CCNA, CCNP, MCSA, CCNA Final Exam, All Answer Test Module With 100/100

I have a function I’m using to add my listeners to a page but I need a way to globally clear them. No matter how I try, I can’t give the functions a reference to later be emptied completely so they could be re-added later. proto.handlerFunc = {}; proto.addListener = function (evt, handler) { var self = this; this.handlerFunc = function () { handler.apply(self); } this.someObj.addEventListener(evt, this.handlerFunc, false); } proto.removeListener = function (evt) { var self = this; this.myVideo.removeEventListener(evt, this.handlerFunc, false); this.handlerFunc = null; }

I want to make an event which will be triggered after i make the selection to the JComboBox. the problem I'm now facing is that when i added an ActionListener, it was triggered when the user clicked on the box but BEFORE he actually chose the new item, thus the action listener was activated all the time on the previous value which was selected in the box. what i want to do is simply changing the title of an JTextArea according to the selection. I tried doing something like this: jBox.addActionListener(new ActionListener(){ @Override public void actionPerformed(ActionEvent e) { String alt = GetAlgoAreaTitleByChoice(); panel.remove(jArea); currentBest = setArea("",alt); currentBest.setBounds(50, 350, 1000, 290); panel.add(jArea); } }); and the method inside: private String GetArgsAreaTitleByChoice(){ String chi = jBox.getSelectedItem().toString(); if(chi.equals(generalChoice)){ return "Hello"; } else if...