ImagenInicio.java

/**
 *
 * @author santoslopez
 */

//Clase ImagenInicio, en su defecto va tener la imagen del semaforo en rojo

public class ImagenInicio extends javax.swing.JFrame {
    
    //patron de diseno singleton, creamos una unica instancia de la clase
    
    private static ImagenInicio instancia;
    
    public static ImagenInicio getInstancia(){
        if (instancia==null) {
            instancia=new ImagenInicio();
        }
        return instancia;
    }
    
    /**
     * Creates new form Semaforo
     */
    public ImagenInicio() {
        initComponents();
    }

    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
    private void initComponents() {

        lblColorSemaforo = new javax.swing.JLabel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("Semaforo");
        setModalExclusionType(java.awt.Dialog.ModalExclusionType.APPLICATION_EXCLUDE);

        lblColorSemaforo.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
        lblColorSemaforo.setIcon(new javax.swing.ImageIcon(getClass().getResource("/imagenes/rojo.png"))); // NOI18N
        lblColorSemaforo.setHorizontalTextPosition(javax.swing.SwingConstants.CENTER);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addGap(0, 0, 0)
                .addComponent(lblColorSemaforo, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(0, 0, 0)
                .addComponent(lblColorSemaforo, javax.swing.GroupLayout.DEFAULT_SIZE, 604, Short.MAX_VALUE)
                .addGap(0, 0, 0))
        );

        pack();
    }// </editor-fold>//GEN-END:initComponents

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(ImagenInicio.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(ImagenInicio.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(ImagenInicio.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(ImagenInicio.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new ImagenInicio().getInstancia().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify//GEN-BEGIN:variables
    public javax.swing.JLabel lblColorSemaforo;
    // End of variables declaration//GEN-END:variables
}