toArray() Method : Java.util.ArrayList

Declaration :

public <T> T[] toArray(T[] arr)

1	public <T> T[] toArray(T[] arr)

Explanation :

Purpose	Method returns an array having all the elements in this list in sequence.
Parameters	arr ==> Array into which the elements of the list are to be stored
Return Value	Array containing the elements of the list
Exception	ArrayStoreException ==> If the runtime type of the specified array is not a supertype of the runtime type of every element in this list
	NullPointerException ==> If the specified array is null

Example

The following example shows the usage of java.util.Arraylist.toArray(E) method.

package com.c4learn.arraylist;
import java.util.ArrayList;
public class ArrayListExamples {
  public static void main(String args[]) {
    // Create ArrayList 1
    ArrayList<String> arrlist1 = new ArrayList<String>(5);
    // Fill Elements in ArrayList 1
    arrlist1.add("A");
    arrlist1.add("B");
    arrlist1.add("C");
    // Create String Array
    String arr[] = new String[arrlist1.size()];
    arr = arrlist1.toArray(arr);
    // Print ArrayList
    for (String str : arr) {
      System.out.println("List Element : " + str);
    }
  }
}

package com.c4learn.arraylist;

import java.util.ArrayList;

public class ArrayListExamples {

public static void main(String args[]) {

// Create ArrayList 1

ArrayList<String> arrlist1 = new ArrayList<String>(5);

// Fill Elements in ArrayList 1

arrlist1.add("A");

arrlist1.add("B");

arrlist1.add("C");

// Create String Array

String arr[] = new String[arrlist1.size()];

arr = arrlist1.toArray(arr);

// Print ArrayList

for (String str : arr) {

System.out.println("List Element : " + str);

}

Output :

List Element : A
List Element : B
List Element : C

List Element : A

List Element : B

List Element : C

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