Using foreach method with list in Java 8

This blog post is about using foreach method with list in Java 8. Foreach method can be used to easily iterate a list.

Check my previous post to see how to iterate foreach method with map in Java 8.

The program to iterate list using foreach method is as follows:

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

/*
 * Java program to demonstrate the use of forEach method in List
 */
public class ForEachList {
 public static void main(String[] args) {
  
   List<String> usStates = new ArrayList<>();
   
         usStates.add("California");
         usStates.add("New York");
         usStates.add("New Mexico");
         usStates.add("Pennsylvania");
         usStates.add("New Jersey");
         
         // iterating the List through normal method
         System.out.println("***Iterating the list through normal method***\n"); 
         for (String states:usStates) {
          
          System.out.println(states);
         }
  
         // iterating the List through foreach method using lambda expression
         System.out.println("\n\n***Iterating the list through foreach method using lambda expression***\n"); 
         usStates.forEach(states->System.out.println(states));
         
         System.out.println();
         
      // iterating the List through foreach method using method reference
         System.out.println("\n\n***Iterating the list through foreach method reference***\n"); 
         usStates.forEach(System.out::println);
        
         // iterating the List through foreach method using lambda expression with a condition
         System.out.println("\n\n***Iterating the list through foreach method using lambda expression with a condition***\n"); 
         usStates.forEach(states->
         {
          //We are trying to print states which contains the word "New"
          if(states.contains("New"))
          {
           System.out.println(states);
          }
         });
  
 }

}

The output of this program is as follows:

***Iterating the list through normal method***

California
New York
New Mexico
Pennsylvania
New Jersey


***Iterating the list through foreach method using lambda expression***

California
New York
New Mexico
Pennsylvania
New Jersey



***Iterating the list through foreach method reference***

California
New York
New Mexico
Pennsylvania
New Jersey


***Iterating the list through foreach method using lambda expression with a condition***

New York
New Mexico
New Jersey

Please comment below if there is any questions.

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