import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import javax.swing.JTextField;

/**
 *
 * @author Professor
 */
public class Nomes {

    static void janela() {
        String[] nomes = new String[7];

        JFrame j = new JFrame("LISTA NOMES");
        j.setSize(400, 400);
        j.setLocationRelativeTo(j);
        j.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        j.setResizable(false);
        JPanel p = new JPanel();

        GridLayout layout = new GridLayout(0, 2, 30, 30);
        p.setLayout(layout);

        JLabel jlbNome = new JLabel("Digite o nome:");
        jlbNome.setHorizontalAlignment(JLabel.RIGHT);
        jlbNome.setHorizontalTextPosition(JLabel.RIGHT);

        JTextField jtxNome = new JTextField();
        jtxNome.setPreferredSize(new Dimension(50, 24));

        

        JButton jbtAdicionar = new JButton("Adicionar nomes");
        JButton jBtMostrar = new JButton("Mostrar nomes");
        jBtMostrar.setBounds(50, 100, 95, 30);
        jbtAdicionar.setBounds(50, 100, 95, 30);
        
        jbtAdicionar.addActionListener(new ActionListener() {
        Integer i = 0;    
            public void actionPerformed(ActionEvent ae) {
                
                nomes[i]= jtxNome.getText();
                jtxNome.setText("");
                
                i= i+1;
                if (i==7) { jtxNome.setEnabled(false);
                } else { jtxNome.grabFocus(); }
            }
        });

        jBtMostrar.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent ae) {
                
        JDialog d = new JDialog(j, "NOMES");
        JTextArea jtArea = new JTextArea("NOMES");
        jtArea.setSize(new Dimension(50, 150));
        
        
                String nomesT="";
                for (int i = nomes.length-1; i >=0; i--) {
                    //System.out.println(nomes[i]);
                    nomesT = nomesT + nomes[i] +"\n";
                }
                jtArea.setText(nomesT);
            
        d.add(jtArea);
        d.setSize(200, 150);
        d.setResizable(false);
        d.setLocationRelativeTo(j);
        d.setVisible(true);
            }
        });

        p.add(jlbNome);
        p.add(jtxNome);
        

        p.add(jbtAdicionar);
        p.add(jBtMostrar);

        p.setAutoscrolls(true);
        p.setPreferredSize(new Dimension(300, 200));

        j.add(p);
        j.pack();

        j.setVisible(true);
    }

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