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How to write a UTF-8 file with Java?
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If you read the Java docs on the link shown in the question, then it tells you the version of the Commons IO API where the write APIs were introduced. It looks like the write APIs were introduced from v2.0 onwards.
– A_...
Finding Key associated with max Value in a Java Map
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Would Java 8 streams usage help in simplifying this anymore? e.x: map.forEach((k,v) -> ...
– zkarthik
Dec 24 '14 at 17:04
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Regular expression for floating point numbers
.... and [0-9] instead of \d to avoid escaping issues in some languages (like Java).
Thanks to the nameless one for originally recognizing this.
One relatively simple pattern for matching a floating point number is
[+-]?([0-9]*[.])?[0-9]+
This will match:
123
123.456
.456
See a working exampl...
Does .asSet(…) exist in any API?
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Now with Java 8 you can do this without need of third-party framework:
Set<String> set = Stream.of("a","b","c").collect(Collectors.toSet());
See Collectors.
Enjoy!
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Simple explanation of clojure protocols
...but fail in one way or another: Interfaces and Extension Methods in C# and Java, Monkeypatching in Ruby, Python, ECMAScript.
Note that Clojure actually already has a mechanism for solving the Expression Problem: Multimethods. The problem that OO has with the EP is that they bundle operations and ty...
Is there a way to get rid of accents and convert a whole string to regular letters?
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Use java.text.Normalizer to handle this for you.
string = Normalizer.normalize(string, Normalizer.Form.NFD);
// or Normalizer.Form.NFKD for a more "compatable" deconstruction
This will separate all of the accent marks from th...
Default value of 'boolean' and 'Boolean' in Java
...fault values of boolean (primitive) and Boolean (primitive wrapper) in Java?
8 Answers
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Android Crop Center of Bitmap
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E/AndroidRuntime(30010): Caused by: java.lang.IllegalArgumentException: x + width must be <= bitmap.width() and this because of 4 times 100px
– Stan
Jul 14 '13 at 15:03
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How to make System.out.println() shorter
...pets" plugin for your favorite text editor/IDE
Static Import
import static java.lang.System.out;
out.println("Hello World");
Explore JVM languages
Scala
println("Hello, World!")
Groovy
println "Hello, World!"
Jython
print "Hello, World!"
JRuby
puts "Hello, World!"
Clojure
(println "Hello, W...
How do I make a delay in Java?
I am trying to do something in Java and I need something to wait / delay for an amount of seconds in a while loop.
8 Answer...