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java: Class.isInstance vs Class.isAssignableFrom
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I disagree. If you look up the Javadoc of Byte you will discover it extends Number and is a class. (byte) 1 is not equivalent to Byte. The former is a primitive. The latter is a Class.
– Gili
Feb 28 '14 at 22:11
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Is it unnecessary to put super() in constructor?
...tends Base { }
This is fine because if you add no constructor explicitly Java puts in a public default constructor for you.
public class Base { }
public class Derived extends Base { public Derived(int i) { } }
Also fine.
public class Base { public Base(String s) { } }
public class Derived exte...
Do you (really) write exception safe code? [closed]
...you really write exception safe code?
Of course, I do.
This is the reason Java lost a lot of its appeal to me as a C++ programmer (lack of RAII semantics), but I am digressing: This is a C++ question.
It is, in fact, necessary when you need to work with STL or Boost code. For example, C++ threads (...
Difference between “@id/” and “@+id/” in Android
...us symbol + instructs to create a new resource name and add in to the R.java file but what about @id/ ? From the documentation of ID : when referencing an Android resource ID , you do not need the plus symbol, but must add the android package namespace, like so:
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@RequestParam vs @PathVariable
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@AlexO: this has nothing to do with java8, it works even for java 5 and Spring3.0: The point is that the code is compiled with debugging enabled.
– Ralph
Oct 23 '16 at 8:18
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What is the difference between @Inject and @Autowired in Spring Framework? Which one to use under wh
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Assuming here you're referring to the javax.inject.Inject annotation. @Inject is part of the Java CDI (Contexts and Dependency Injection) standard introduced in Java EE 6 (JSR-299), read more. Spring has chosen to support using the @Inject annotation synonymously...
What is x after “x = x++”?
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@EmeraldWeapon It's defined in Java. It's only in C/C++ do you see that kind of shenanigans.
– Mysticial
Apr 24 '16 at 15:08
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Why use Ruby instead of Smalltalk? [closed]
...of 'smalltalk as embedded scripting language' never caught on.As an aside, Java was not the easiest thing to interface with other code bases (JNI is fairly clumsy), but that did not stop it from gaining mindshare. IMO the interfacing argument is significant - ease of embedding hasn't hurt Python - ...
Naming Classes - How to avoid calling everything a “Manager”? [closed]
... copy the names already in the .NET framework, and I look for ideas in the Java and Android frameworks.
It seems Helper, Manager, and Util are the unavoidable nouns you attach for coordinating classes that contain no state and are generally procedural and static. An alternative is Coordinator.
You...
“Comparison method violates its general contract!”
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Introduced in Java 7's java.util.Arrays.sort stackoverflow.com/questions/7849539/…
– leonbloy
Jun 22 '16 at 17:28
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