这个我不会做，求解答

import java.util.Arrays;
import java.util.Scanner;

class StudentBiz{
     String[] names=new String[5];
     int i=0;
     public void addName(String name){
         names[i]=name;
         i++;
     }
     public void showNames(){
         System.out.println(Arrays.toString(names));

     }
}


public class TestAdd {

    public static void main(String[] args) {
        StudentBiz st=new StudentBiz();
        Scanner input=new Scanner(System.in);
        for (int i = 0; i < 5; i++) {
            System.out.println("请输入学生姓名：");
            String newName=input.next();
            st.addName(newName);
        }
        st.showNames();
    }

}