Iterate a List Using For-Each Loop in Java

A List is an ordered collection or an interface that contains elements of similar types. Since the list is a collection object, we can iterate (or loop) a list using different control flow statements or an Iterator object.

This article will discuss one way to (i.e., using forEach loop) iterate over a list:

Iterate over a List Using forEach Loop

A forEach loop is a control flow statement that helps to iterate (or loop through) over a collections object.

As the List is an ordered collection, it can be easily iterated using a forEach loop or any other control flow statements such as for and while loops.

Example 1

In the following example, we iterate over a List (instantiating using ArrayList class) using a forEach loop to print each element one by one of the List {1, 2, 3, 4, 5}:

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

public class iterateOverList {
   public static void main(String[] args) {
   
      //instantiating a List using ArrayList class
      List<Integer> list = new ArrayList<>();
      
      //adding element to it
      list.add(1);
      list.add(2);
      list.add(3);
      list.add(4);
      list.add(5);
      
      System.out.println("The list elements are: ");

      //iterate over a list using for-each loop
      for(Integer l: list){
         System.out.println(l + " ");
      }
   }
}

The above program produces the following output:

The list elements are: 
1 
2
3
4
5

Example 2

In the example below, we use the forEach loop to iterate over a List (instantiating using Stack Class) to print each of its elements one by one {"Apple", "Banana", "Orange", "Grapes"}:

import java.util.List;
import java.util.Stack;

public class iterateOverList {
   public static void main(String[] args) {

      //instantiating a List using Stack class
      List<String> fruits = new Stack<>();

      //adding element to it
      fruits.add("Apple");
      fruits.add("Banana");
      fruits.add("Orange");
      fruits.add("Grapes");

      System.out.println("The list elements are: ");
      
      //iterate over a vowels using for-each loop
      for(String f : fruits){
         System.out.println(f);
      }
   }
}

Following is the output of the above program:

The list elements are: 
Apple
Banana
Orange
Grapes