package test；
class Target{
public String name="hello"；
}
What can directly access and change the value of the variable name？（）

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”？（）