import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class MainClass {
public static void main(String[] args) {
List list = new ArrayList();
for (int i = 0; i < 10; i++)
list.add("");
Collections.fill(list, "Hello");
System.out.println(list);
}
}
//
[Hello, Hello, Hello, Hello, Hello, Hello, Hello, Hello, Hello, Hello]