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2018年5月18日—用equels()方法时,前面一定不能有null,不然会报空指针异常错误,因为null不是对象,不能调equels()方法,可能为null的对象要放到后面。,,TocheckifastringisequaltonullinJava,youcanusethe==operator.Hereisanexampleofhowyoucancheckifastringisn...
Null argument to Equals(object) - CodeQL
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Iftheobjectreallyisnull,aNullReferenceExceptionisthrownwhenattemptingtocallEquals,withunexpectedresults.Recommendation¶.Theoffendingcall ...
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