import java.util.List;
import java.util.ArrayList;
import java.util.Iterator;

public class Gen {

    public static void main(String[] args) {
        List<String> liste = new ArrayList<>();
        liste.add("test");
        // liste.add(1);   // incompatible types: int cannot be converted to String
        for (String s : liste) {
            System.out.println(s);
        }
    }
}