package headfirst.combined.djview;  public class BeatController implements ControllerInterface {	BeatModelInterface model;	DJView view;   	public BeatController(BeatModelInterface model) {		this.model = model;		view = new DJView(this, model);        view.createView();        view.createControls();		view.disableStopMenuItem();		view.enableStartMenuItem();		model.initialize();	}  	public void start() {		model.on();		view.disableStartMenuItem();		view.enableStopMenuItem();	}  	public void stop() {		model.off();		view.disableStopMenuItem();		view.enableStartMenuItem();	}    	public void increaseBPM() {        int bpm = model.getBPM();        model.setBPM(bpm + 1);	}    	public void decreaseBPM() {        int bpm = model.getBPM();        model.setBPM(bpm - 1);  	}   	public void setBPM(int bpm) {		model.setBPM(bpm);	}}