Java - Browsing an ArrayList with the for-each loop

We saw how to do the scan in an ArrayList. In this tutorial, we'll learn how to browse ArrayList with the advanced for loop abbreviated as for-each.

import java.util.ArrayList; 
import java.util.Collections; 
import java.util.Enumeration; 
import java.util.Iterator; 

public class parcourslist {

 public static void main(String[] args) {
 
 ArrayList< String> list = new ArrayList< String> (); 
 list.add("o1"); 
 list.add("22"); 
 list.add("o3"); 
 
 for(String s : list)
 System.out.println(s); 
 }
}

o1
o2
o3

The for-each loop throws an error if the ArrayList to be browsed does not have a generic type. For example, we'll remove the genericity in ArrayList:

ArrayList list = new ArrayList(); 

The java compiler considers that the elements of our ArrayList are objects without any type and that it cannot convert them to String: