问题描述
如果您有一组具有原始类型(例如字节、整数、字符等)的 Java 对象.有没有一种巧妙的方法可以将其转换为原始类型的数组?尤其是无需创建新数组并循环遍历内容即可完成此操作.
If you have an array of Java objects which have a primitive type (for example Byte, Integer, Char, etc). Is there a neat way I can convert it into an array of the primitive type? In particular can this be done without having to create a new array and loop through the contents.
例如,给定
Integer[] array
将其转换为最简洁的方法是什么
what is the neatest way to convert this into
int[] intArray
不幸的是,在 Hibernate 和一些我们无法控制的第三方库之间进行交互时,这是我们必须经常做的事情.这似乎是一个很常见的操作,所以如果没有捷径,我会感到惊讶.
Unfortunately, this is something we have to do quite frequently when interfacing between Hibernate and some third party libraries over which we have no control. It seems this would be a quite common operation so I would be surprised if there's no shortcut.
感谢您的帮助!
推荐答案
不幸的是,Java 平台中没有任何东西可以做到这一点.顺便说一句,您还需要显式处理 Integer[]
数组中的 null
元素(您将使用什么 int
来处理这些元素?).
Unfortunately, there's nothing in the Java platform that does this. Btw, you also need to explicitly handle null
elements in the Integer[]
array (what int
are you going to use for those?).
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