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2下面程序段的输出结果是( )。class Base{ int i; Base() { add(1); } void add(int v) { i+=v; } void print0 { System.out.println(i); }}class Extension extends Base{ Extension() { add(2); } void add(int v) { i+=v*2; }}public class Test{ public static void main(String args[]) { bogo(new Extension()); } static void bogo(Base b) { b.add(8); b.print(); }}

单选题
2021-12-31 23:50
A、9
B、18
C、20
D、22
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正确答案
D

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