Date class
In this chapter you will learn:
Java Date class
The class Date represents a specific instant in time, with millisecond precision.
The following representations are used when accepting or returning year, month, date, hours, minutes, and seconds values.
- A year y is represented by the integer y - 1900.
- A month is represented by an integer from 0 to 11; 0 is January, 11 is December.
- A date (day of month) is represented by an integer from 1 to 31 in the usual manner.
- An hour is represented by an integer from 0 to 23. hour from midnight to 1 a.m. is hour 0, and the hour from noon to 1 p.m. is hour 12.
- A minute is represented by an integer from 0 to 59.
- A second is represented by an integer from 0 to 61; the values 60 and 61 occur only for leap seconds.
A date may be specified as January 32 and is interpreted as meaning February 1.
Create Date object
-
Date()creates a Date and initializes it with the current time Date(long date)creates a Date and initializes it to represent the specified number of milliseconds since January 1, 1970, 00:00:00 GMT.
import java.util.Date;
/*from j a v a2 s.com*/
public class Main{
public static void main(String args[]) {
Date date = new Date();
System.out.println(date);
long msec = date.getTime();
System.out.println("Milliseconds since Jan. 1, 1970 GMT=" + msec);
}
}
The output:
The following code creates java Date from specific time.
import java.util.Date;
/* ja v a 2 s . co m*/
import java.util.Date;
public class Main {
public static void main(String[] args) {
Date d = new Date(365L * 24L * 60L * 60L * 1000L+99999999L);
System.out.println(d);
}
}
The output:
Next chapter...
What you will learn in the next chapter:
Home » Java Tutorial » Date, Time, Calendar, TimeZone