Adding items to a jComboBox

What is the preferred way of adding new items to a jComboBox? I am learning to use Swing and the NetBeans IDE. When coding Swing from scratch, you can add new items in the jComboBox's constructor. However, when I let NetBeans create the code for me, this is in a guarded block and I cannot edit it. By default { "Item 1", "Item 2", "Item 3", "Item 4" } are added to the combobox. The workaround I'm using is to removeAllItems() when the window is first activated. Then add my own items to the list.

Code:

---

    private void formWindowActivated(java.awt.event.WindowEvent evt) {                                   
        jComboBox1.removeAllItems();
        jComboBox1.addItem("red");
        jComboBox1.addItem("blue");
        jComboBox1.addItem("green");
        jComboBox1.addItem("yellow");
    }

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Is there a better way of accomplishing this?

Thanks
--Donovan