Java Program to Iterate an ArrayList

Iterate arraylist in java – Java Program to Iterate an ArrayList

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Iterate arraylist in java: In this article, we will see how to iterate an ArrayList in Java programming language.

Java Program to Iterate an ArrayList

Java iterate arraylist: We can iterate an ArrayList by different ways. Let’s see one by one.

Method-1: Java Program to Iterate an ArrayList By Using ForEach Loop

Approach:

  1. Create a String ArrayList say  list and add elements into it.
  2. Traverse the list using ForEach Loop and print the elements one by one.

Program:

import java.util.*;  
  public class Main 
  {  
   public static void main(String args[])
   {  

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

  // Adding elements into the list
  list.add("Queen");   
  list.add("King");    
  list.add("Ace");    
  list.add("Joker");  
  
  //Traversing list through for-each loop  
    System.out.println("Cards in the list are :");   
  for(String cards:list)  
  {  
    System.out.println(cards);
  }
  
 }  
} 
  

Output:

Cards in the list are :
Queen
King
Ace
Joker

Method-2: Java Program to Iterate an ArrayList By Using For Loop

Approach:

  1. Create a String ArrayList say  list and add elements into it.
  2. Traverse the list using For Loop and print the elements one by one.

Program:

import java.util.*;  
  public class Main 
  {  
    public static void main(String args[])
    {  

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

      // Adding elements into the list
      list.add("Queen");   
      list.add("King");    
      list.add("Ace");    
      list.add("Joker");  
      
      //Traversing list through for loop  
      System.out.println("Cards in the list are :");   
      for (int i = 0; i< list.size();i++)
      {  
        System.out.println(list.get(i));
      }
    }  
} 
  

Output:

Cards in the list are :
Queen
King
Ace
Joker

Method-3: Java Program to Iterate an ArrayList By Using While Loop

Approach:

  1. Create a String ArrayList say  list and add elements into it.
  2. Traverse the list using While Loop and print the elements one by one.

Program:

import java.util.*;  
  public class Main 
  {  
    public static void main(String args[])
    {  

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

      // Adding elements into the list
      list.add("Queen");   
      list.add("King");    
      list.add("Ace");    
      list.add("Joker");  
      
      //Traversing list through while loop  
      System.out.println("Cards in the list are :");   
      int items = 0;
      while (items < list.size()) 
        {
        System.out.println(list.get(items));
        items++;
        }

    }  
} 
  

Output:

Cards in the list are :
Queen
King
Ace
Joker

Method-4: Java Program to Iterate an ArrayList By Using Iterator Loop

Approach:

  1. Create a String ArrayList say  list and add elements into it.
  2. Traverse the list using iterator  and print the elements one by one.

Program:

import java.util.*;  
  public class Main 
  {  
    public static void main(String args[])
    {  

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

      // Adding elements into the list
      list.add("Queen");   
      list.add("King");    
      list.add("Ace");    
      list.add("Joker");  
      
      //Traversing list through iterator loop  
      System.out.println("Cards in the list are :");   
      Iterator iterator = list.iterator();
      while (iterator.hasNext()) 
      {
         System.out.println(iterator.next());
      }
    }  
} 
  

Output:

Cards in the list are :
Queen
King
Ace
Joker

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