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单选题
public static void main(String[]args){ String str="null"; if(str==null){ System.out.println("null"); }else(str.length()==0){ System.out.println("zero"); }else{ System.out.println("some"); } } What is the result?()
A

null

B

zero

C

some

D

Compilationfails.

E

Anexceptionisthrownatruntime.


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