Java Core Technology Volume One note six date class

Tag: Util indicates date () Date class specifies date standard int ring

In the Java core Technology volume, the first date class appears in a very high frequency, so we have a small integration of the date class

The date class has two

The date class represents a specific time class

This constructor assigns a Date object and initializes it to represent the specified number of milliseconds because it is called the "era", which is the standard time of January 1, 1970 00:00:00 GMT.

It's like Greenwich Mean. As a benchmark value exists

Commonly used is date to string type

String s=new Date (0). toString ();
System.out.println (S.tostring ());

Two different date classes use the same method to have different values

If you use Util. The result of a Date;

Thu Jan 08:00:00 CST 1970

If you use SQL. The result of a Date;

1970-01-01

Output the current time (note that the output is now only available in Util.   Date; Sql. Date; This output format is not supported)

System.out.println (New Date ());

Java Core Technology Volume One note six date class