How do you set a button to unselectable?

Question

How do you set a button so it us unselectable?

Answer 1

... or even remove ot form the panel (less confusing for the client)
    if(e.getSource()==button1){
        // do things and
        myPanel.remove(button1);
        myPanel.add(newInterestingButton);
}OR: use a boolean
     if(e.getSource()==button1){
        if(allowUseButton1){
           // do things and set the condition false
           allowUseButton1 = false;
        }  // and tell them
        if(!allowUseButton1){
           myTextArea.setText("Please use the newInterestingButton");