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Java LinkedList toArray() Method

❮ LinkedList Methods


Example

Get an array from an LinkedList:

import java.util.LinkedList;

public class Main {
  public static void main(String[] args) {
    LinkedList cars = new LinkedList();
    cars.add("Volvo");
    cars.add("BMW");
    cars.add("Ford");
    cars.add("Mazda");
    
    Object[] carsArray = cars.toArray();
    
    for(Object item : carsArray) {
      System.out.println(item);
    }
  }
}

Try it Yourself »


Definition and Usage

The toArray() method returns an array containing all of the items in the list.

If no argument is passed then the type of the returned array will be Object. If an array is passed as an argument then this method will return an array with the same data type.

If the array in the argument is large enough to contain all of the list items then this method will return the argument itself after writing the list items into it.


Syntax

One of the following:

public Object[] toArray()
public T[] toArray(T[] array)

T refers to the data type of items in the list.

Parameter Values

Parameter Description
array Optional. An array which specifies the data type of the returned array and will be returned by the method if it has enough space for the items in the list. If the array is not large enough then the method returns a new array of the same data type.

Technical Details

Returns: An array containing all of the elements of the LinkedList in order.
Throws: ArrayStoreException - If the type of the array is not compatible with the type of the LinkedList.
NullPointerException - If the argument is null.

More Examples

Example

Specify the return type of toArray():

import java.util.LinkedList;

public class Main {
  public static void main(String[] args) {
    LinkedList<String> cars = new LinkedList<String>();
    cars.add("Volvo");
    cars.add("BMW");
    cars.add("Ford");
    cars.add("Mazda");
    
    String[] carsArray = new String[4];
    carsArray = cars.toArray(carsArray);
    
    for(String item : carsArray) {
      System.out.println(item);
    }
  }
}

Try it Yourself »


Related Pages

Java Arrays Tutorial

Java LinkedList Tutorial


❮ LinkedList Methods
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