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全部科目 > Java认证考试 > Java认证考试综合练习

单项选择题

Given a class Repetition:
1.package utils;
2.
3.public class Repetition{
4.public static String twice(Strings){returns+s;}
5.}
and given another class Demo:
1.//insert code here2.
3.public class Demo{
4.public static void main(String[]args){
5.System.out.println(twice("pizza"));
6.}
7.}
Which code should be inserted at line 1 of Demo.java to compile and run Demo to print“pizzapizza”?()

    A.import utils.*;
    B.static import utils.*;
    C.importutils.Repetition.*;
    D.static importutils.Repetition.*;
    E.import utils.Repetition.twice();
    F.import static utils.Repetition.twice;
    G.static import utils.Repetition.twice;

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