How to make a collection thread safe in java?

The Collections class of java.util package methods that exclusively work on collections these methods provide various additional operations which involves polymorphic algorithms.

This class provides different variants of the synchronizedCollection() method as shown below −

Example

 Live Demo

import java.util.Collection;
import java.util.Collections;
import java.util.Vector;
public class CollectionReadOnly {
   public static void main(String[] args) {
      //Instantiating an ArrayList object
      Vector<String> vector = new Vector<String>();
      vector.add("JavaFx");
      vector.add("Java");
      vector.add("WebGL");
      vector.add("OpenCV");
      System.out.println(vector);
      Collection<String> synchronizedVector = Collections.synchronizedCollection(vector);
      System.out.println("Synchronized "+synchronizedVector);
      synchronizedVector.add("CoffeeScript");
   }
}

Output

[JavaFx, Java, WebGL, OpenCV]
Synchronized [JavaFx, Java, WebGL, OpenCV]