autoboxing
Autoboxing versus manual boxing in Java
Why is the second piece of code faster? Map<Integer, Double> map = new HashMap<Integer, Double>();[详细]
2022-12-21 06:50 分类：问答Boxed Primitives and Equivalence
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);[详细]
2022-12-15 22:01 分类：问答Internal compiler error ArrayIndexOutOfBoundsException: -1 ... generateUnboxingConversion
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[详细]
2022-12-14 01:13 分类：问答Java auto boxing
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\"[详细]
2022-12-12 16:13 分类：问答Do autoboxing and unboxing behave differently in Java and C#
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[详细]
2022-12-08 20:09 分类：问答How can I properly compare two Integers in Java?
I know that if you compare a boxed primitive Integer with a constant such as: Integer a = 4; if (a < 5)[详细]
2022-12-08 03:44 分类：问答
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