Swing Java Tutorial

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import javax.swing.JComboBox;
public class Main {
  public static void main(String[] argv) throws Exception {
    String[] items = { "item1", "item2" };
    JComboBox cb = new JComboBox(items);
    // Get current value
    Object obj = cb.getSelectedItem(); 
    // Set a new value
    cb.setSelectedItem("item2");
    obj = cb.getSelectedItem(); 
    // If the new value is not in the list of valid items, the call is ignored
    cb.setSelectedItem("item3");
    obj = cb.getSelectedItem(); 
  }
}