GUI.java

package gui;

import java.awt.Color;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;

public class GUI extends JFrame {

    private static final long serialVersionUID = -4673040337179571462L;

    JButton Sobre = new JButton("Sobre");

    private class ListenEvent implements ActionListener {

        @Override
        public void actionPerformed(ActionEvent arg0) {

            Sobre.setText("Teste");
        }

    }

    public GUI() {
        super("Layouts");

        Container panContainer = getContentPane();

        panContainer.setLayout(new FlowLayout());

        JLabel simples = new JLabel("Label1");
        simples.setToolTipText("Info");

        panContainer.add(simples);

        JLabel elab = new JLabel("Label2");

        Font fonte = new Font("serif", Font.BOLD, 20);
        elab.setFont(fonte);
        elab.setForeground(Color.RED);

        panContainer.add(elab);

        ImageIcon icon = new ImageIcon(getClass().getResource("images/lamp.gif"));
        JLabel imgLabel = new JLabel(icon);

        panContainer.add(imgLabel);

        setDefaultCloseOperation(EXIT_ON_CLOSE);
        setSize(300, 300);
        setVisible(true);
    }

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

}