Perintah Objek Netbean

RADIO BUtton
if(rdBisnis.isSelected()){
JOptionPane.showConfirmDialog(null, "Bisnis","tampil",
JOptionPane.CLOSED_OPTION,JOptionPane.WARNING_MESSAGE);
}
else if(rdEksekutif.isSelected()){
JOptionPane.showConfirmDialog(null,"Eksekutif","Tampil",
JOptionPane.CLOSED_OPTION,JOptionPane.WARNING_MESSAGE);
}

CHeckBox

if((cbDewasa.isSelected())&& (cbAnak.isSelected())){
jmlDewasa = Integer.parseInt(txtDewasa.getText());
jmlAnak = Integer.parseInt(txtAnak.getText());

}
else if(cbDewasa.isSelected()){
jmlDewasa = Integer.parseInt(txtDewasa.getText());

}
else if(cbAnak.isSelected()){
jmlAnak = Integer.parseInt(txtAnak.getText());

}

COMBO Box
if (cmbKereta.getSelectedIndex()==0){
hrgAnak= 60000;
hrgDewasa=120000;

} else if (cmbKereta.getSelectedIndex()==1){
hrgAnak= 30000;
hrgDewasa=75000;

}

/*
if (cmbKereta.getSelectedItem().equals("Argo Jati")){
hrgAnak= 60000;
hrgDewasa=120000;

} else if (cmbKereta.getSelectedItem().equals("Cirebon Express")){
hrgAnak= 30000;
hrgDewasa=75000;