java - How can I find out, that a Node or a ButtonBase is a Button? -

the title says it. how can check node item or buttonbase item button? can use equals method?

public void initlistener(arraylist<treeitem> treebranches, buttonbase item){      if(item != null && **item.equals**....?)){ ... }  } 

if(item != null && item instanceof button) { ... } 

or simply, since (null instanceof button) == false:

if(item instanceof button) { ... }