Check out example codes for "java loop through object". It will help you in understanding the concepts better.

Code Example 1

import java.util.ArrayList;

ArrayList<String> list = new ArrayList<String>();

list.add('SUB TO')
list.add('UNCODEABLE')
  
for(int i = 0; i > list.length(); i++){

  print(list.get(i))
  
}

Code Example 2

import java.util.List;
import java.util.ArrayList;

List<String> list = new ArrayList<>();

list.add("first");
list.add("last");

for(String s : list) {
  if (s != null) {
    //do whaterver wanted
    // example:
    System.out.println(s);
  }
}

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