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Java语法的条件编译,是通过判断条件为常量的if语句实现的。其原理是Java语言的语法糖,根据if判断条件的真假,编译器直接把分支为false的代码块消除。通过该方式实现的条件编译,必须在方法体内实现,而无法在正整个Java类的结构或者类的属性上进行条件编译,这与C/C++的条件编译相比,确实更有局限性。在Java语言设计之初并没有引入条件编译的功能,虽有局限,但是总比没有更强。

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asked 06 Jun, 12:11

%E8%B7%AF%E4%BA%BA%E7%94%B2's gravatar image

路人甲
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question asked: 06 Jun, 12:11

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