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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);
Object obj = cb.getSelectedItem();
cb.setSelectedItem("item2");
obj = cb.getSelectedItem();
cb.setSelectedItem("item3");
obj = cb.getSelectedItem();
}
}
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