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What is Turing Complete?
...n run, then it's Turing complete.
Most modern programming languages (e.g. Java, JavaScript, Perl, etc.) are all Turing complete because they each implement all the features required to run programs like addition, multiplication, if-else condition, return statements, ways to store/retrieve/erase dat...
Testing two JSON objects for equality ignoring child order in Java
I'm looking for a JSON parsing library that supports comparing two JSON objects ignoring child order, specifically for unit testing JSON returning from a web service.
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Compiled vs. Interpreted Languages
...be compiled again at a later stage to get native code (e.g. as done by the Java JVM JIT compiler).
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How are everyday machines programmed?
...s the 100 pound gorilla) that boot an embedded version of Linux and/or the Java JVM.
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Replacing all non-alphanumeric characters with empty strings
...); you don't need the "/" inside the regexp, I think you've confused with javascript patterns
– eriknyk
May 1 at 21:06
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Uses for Optional
Having been using Java 8 now for 6+ months or so, I'm pretty happy with the new API changes. One area I'm still not confident in is when to use Optional . I seem to swing between wanting to use it everywhere something may be null , and nowhere at all.
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When does System.gc() do something?
I know that garbage collection is automated in Java. But I understood that if you call System.gc() in your code that the JVM may or may not decide to perform garbage collection at that point. How does this work precisely? On what basis/parameters exactly does the JVM decide to do (or not do) a GC ...
Spring MVC: How to perform validation?
....
}
Method 1 : If you have Spring 3.x+ and simple validation to do, use javax.validation.constraints annotations (also known as JSR-303 annotations).
public class User {
@NotNull
private String name;
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}
You will need a JSR-303 provider in your libraries, like Hibernate Valida...
What difference between Jersey vs jax-rs
... For example: JAX-RS gives you a set of interfaces (standard Java interfaces) which are implemented by Jersey. So that set of interfaces (or classes) are needed as a dependency to be implemented.
– Ale Zalazar
Jul 26 '13 at 19:12
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Comment Inheritance for C# (actually any language)
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Java has this, and I use it all the time. Just do:
/**
* {@inheritDoc}
*/
And the Javadoc tool figures it out.
C# has similar marker:
<inheritDoc/>
You can read more here:
http://www.ewoodruff.us/shfbdocs/ht...