javafx - Java MethodHandle -

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@fxml private void handleleftbutton() throws throwable{  methodhandles.lookup lookup = methodhandles.lookup(); methodtype methodtype = methodtype.methodtype(void.class, listiterator.class, text.class); methodhandle leftbuttonclickmethod = lookup.findvirtual(homepresenter.class, "leftbuttonclick", methodtype);  leftbuttonclickmethod.invoke(list, menutitle);

}

why error?

java.lang.invoke.wrongmethodtypeexception: cannot convert methodhandle(homepresenter,listiterator,text)void (listiterator,text)void

looking @ example in methodhandle - think need pass instance on want call method first argument

leftbuttonclickmethod.invoke(this,list, menutitle);

but because never worked java.lang.invoke might wrong.


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