Java ThreadSafe Example

 import java.util.Collections;
import java.util.HashSet;
import java.util.Set;



public class ThreadSafeExample {
	public static void main(String[] args) {
		Set set = new HashSet();
		set.add("Apple");
		set.add("Banana");
		set.add("Grapes");
		set.add("Mango");
		set.add("Strawberry");
		set.add("Orange");
		set.add("Papaya");
		Collections.synchronizedSet(set);
	}
}