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How can I sort a List alphabetically?
...ssuming that those are Strings, use the convenient static method sort…
java.util.Collections.sort(listOfCountryNames)
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Why there is no ConcurrentHashSet against ConcurrentHashMap
...u use a method to produce a set from a given map (or map class).
Prior to Java 8, you produce a concurrent hash set backed by a concurrent hash map, by using Collections.newSetFromMap(map)
In Java 8 (pointed out by @Matt), you can get a concurrent hash set view via ConcurrentHashMap.newKeySet(). T...
String.equals versus == [duplicate]
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@mo in some cases even in java == can be misleading. Java caches strings and so something like this would return true. String a = "Hello"; String b = "Hello"; a == b is true even though one would normally expect the result to be false.
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“loop:” in Java code. What is this, and why does it compile?
...but as a side note:
I have heard of interview questions a la "Why is this Java code valid?" (stripped the simpler example; here's the meaner one, thx Tim Büthe):
url: http://www.myserver.com/myfile.mp3
downLoad(url);
Would you all know what this code is (apart from awful)?
Solution: two labels...
Encoding URL query parameters in Java
How does one encode query parameters to go on a url in Java? I know, this seems like an obvious and already asked question.
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Understanding spring @Configuration class
...ive.profiles and set the environment variable. Spring now recommends using java config - docs.spring.io/spring-boot/docs/current/reference/htmlsingle/…
– Jack Viers
Dec 22 '14 at 18:54
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How to lock compiled Java classes to prevent decompilation?
How do I lock compiled Java classes to prevent decompilation?
9 Answers
9
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Read entire file in Scala?
...out Source: yes, it is the canonical I/O library. Most code ends up using java.io due to its lower-level interface and better compatibility with existing frameworks, but any code which has a choice should be using Source, particularly for simple file manipulation.
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Java - Method name collision in interface implementation
... no way to implement the same method in two different ways in one class in Java.
That can lead to many confusing situations, which is why Java has disallowed it.
interface ISomething {
void doSomething();
}
interface ISomething2 {
void doSomething();
}
class Impl implements ISomething, I...
Mockito match any class argument
...using the second version here. The first version did not cut it for me (on Java 8 that is).
– Patru
Apr 25 '19 at 8:18
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