public static void main(String[] arguments) { String str="null"; if(str==null){ System.out.println("null"); }else(str.length()==0){ System.out.println("zero"); }else{ System.out.println("some"); } }
哪个是程序的结果
(A)null
(B)zero
(C)some
(D)编译错误
(E)运行错误
D