Counter Class

public class Counter {

public Counter(int max) {this.max = max;}

public void reset() {val = 0;}

public int getVal() {return val;}

// Manipulator methods-

// must notify observer the model has changed

public void setVal(int val) {…}

public void inc() {...}

public void dec() {...}

// Observer-related methods

public void registerAsObserver(CounterObserver observer){…}

private void notifyObserver() {...}

private int max, val=0;

CounterObserver observer;

}

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