import java.util.ArrayList;
import java.util.Collection;

public class CollectionInterfaceRemoveAllMethod {

public static void main(String[] args) {
  Collection collection = new ArrayList();
  collection.add("India");
  collection.add("Shrilanka");
  collection.add("Pakistan");
    
  boolean result = collection.removeAll(collection);  
  if(result==true){
	  System.out.print("All Elements Remove.");		      
  }
  else{
	  System.out.print("All Elements Not Remove.");
  }	      	      
 }
}