List.toArray

List.toArray Method (Object[ ])

Copies and returns all the elements of a List object into a specific array object.

Package: java.util

Assembly: vjslib (in vjslib.dll)

public abstract java.lang.Object[] toArray(

    java.lang.Object[] arr);

Parameters

arr  

The array that receives the elements of the List object.

 Return Value

The array object that contains the elements of the List object.

 Example

In this example, you create and initialize a linked list object, and then you convert the list to an array "s". Then you copy "s" to a new array "s1" and display the elements of "s1."

// list-toArr2.jsl

// List.toArray example 

import java.util.*; 

public class MyClass{

    public static void main(String[] args){

        // Create a linked list object:

        LinkedList List =  new LinkedList(); 

 

        // Add some elements:

        List.add("My node");

        List.add("Her node");

        List.add("Their node");

        List.add("Your node"); 

 

        // Create an array from the list:

        String[] arr = new String[0]; 

 

        // Copy lList to arr:

        arr = (String[])List.toArray(arr); 

 

        // Display the new array elements:

        System.out.println("The array elements are:");

        for (int i=0; i<arr.length; i++){

            System.out.println(i + "=" + arr[i]);

        }

    }

}

 

/*

Output:

The array elements are:

0=My node

1=Her node

2=Their node

3=Your node

*/

 

Remarks

If arr is not large enough to hold the List members it will be expanded.

The type of List elements should match the type of the array elements.