import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import javax.swing.event.*;

public class Exemplo_JComboBox extends JFrame implements ActionListener
{
	    JComboBox Combo = new JComboBox();
	    public Exemplo_JComboBox()
    	{
    			setLayout(new FlowLayout());
    			add(new JLabel("SELECIONE UM ESTADO"));
    			add(Combo);
    			Combo.addItem("AC - ACRE");
    			Combo.addItem("AM - AMAZONAS");
    			Combo.addItem("AP - AMAPA");
    			Combo.addItem("RJ - RIO DE JANEIRO");
    			Combo.addItem("MT - MATO GROSSO");
    			Combo.addItem("SC - SANTA CATARINA");
    			Combo.addItem("RS - RIO GRANDE DO SUL");
    			Combo.addItem("AL - ALAGOAS");
    			Combo.addItem("CE - CEARÁ");
    			Combo.addItem("PR - PARANA");
    			Combo.addItem("SP - SÃO PAULO");
         		Combo.setSelectedItem("PR - PARANA");

    			setTitle("OXNAR - AULA SOBRE JCOMBOBOX");
    			setSize(400, 400);
    			setLocationRelativeTo(null);
    			setVisible(true);

		}
		public void actionPerformed (ActionEvent e)
		{

		}
		public static void main (String args [])
		{
				new Exemplo_JComboBox();
		}
}