How to convert ArrayList to Array and Array to ArrayList in Java

by Online Tutorials Library July 22, 2022

How to convert ArrayList to Array and Array to ArrayList in java?

Let’s see a simple example to convert ArrayList to Array and Array to ArrayList in Java:

 public class LengthVsSizeArrayList { public static void main(String[] args) { //creating Arraylist List<String> fruitList = new ArrayList<>(); //adding String Objects to fruitsList ArrayList fruitList.add(“Mango”); fruitList.add(“Banana”); fruitList.add(“Apple”); fruitList.add(“Strawberry”); fruitList.add(“Pineapple”); System.out.println(“Converting ArrayList to Array” ); String[] item = fruitList.toArray(new String[fruitList.size()]); for(String s : item){ System.out.println(s); } System.out.println(“Converting Array to ArrayList” ); List<String>l2 = new ArrayList<>(); l2 =  Arrays.asList(item); System.out.println(l2); } } 

Output:

Converting ArrayList to Array Mango Banana Apple Strawberry Pineapple Converting Array to ArrayList [Mango, Banana, Apple, Strawberry, Pineapple]

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