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Encapsulation vs Abstraction?
...traction. However, there are other uses which just aid in maintainability etc.
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Technically what is the main difference between Oracle JDK and OpenJDK? [duplicate]
...arted to notice random/unknown fatal error and crashes (with H.264 codecs, etc.), and it was a nightmare till then to get ride of system crash+fatal errors caused by OpenJDK.
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Why must wait() always be in synchronized block
...the x-level cache (a.k.a. 1st/2nd/3rd-level caches) of the thread handling CPU core.
But synchronized blocks are only one side of the medal: If you actually access an object within a synchronized context from a non-synchronized context, the object still won't be synchronized even within a synchroni...
Random shuffling of an array
... one in an object just to do a sort is a bit costly, both in memory and in CPU.
– PhiLho
Jul 11 '14 at 11:11
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Difference between java.util.Random and java.security.SecureRandom
...dom takes Random Data from your os(they can be interval between keystrokes etc - most os collect these data store them in files - /dev/random and /dev/urandom in case of linux/solaris) and uses that as the seed. So if the small token size is okay(in case of Random), you can continue using your code...
如何高效的学习掌握新技术 - 杂谈 - 清泛网 - 专注C/C++及内核技术
...当于又打开了一扇新的大门，可以从更宽广的角度来看待问题。
从心理学的角度来说，我们对于外部世界的认识可分为三个区域：舒适区，学习区，和恐慌区。我们所熟悉的技术领域就是舒适区，而新技术是处于学习区或恐慌...
Java Timer vs ExecutorService?
...oss other systems in a cluster and do things like one-off batch execution, etc...
Just look at what each offers to decide.
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If vs. Switch Speed
...tch" like statements internally that have a mix of ranges, single targets, etc -- and they can (and do) do this for both switch and if..else statements.
Anyhoo, an extension to Konrad's answer is that the compiler may generate a jump table, but that's not necessarily guaranteed (nor desirable). Fo...
jasmine: Async callback was not invoked within timeout specified by jasmine.DEFAULT_TIMEOUT_INTERVAL
...at helped until I noticed my Macbook was running sluggishly. I noticed the CPU was pegged by another process, which I killed. The Jasmine async error disappeared and my tests are fine once again.
Don't ask me why, I don't know. But in my circumstance it seemed to be a lack of system resources at fa...
When do I need to use AtomicBoolean in Java?
...pent in
managing the synchronization
mechanism itself (waiting, notifying,
etc). Since the new API uses hardware
level constructs (atomic variables)
and wait and lock free algorithms to
implement thread-safety, a lot more
of CPU time is spent "doing stuff"
rather than in managing
synchronization.
no...