Why is the second piece of code faster? Map<Integer, Double> map = new HashMap<Integer, Double>();
So I was asked this question today. Integer a = 3; Integer b = 2; Integer c = 5; Integer d = a + b; System.out.println(c == d);
I got some weird exception when trying to compile this: Byte b = 2; if (b < new Integer(5)) { ... } Is it开发者_如何学C a valid check (unboxing-implicit cast - unboxing)?If there is a bug in you
I switched a project I\'m working on over to maven and suddenly auto boxing seems to have broken. My IDE (NetBeans) complains on lines such as the one below with the error \"Incompatible types\"
I am manually converting code from Java (1.6) to C# and finding some difficulty with the behaviour of primitives (int and double). In C# it appears that almost all conversions happen automatically
I know that if you compare a boxed primitive Integer with a constant such as: Integer a = 4; if (a < 5)
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