Getting 'running' current time

[ohaya]

Hi,

I'm using:

import java.util.Date;
..
..
Date now = new Date();

to get the current date/time. This works fine, but I was wondering:
Each time this is invoked, it is doing a "new Date()", i.e., creating a
new Date instance.

Is there any way I can just refresh the current time, instead of doing a
"new" each time? Something like "now.update();"?

Thanks,
Jim

 

[Steve W. Jackson]

Hi,

I'm using:

import java.util.Date;
.
.
Date now = new Date();

to get the current date/time. This works fine, but I was wondering:
Each time this is invoked, it is doing a "new Date()", i.e., creating a
new Date instance.

Is there any way I can just refresh the current time, instead of doing a
"new" each time? Something like "now.update();"?

Thanks,
Jim

To capture the current date/time, use System.currentTimeMillis(), which
returns the current time in milliseconds since the epoch (a long). To
get a later date/time, call it again. You can pass that to the Date
constructor if you wish. Or if you want to create a Date object for
"now" (as in your example) and then update it later, you can call its
setTime(long time) method with the then-current system time:

now.setTime(System.currentTimeMillis());

You should get comfortable with the API JavaDocs, BTW.

= Steve =

 

[Eric Sosman]

Hi,

I'm using:

import java.util.Date;
.
.
Date now = new Date();

to get the current date/time. This works fine, but I was wondering:
Each time this is invoked, it is doing a "new Date()", i.e., creating a
new Date instance.

Is there any way I can just refresh the current time, instead of doing a
"new" each time? Something like "now.update();"?

now.setTime(System.currentTimeMillis())

 

[ohaya]

now.setTime(System.currentTimeMillis())

Eric and Steve,

Thanks!

Sorry. I did look at the Javadocs, but I missed the "currentTimeMillis"
part...

Jim

 

[Roedy Green]

to get the current date/time. This works fine, but I was wondering:
Each time this is invoked, it is doing a "new Date()", i.e., creating a
new Date instance.

Is there any way I can just refresh the current time, instead of doing a
"new" each time? Something like "now.update();"?

You are correct that works but creates a useless object in the
process.

See http://mindprod.com/jgloss/time.html

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Complicit Bush-friendly media keeps mum. Rumsfeld confesses on video.
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