMillis());
Date date = new Date();
SimpleDateFormat f = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss:SSS");
System.out.println(f.format(date));
System.out.println(f.parse(f.format(date)));
long time = System.currentTimeMillis();
System.out.println(time);//long 类型 time
can.setTimeInMillis(time);
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");//设置日期格式
String timestr = df.format(can.getTime());
System.out.println(timestr);//输出格式化时间
can = df.getCalendar();
System.out.println(can.getTime());
System.out.println(can.getTimeInMillis());//之前的long 类型 time这个,刚才那个失误了 sorry