Test if a List is an Unmodifable List in Java

import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
public class Demo {
	public static void main(String[] args) {
		List<Integer>list = new LinkedList<Integer>();
		list.add(10);
		list.add(20);
		list.add(30);
		list.add(40);
		list.add(50);
		List<Integer>unmodifiable = Collections.unmodifiableList(list);
		if (unmodifiable.getClass().getName().contains("UnmodifiableList"))
			System.out.println("This is an UnmodifiableList" );
		else
			System.out.println("This is not an UnmodifiableList" );
	}
}