The toArray(T[]) method of AbstractSequentialList in Java

Java 8Object Oriented ProgrammingProgramming

The difference between toArray() and toArray(T[] arr) is that both the methods returns an array containing all of the elements in this collection, but the latter has some additional features i.e. the runtime type of the returned array is that of the specified array.

The syntax is as follows:

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

Here, arr is the array into which the elements of this collection are to be stored,

To work with the AbstractSequentialList class in Java, you need to import the following package:

import java.util.AbstractSequentialList;

The following is an example to implement AbstractSequentialList toArray() method in Java:

Example

 Live Demo

import java.util.LinkedList;
import java.util.AbstractSequentialList;
public class Demo {
   public static void main(String[] args) {
      AbstractSequentialList<Integer> absSequential = new LinkedList<>();
      absSequential.add(210);
      absSequential.add(290);
      absSequential.add(350);
      absSequential.add(490);
      absSequential.add(540);
      absSequential.add(670);
      absSequential.add(870);
      System.out.println("Elements in the AbstractSequentialList = "+absSequential);
      Integer[] strArr = new Integer[5];
      strArr = absSequential.toArray(strArr);
      System.out.println("Array = ");
      for (int i = 0; i < strArr.length; i++)
      System.out.println(strArr[i]); ;
   }
}

Output

Elements in the AbstractSequentialList = [210, 290, 350, 490, 540, 670, 870]
Array =
210
290
350
490
540
670
870

Let us see another example wherein we have the array size more than the total number of elements:

Example

 Live Demo

import java.util.LinkedList;
import java.util.AbstractSequentialList;
public class Demo {
   public static void main(String[] args) {
      AbstractSequentialList<Integer> absSequential = new LinkedList<>();
      absSequential.add(210);
      absSequential.add(290);
      absSequential.add(350);
      absSequential.add(490);
      System.out.println("Elements in the AbstractSequentialList = "+absSequential);
      Integer[] strArr = new Integer[7];
      strArr = absSequential.toArray(strArr);
      System.out.println("Array = ");
      for (int i = 0; i < strArr.length; i++)
      System.out.println(strArr[i]); ;
   }
}

Output

Elements in the AbstractSequentialList = [210, 290, 350, 490]
Array =
210
290
350
490
null
null
null
raja
Updated on 30-Jul-2019 22:30:25

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