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Convert List To Array In Java

Last Updated : Jul 1, 2023

Convert List To Array In Java

In this article we will show you the solution of convert list to array in java, the List interface can be used to store an ordered collection. Instances of this interface are children of Collection.

A duplicate value can be stored in an ordered collection of objects. Due to its preservation of insertion order, a List allows elements to be inserted and accessed positionally.

In this case, we have been given a list of strings, which can be either a linked list or an array list of strings, and we are going to convert the list to an array of strings in Java by using various methods.

To insert all elements in an array one by one, we can use the following list method.

  • The get() method can be used
  • The toArray() method can be used
  • In Java 8, Streams were introduced
  • The first method is to use the get() method

One of the most popular collection interfaces is the List, which stores ordered collections.

It is possible to store duplicate values as well as the insertion order of elements using the List interface Arrays can be created by converting a list to an array.

As a result, the elements in the list are accessed one by one and added to an array in this way.

A list can also be converted into an array this way. Array elements are returned in the same order as list items.

As a result of toArray(), an array containing all elements in the list is returned either as a parameter or without one.

A List object can be converted to an array by using the following :

  • The List object needs to be created.
  • Make it more interesting by adding elements.

The size of the created ArrayList should be placed in an empty array.

Step By Step Guide On Convert List To Array In Java :-

import java.util
public class list {
   public static void main(String args[]){
      ArrayList<String> list = new ArrayList<String>();
      list.add("Pink");
      list.add("Yellow");
      list.add("Skyblue");
      System.out.println("Contents of list ::"+list);
      String[] Array = new String[list.size()];
      list.toArray(Array);
      for(int i=0; i<Array.length; i++){
         System.out.println("Element at the index "+i+" is ::"+Array[i]);
      }
   }
}
  1. Let's start by importing Java. util function.
  2. In order to execute a program, we must create a class.
  3. Then the program is initialized by creating a public static void main.
  4. Arraylists are created and initialized by adding each object one by one.
  5. Our next step is to define integer values
  6. In the next step, system.out.printIn is used to close the program.

Conclusion :-

The List interface can be used to store an ordered collection.Instances of this interface are children of Collection.

A duplicate value can be stored in an ordered collection of objects.

Due to its preservation of insertion order, a List allows elements to be inserted and accessed positionally.

I hope this article on convert list to array in java helps you and the steps and method mentioned above are easy to follow and implement.