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Jun
27
comment How to use Guice for an effective API Design?
You typically create the injector once, for example in your main, to setup the modules you want and then just use @Inject where you need...
Jun
14
comment Best way to handle blank dates
You should probably not use Optional<XX> as a field - it's really meant to be used as a return type from a method. So in this case I would have a private LocalDate dateOfBirth field that may be null - but getAge or getDateOfBirth could return an OptionalInt or Optional<LocalDate> respectively.
Jun
14
comment Why should PHP developer use/learn VI editor?
stackoverflow.com/questions/208193/why-should-i-use-an-ide
Jun
9
comment Using an LGPL licensed library that may or may not include GPL licensed code from an MIT licensed library
only 4...... :-)
Feb
27
comment 2 methods that are 75% the same?
The if/else thingy is quite ugly. You should have two methods for the specific parts (the if/else blocks) and another method for the common part - that would be much cleaner IMO...
May
27
comment How to analyze a scenario where a bug didn't get caught and adjust development workflow to prevent similar errors
@RobertHarvey I would suggest the other way round: write a test that goes red then fix the code!
Apr
3
comment Are monads a viable (maybe preferable) alternative to inheritance hierarchies?
Not sure I understand how it works: a squirrel and a duck don't fly the same way - so the "fly action" needs to be implemented in those classes... And the flier needs a method to make the squirrel and the duck fly... Maybe in a common Flier interface... Oops wait a minute... Did I miss something?
Apr
1
comment Java's Boolean class - why not an enum?
It wouldn't have been very difficult to add a of or from method and appropriate javadoc.
Apr
1
comment Make methods that do not depend on instance fields, static?
There is an important distinction between static methods with and without side effects. The Google extract really addresses the former.
Mar
31
comment Why is CPU cache memory so fast?
What every programmer should know about memory
Mar
20
comment Java Method Returns Unbounded Type
To simplify, SO is for questions about specific issues with a specific piece of code. Programmers is for higher level question such as design and architecture, algorithms etc. So in this instance SO would probably be a better fit.
Mar
19
comment Java Method Returns Unbounded Type
@thlim Actually I think my answer is incorrect. You would probably get more and better answers on stackoverflow.
Mar
7
comment What exactly is the Garbage Collector in Java?
@back2dos See for example programmers.stackexchange.com/a/149569/47845 - I did not say GC is the only option, only that it has become very efficient (BTW object pooling can actually perform worse in some cases). As for the blocking of the GC - it may or may not be an issue depending on your use case (and even that issue has been reduced significantly by modern concurrent GC algos) - if you need pure real time then yes, GC will be an issue. So I do believe that a modern GC will perform way better than what 99% developers could do by managing memory manually. There is the 1% of course.
Mar
4
comment What exactly is the Garbage Collector in Java?
Your answer maybe understates the power and performance of algorithms. Java's gc (probably other languages too) is extremely good at managing short lived objects making object allocation an extremely cheap operation. Not only does it prevent bugs but it can also improve performance vs a naive manual approach.
Feb
11
comment Choosing value in SQL query vs (Java) code
If it is null final int id = rs.getInt("Id"); will throw an exception...
Feb
11
comment Thread safe GUI programming
weblogs.java.net/blog/kgh/archive/2004/10/multithreaded_t.html
Feb
10
comment equals and hashcode methods autogenerated, is it always a good practice?
Unless a class clearly documents what its equals and hashcode methods do, I would not assume anything about how instances of that class would behave in a hashset/hashmap.
Feb
9
comment Returning null or a empty value/throw exception?
See also stackoverflow.com/questions/271526/…
Feb
8
comment Whats the best way to parallel my problem using Java API
You would probably get more answer on stackoverflow or codereview.stackexchange.com
Jan
30
comment Why are the Java 8 java.time classes missing a getMillis() method?
@AllonGuralnek Yes definitely - however the milliseconds component was important in the Date API because everything was based on a number of millis since the epoch. In the new API it is less relevant IMO. In most use cases, you either need a second precision or the best precision available (nanos). I may be wrong.