Boolean in Java condition

I have an issue, I have a method which is an action performed. If the checkbox is ticked then additional fields become available. If not ticked then they are greyed out. So basically what I want is to add to this method. I have a first condition and now need to add a second condition to it. I pasted the code snippet below, basically what I need is to put it into an if else, but I get some errors. Any advise is much appreciated.

  public void actionPerformed(ActionEvent e) {
    boolean sel = _useSSL.isSelected();
    _port.setUseSSL(sel);
    _keystore.setEnabled(sel);
    _passphrase.setEnabled(sel);
    L_KEYSTORE.setEnabled(sel);
    L_PASSPHRASE.setEnabled(sel);

}

Above is the working method, Now I need to add in if _truststore.isSelected(); then execute something else

How can I add in this second Boolean condition to the method ?