How to synchronize List

List is non-synchronized in Java. So to perform thread-safe operations,you must synchronize List.

There are two ways.

   1. Synchronizing the list explicitly. 
   2. Use 'Collections.synchronizedList' method.

import java.util.*;

public class ListEx {
    public static void main(String args[]){
        List<Integer> myList = Collections.synchronizedList(new ArrayList<>());
        
        myList.add(10);
        myList.add(20);
        myList.add(30);
        
        System.out.println(myList);
    }
}

Output

[10, 20, 30]

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