LimparCampos

public void LimparCampos(Container cont){
      for (int i=0; i < cont.getComponentCount(); i++){
          if (cont.getComponent(i) instanceof JTextField){
              JTextField text = (JTextField)cont.getComponent(i);
              text.setText("");
          } else if (cont.getComponent(i) instanceof JTextArea){
              JTextArea txtarea = (JTextArea)cont.getComponent(i);
              txtarea.setText("");
          } else if (cont.getComponent(i) instanceof JComboBox){
              JComboBox combo = (JComboBox)cont.getComponent(i);
              combo.setSelectedIndex(-1);
          } else if(cont.getComponent(i) instanceof JCheckBoxMenuItem){
              JCheckBoxMenuItem check = (JCheckBoxMenuItem)cont.getComponent(i);
              check.setSelected(false);
          } else if (cont.getComponent(i) instanceof JRadioButtonMenuItem){
              JRadioButtonMenuItem radio = (JRadioButtonMenuItem)cont.getComponent(i);
              radio.setSelected(false);
          }
      }
  }