How to iterate a List using for-Each Loop in Java?

JavaObject Oriented ProgrammingProgramming

The List interface extends Collection interface and is an important member of Java Collections Framework. List interface declares the behavior of a collection that stores a sequence of elements. The most popular implementation of List interface is ArrayList. User of a list has quite precise control over where an element to be inserted in the List. These elements are accessible by their index and are searchable.

A forEach loop helps in iterating an array or collection of objects. As List contains objects, it can be easily iterated using forEach loop. Following code snippet shows how to use a forEach loop to iterate a list.

for (Integer integer : list) {
   System.out.print(integer + " ");
}

List interface also provides a forEach() method which can be used to iterate the list as shown below −

list.forEach(i -> {System.out.print(i + " ");});

Example 1

Following is the example showing forEach loop to iterate the list −

package com.tutorialspoint;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class CollectionsDemo {
   public static void main(String[] args) {
      List<String> list = new ArrayList<>(Arrays.asList("A", "B", "C"));
      for (String string : list) {
         System.out.print(string + " ");
      }
   }
}

Output

This will produce the following result −

A B C

Example 2

Following is the example showing List.forEach method to iterate the list −

package com.tutorialspoint;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class CollectionsDemo {
   public static void main(String[] args) {
      List<String> list = new ArrayList<>(Arrays.asList("A", "B", "C"));
      list.forEach(i -> {System.out.print(i + " ");});
   }
}

Output

This will produce the following result −

A B C
raja
Updated on 26-May-2022 13:22:01

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