设置日期对象 Java

Question

I have a date object myDate(say). After doing the following:

Calendar cal = Calendar.getInstance();
cal.set(Calendar.MONTH, 9);
cal.set(Calendar.DATE, 24);
cal.set(Calendar.YEAR, 2013);
cal.set(Calendar.HOUR,13);
cal.set(Calendar.MINUTE,45);
cal.set(Calendar.SECOND,52);

I want to set the myDate object to the above values and hence show the below output.

Mon Sep 09 13:45:52 PST 2013

Please let me know how to do it.

Answer 1

import java.util.*;

public class DateTest {
    public static void main(String[] args) {
        Date myDate;
        Calendar cal = Calendar.getInstance();
        cal.set(Calendar.MONTH, 8);
        cal.set(Calendar.DATE, 24);
        cal.set(Calendar.YEAR, 2013);
        cal.set(Calendar.HOUR,13);
        cal.set(Calendar.MINUTE,45);
        cal.set(Calendar.SECOND,52);
        myDate = cal.getTime();
        System.out.println(myDate);
    }
}

Answer 2

The months attribute starts from January = zero . Why oh why did Sun do such a counter-intuitive thing, I don't know.

import java.util.*;

public class DateTest {
    public static void main(String[] args) {
        Date myDate;
        Calendar cal = Calendar.getInstance();
        cal.set(Calendar.MONTH, 8);
        cal.set(Calendar.DATE, 24);
        cal.set(Calendar.YEAR, 2013);
        cal.set(Calendar.HOUR,13);
        cal.set(Calendar.MINUTE,45);
        cal.set(Calendar.SECOND,52);
        myDate = cal.getTime();
        System.out.println(myDate);
    }
}

One other consideration, the output has a timezone in it - if you want the timezone of the Java installation, no probs. If you want PST and the Java timezone default is somewhere else , then use the following constructor:

TimeZone timezone = TimeZone.getTimeZone("America/Los_Angeles");
Calendar cal = Calendar.getInstance(timezone);

Answer 3

你可以写：

myDate.setTime(cal.getTimeInMillis());

Answer 4

使用SimpleDateFormat ：

new SimpleDateFormat("EEE MMM dd HH:mm:ss z yyyy").format(cal.getTime())