How to synchronize ArrayList in Java

by Online Tutorials Library July 22, 2022

How to Synchronize ArrayList in Java?

We can use Collections.synchronizedList(List<T>) method to synchronize collections in java. The synchronizedList(List<T>) method is used to return a synchronized (thread-safe) list backed by the specified list.

 import java.util.*; public class SyncronizeArrayList { public static void main(String args[]) { // Non Synchronized ArrayList  List<String> fruitList = new ArrayList<String>();  fruitList.add(“Mango”); fruitList.add(“Banana”); fruitList.add(“Apple”); fruitList.add(“Strawberry”); fruitList.add(“Pineapple”);  // Synchronizing ArrayList in Java furitList = Collections.synchronizedList(fruitList);  // we must use synchronize block to avoid non-deterministic behavior synchronized (fruitList) { Iterator<String> itr = fruitList.iterator(); while (itr.hasNext()) { System.out.println(itr.next()); } } } } 

Output:

Mango Banana Apple Strawberry Pineapple

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