martes, junio 26, 2012

Bye, Bye, 5 * 60 * 1000 //Five Minutes, Bye, Bye

Llueve, llueve, y mientras nos mojamos como tontos. LLueve, llueve, y en un simple charco a veces nos ahogamos. (Llueve - Melendi)

In this post I am going to talk about one class that was first introduced in version 1.5, that I have used too much but talking with some people they said that they didn't know it exists. This class is TimeUnit.

TimeUnit class represents time durations at a given unit of granularity and also provides utility methods to convert to different units, and methods to perform timing delays.

TimeUnit is an enum with seven levels of granularity: DAYS, HOURS, MICROSECONDS, MILLISECONDS, MINUTES, NANOSECONDS and SECONDS.

The first feature that I find useful is the convert method. With this method you can say good bye to typical:

     private static final int FIVE_SECONDS_IN_MILLIS = 1000 * 5;

to something like:

     long duration = TimeUnit.MILLISECONDS.convert(5, TimeUnit.SECONDS);

But also equivalent operations in a better readable method exist. For example the same conversion could be expressed as:

     long duration = TimeUnit.SECONDS.toMillis(5);

The second really useful sets of operations are those related with stopping current thread.

For example you can sleep current thread with method:


instead of:


But you can also use it with join and wait with timeout.

     Thread t = new Thread();
     TimeUnit.SECONDS.timedJoin(t, 5);

So as we can see TimeUnit class is though in terms of expressiveness, you can do the same as you do previously but in a more fashionable way. Notice that you can also use static import and code will be even more readable.

Keep Learning,

5 comentarios:

Arend v. Reinersdorff dijo...

Thanks for the tip :-) Didn't know about TimeUnit.

Alternatively you could use the constants from Commons lang:

long delay = 5 * MILLIS_PER_MINUTE;

Alex Soto dijo...

Hi Arend thank you very much for reading my blog. I didn't know commons lang has this constants, thanks for the comment. The only disadvantage that I see is that you add a new dependency to your project.

Thanks for the comment,

Abel Ahar dijo...

for beginners like me need a lot of reading and searching for information on various blogs. and articles that you share a very nice and inspires me . cara menggugurkan kandungan

dong dong23 dijo...

nike air force 1
nike air max 2016
hollister clothing
toms shoes
louis vuitton handbags
ugg boots
canada goose
kate spade
seattle seahawks jerseys
cheap nfl jerseys

Meiqing Xu dijo...

cheap oakley sunglasses
michael kors outlet
polo ralph lauren outlet
tory burch outlet store
omega replica watches
red bottoms shoes
louis vuitton outlet store
rolex watches
oakley sunglasses

Donate If You Can and Find Post Useful