Raw Type ComboBox

I am having this problem with my ComboBox. I’m trying to add an ENUM list to the ComboBox but it comes up with The method setModel(ComboBoxModel) belongs to the raw type JComboBox. References to generic type JComboBox<E> should be parameterized. Below is my ComboBox code:

JComboBox comboBox = new JComboBox();
comboBox.setModel(new DefaultComboBoxModel(Rating.values()));
comboBox.setBounds(90, 58, 110, 20);
frame.getContentPane().add(comboBox);

Here is my ENUM:

public enum Rating {

ONE{
          public String toString() {
          return "One";
    }},

TWO{
      public String toString() {
          return "Two";
    }},
THREE{
      public String toString() {
          return "Three";
    }},
FOUR{
      public String toString() {
          return "Four";
    }},
FIVE{
      public String toString() {
          return "Five";
    }},
SIX{
      public String toString() {
          return "Six";
    }},
SEVEN{
      public String toString() {
          return "Seven";
    }},
EIGHT{
      public String toString() {
          return "Eight";
    }},
NINE{
      public String toString() {
          return "Nine";
    }},
TEN{
      public String toString() {
          return "Ten";
    }};


}

I have tried fixing it by making JComboBox to be parameterized but I have had no luck in doing so.
Thanks for any help