import java.util.ArrayList;

public class Remove2
{
    public static void main(String[] args)
    {
        ArrayList<String> myList = new ArrayList<>();
        
        myList.add("john"); 
        myList.add("peter"); // Index 1
        myList.add("mary"); 
        myList.add("peter");

        System.out.println( myList ); // [john,peter,mary,peter]

        System.out.println( myList.remove("peter") ); // true
        System.out.println( myList ); // [john,Amary,peter]
    }
}