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What is the difference between an interface and abstract class?
...ometimes untrue. Sometimes, they are not even what you think they are.
In Java, this rule is strongly enforced, while in PHP, interfaces are abstract classes with no method declared.
In Python, abstract classes are more a programming trick you can get from the ABC module and is actually using meta...
Jackson Vs. Gson [closed]
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Jackson and Gson are the most complete Java JSON packages regarding actual data binding support; many other packages only provide primitive Map/List (or equivalent tree model) binding.
Both have complete support for generic types, as well, as enough configurabilit...
What does “atomic” mean in programming?
In the Effective Java book, it states:
6 Answers
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How can I use grep to find a word inside a folder?
...rent directory)
grep -nr 'MobileAppSer*' . (Would find MobileAppServlet.java or MobileAppServlet.class or MobileAppServlet.txt; 'MobileAppASer*.*' is another way to do the same thing.)
To check more parameters use man grep command.
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HashMap get/put complexity
...s to the same bucket, thus O(N) if each bucket is backed by a List.
since Java 8, HashMap dynamically replaces the Nodes (linked list) used in each bucket with TreeNodes (red-black tree when a list gets bigger than 8 elements) resulting to a worst performance of O(logN).
But, this in NOT the full...
How to convert comma-separated String to List?
Is there any built-in method in Java which allows us to convert comma separated String to some container (e.g array, List or Vector)? Or do I need to write custom code for that?
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JavaScript editor within Eclipse [closed]
I'm looking for the best JavaScript editor available as an Eclipse plugin. I've been using Spket which is good. But, is there more better one?
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Why must wait() always be in synchronized block
...ronization primitives at all and work with the abstractions offered in the java.util.concurrent packages.
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Comparison of Android networking libraries: OkHTTP, Retrofit, and Volley [closed]
...'s less documented but many of the people are supporting volley in github, java like documentation can be found here.
On android developer website, you may find guide for Transmitting Network Data Using Volley. And volley source code can be found at Google Git
To solve/change Redirect Policy of Vol...
How to start new activity on button click
...more codemissing than code actually typed. Where is all xml interface and .java code missing? Downvote
– Liquid Core
Jun 21 '15 at 12:50
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