将Long []转换为long []（原始）java [英] convert Long[] to long[] (primitive) java

问题描述

如何将Long []转换为long []？例如，我知道如果它不是数组如下转换如下。

How do i convert Long[] to long[]? For example i know how to convert if it is not array as below.

long ll = (Long)Object[1].longValue()

但我如何转换为数组，下面是不对的但是任何人都可以更正它？

But how do i convert for an array, the below is not right but can anyone correct it?

long[] l_ar = (Long[])Object[]  

推荐答案

感谢大家的回答;我只是粘贴了我最终选择的解决方案。

Thanks for everyone's answer; I am just pasting my final chosen solution.

List<Long> longObjects = new ArrayList<Long>();

long[] longArray2 = ArrayUtils.toPrimitive(longObjects.toArray(new Long[longObjects.size()]));

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