Date 01/01/1970 returning non-zero value for time

[Sonny Gill]

 
 
    String strTimeFormat = "HH:mm";
    SimpleDateFormat timeFormat = new SimpleDateFormat(strTimeFormat);
    Date date = timeFormat.parse("00:00");
 
    System.out.println(date);
    System.out.println(date.getTime());
 

    String strDateFormat = "yyyy/MM/dd";
    SimpleDateFormat dateFormat = new SimpleDateFormat(strDateFormat);
    date = dateFormat.parse("1970/01/01");
 
    System.out.println(date);
    System.out.println(date.getTime());
 

 

The resulting output is

 
Thu Jan 01 00:00:00 MYT 1970
-27000000
 
Thu Jan 01 00:00:00 MYT 1970
-27000000 

Hi Everyone,

What am I missing here, why is the date created returning a negative value for getTime()? Shouldnt it be 0?

Sonny

[somkiat puisungnoen]

getTime
public long getTime()Returns the number of milliseconds since January 1, 1970, 00:00:00 GMT represented by this Date object.

Returns:
the number of milliseconds since January 1, 1970, 00:00:00 GMT represented by this date.

But in your code is wrong to define year.

[Pradeep bhatt]

Returns the number of milliseconds since January 1, 1970, 00:00:00 GMT represented by this Date object.

I think it is negative because it is MYT and not GMT time zone.

[Peter van der Linden]

What timezone are you in, Sonny?

Are you by any chance in a time zone which is 27,000 seconds earlier than Greenwich?

27,000 seconds = 7.5 hours.
That would be (approx 15 degrees for each hour), equals 112.5 degrees east of Greenwich.

Cheers,

Peter

[Pradeep bhatt]

I got the following output. My timezone is +5.30 GMT.

Thu Jan 01 00:00:00 GMT+05:30 1970
-19800000
Thu Jan 01 00:00:00 GMT+05:30 1970
-19800000

[somkiat puisungnoen]

I'm test your code in my computer with change TimeZone in "GMT" , it work fine.

 
                        String strTimeFormat = "HH:mm";
SimpleDateFormat timeFormat = new SimpleDateFormat(strTimeFormat);
timeFormat.setTimeZone(TimeZone.getTimeZone("GMT"));
Date date = timeFormat.parse("00:00");
System.out.println(date);
System.out.println(date.getTime());

String strDateFormat = "dd/MM/yyyy";
SimpleDateFormat dateFormat = new SimpleDateFormat(strDateFormat, Locale.US);
dateFormat.setTimeZone(TimeZone.getTimeZone("GMT"));
date = dateFormat.parse("01/01/1970");
System.out.println(date);
System.out.println(date.getTime());

Result

Thu Jan 01 07:00:00 GMT+07:00 1970
0
Thu Jan 01 07:00:00 GMT+07:00 1970
0

[ September 28, 2004: Message edited by: somkiat puisungnoen ]
[ September 28, 2004: Message edited by: somkiat puisungnoen ]

[Pradeep bhatt]

MYT is Malaysia time.

[somkiat puisungnoen]

Originally posted by Pradeep Bhat:
I got the following output. My timezone is +5.30 GMT.

you got negative number because current timezone in your computer is fast than GMT (Standard timezone for java)

[Pradeep bhatt]

To find out the GMT time for your date object add the following line

System.out.println(date.toGMTString());

This will tell you why it is not zero.

[Sonny Gill]

Right on the mark Peter, and Pradeep.I am in Malaysia.
Time to go back and read up on the Javadocs for Date related classes again.

Thanks a lot, guys.
Sonny

[somkiat puisungnoen]

Originally posted by Pradeep Bhat:
To find out the GMT time for your date object add the following line

System.out.println(date.toGMTString());

This will tell you why it is not zero.

toGMTString() method of java.util.Date is depricated.

Deprecated. As of JDK version 1.1, replaced by DateFormat.format(Date date), using a GMT TimeZone.

[Pradeep bhatt]

Originally posted by somkiat puisungnoen:
[QB][/QB]

Yes I know it is deprecated but I hope you got my message.