Convert ArrayList to Array

Convert ArrayList to Array

In this section, you will learn about converting ArrayList to Array.

Array is a data structure having fixed size which stores same type of elements in sequential manner. While ArrayList ,extends AbstractList and implements the List interface , supports dynamic array which can grow in size .

Situation comes when you have data in a ArrayList and you want to covert it into array. You can do this using toArray function as shown below :

import java.util.*;

public class ConvertListToArray {
	public static void main(String args[]) {
		List<String> statelist = new ArrayList<String>();
		
		statelist.add("UP");
		statelist.add("Bihar");
		statelist.add("Delhi");
		statelist.add("Kolkata");
		
		String [] states = statelist.toArray(new String[statelist.size()]);
		
		System.out.printf("States Array:\t\t%s", Arrays.toString(states));
	}
}

OUTPUT:

States Array:  [UP, Bihar, Delhi, Kolkata]