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Iterate through a HashMap [duplicate]
What's the best way to iterate over the items in a HashMap ?
7 Answers
7
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The JPA hashCode() / equals() dilemma
There have been some discussions here about JPA entities and which hashCode() / equals() implementation should be used for JPA entity classes. Most (if not all) of them depend on Hibernate, but I'd like to discuss them JPA-implementation-neutrally (I am using EclipseLink, by the way).
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About Java cloneable
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The first thing you should know about Cloneable is - don't use it.
It is very hard to implement cloning with Cloneable right, and the effort is not worth it.
Instead of that use some other options, like apache-commons SerializationUtils (deep-clone) or BeanUtils (shallow-clone), or sim...
Best approach to real time http streaming to HTML5 video client
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EDIT 3: As of IOS 10, HLS will support fragmented mp4 files. The answer
now, is to create fragmented mp4 assets, with a DASH and HLS manifest. > Pretend flash, iOS9 and below and IE 10 and below don't exist.
Everything b...
How do you find all subclasses of a given class in Java?
...iven interface) in Java?
As of now, I have a method to do this, but I find it quite inefficient (to say the least).
The method is:
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How do I uninstall a Windows service if the files do not exist anymore?
...e.
Method 1 - You can use the SC tool (Sc.exe) included in the Resource Kit.
(included with Windows 7/8)
Open a Command Prompt and enter
sc delete <service-name>
Tool help snippet follows:
DESCRIPTION:
SC is a command line program used for communicating with the
NT Serv...
sql primary key and index
...et as the primary key. If I query off the ID often do I also need to index it? Or does it being a primary key mean it's already indexed?
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PersistentObjectException: detached entity passed to persist thrown by JPA and Hibernate
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This is a typical bidirectional consistency problem. It is well discussed in this link as well as this link.
As per the articles in the previous 2 links you need to fix your setters in both sides of the bidirectional relationship. An example setter for the One side is in this ...
NVIDIA vs AMD: GPGPU performance
I'd like to hear from people with experience of coding for both. Myself, I only have experience with NVIDIA.
10 Answers
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AppStore - App status is ready for sale, but not in app store
...hanges to 'Ready for Sale' you will get official mail from Apple. The mail itself states that it might take 24 hours before your App is available on AppStore.
If it takes more than days then contact Apple.
Refer below screenshot.
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