J2ME in time to deal with Destination
Abstract: The time to deal with the J2ME Destination
J2ME in time to deal with Destination
Author: Chen Yue-feng
From: http://blog.csdn.net/mailbomb
Time in the development of a common procedure, the time to deal with the following do a simple explanation.
First, the expression of time
J2ME in time there are two expressions:
1, and GMT1970 to January 1, 12:00 and midnight is the difference between a few milliseconds to represent
Comparing this way for the difference between the two time.
2 to object to the form of expression
Second, the time to deal with related
J2ME time involved in the three categories:
1, Class System
Long time = System. CurrentTimeMillis ();
The method can be used current time, time for the expression of the above-mentioned first.
2, Date of
Date date = new Date ();
Access to the current time, the use of objects in the form of expression.
3, Class Calendar
Calendar calendar = Calendar. GetInstance ();
Third, time to deal with the specific operation
1, the expression of more than three conversion:
A) System of the time was converted to Date object
Date date = new Date (System. currentTimeMillis ());
B) Date type of object will be converted to an object of type Calendar
Calendar calendar = Calendar. GetInstance ();
Date date = new Date ();
Calendar.setTime (date);
2, the date of the completion of some use Calendar operation:
Calendar time is the most commonly used is the most powerful category, can be used to be a time of the date of the week, and other information.
Date of access:
Calendar calendar = Calendar. GetInstance ();
……
Int day = calendar.get (Calendar. DATE);
Access date, year, and this week a similar operation.
It must be noted that: Calendar in the figures and said that in a practical difference, that is, by January the number 0, in February with a figure that…… December with 11 figures said.
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Tags: Time