显示/打印null值是否会导致NullPointerException
[英]Does displaying/printing a null value cause NullPointerException
问题描述
Does displaying/printing a null value cause NullPointerException or does only trying to manipulate it? 
显示/打印null值是否会导致NullPointerException或仅尝试对其进行操作？
If I had an array A and an array B which was twice the size of A . 如果我有一个数组A和一个数组B ，其大小是A两倍。 If I copied all the elements from A into B using 如果我使用将所有元素从A复制到B
Arrays.copyOf(A, 2*A.length)
When I print B using Arrays.toString(B) , it happily prints out even null values without throwing any exceptions. 当我使用Arrays.toString(B)打印B ，它愉快地打印出了null值，而没有Arrays.toString(B)任何异常。
1 个解决方案
解决方案1
3 2015-03-09 18:36:20
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