Exercicio 1 nomes

package nomes;

import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.HashSet;
import javax.swing.JFrame;
import javax.swing.JButton;
import javax.swing.JPanel;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.SwingConstants;

public class Nomes extends JFrame implements ActionListener{
    JButton btnTamanho, btnMaius, btnMinus, btnLimpar;
    JTextField texto;
    JLabel txtEntrada, txtTamanho, txtTam;
    public Nomes(){
        setLayout (new BorderLayout());
        btnTamanho = new JButton("tamanho");
        btnMaius = new JButton ("Maiusculo");
        btnMinus = new JButton ("Minusculo");
        btnLimpar = new JButton ("Limpar");
        JPanel sul = new JPanel (new GridLayout(2,2));
        sul.add(btnTamanho);
        sul.add(btnMaius);
        sul.add(btnMinus);
        sul.add(btnLimpar);
        add (sul, BorderLayout.SOUTH);
    }

    public void actionPerformed (ActionEvent e){
        if (e.getSource ()== btnLimpar){
            texto.setText("");
            textIam.setText("");

        }
    }

    public static void main (String [] args){
    Nomes tela = new Nomes ();
    tela.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    tela.setSize (350,250);
    tela.setLocation (500,300);
    tela.setVisible(true);




}

    @Override
    public void actionPerformed(ActionEvent e) {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }
}