помогите понять пожалуйста
package com.javarush.task.task07.task0709;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayList;
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
ArrayList<String> list = new ArrayList<String>();
for (int i = 0; i <5; i++)
{
String s = reader.readLine();
list.add(s);
}
String min = list.get(0);
for (int i = 0; i<5; i++) {
if (min.length() < list.get(i).length()) min = list.get(i);
System.out.println( list.get(i) );
}
}
}