一般采用三种方法:
1.Arrays.copyOfRange(T[] original, int from, int to)
@param original the array from which a range is to be copied
@param from the initial index of the range to be copied, inclusive
@param to the final index of the range to be copied, exclusive.
2.Arrays.copyOf(T[] original, int newLength)
* @param original the array to be copied
* @param newLength the length of the copy to be returned
* @return a copy of the original array, truncated or padded with zeros
* to obtain the specified length
3.System.arraycopy(Object src, int srcPos, Object dest, int destPos, int length)
@param src the source array.
* @param srcPos starting position in the source array.
* @param dest the destination array.
* @param destPos starting position in the destination data.
* @param length the number of array elements to be copied.
本文详细介绍了Java中Arrays类提供的三种关键方法:copyOfRange()用于复制数组片段,copyOf()创建指定长度的新数组,arrayCopy()用于元素级的数组拷贝。通过实例演示,帮助理解这些在数组操作中的核心技巧。
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