How could this reference to a string be causing a Null reference Exception?

这怎么能参考字符串会引起空引用异常？

youdao

Finally, say goodbye to the dull, everyday drudgery of null reference exceptions.

最后，告别那些处理空引用异常的枯燥差事吧。

youdao

It is reflexive: for any non-null reference value x, x.equals (x) should return true.

具有反射性：对于任何非空的参考值x,x.e quals (x)应该返回真值。

youdao

It is reflexive: for any non-null reference value x, x.equals (x) should return true.

具有反射性：对于任何非空的参考值x,x.e quals (x)应该返回真值。

youdao