public void btn(final JButton one) {
        one.setBackground(Color.decode("#01579B"));
        one.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseExited(java.awt.event.MouseEvent evt) {
                //     JOptionPane.showMessageDialog(null, 1);
                one.setBackground(Color.decode("#01579B"));
            }

        });