CounterLogger Class

class CounterLogger implements CounterObserver {

public CounterLogger(Counter ctr, String counterName) {

this.counterName = counterName;

ctr.registerAsObserver(this); // Observes counter

}

public void counterHasChanged(Counter ctr) {

System.out.println(counterName + " changed to " +

ctr.getVal());

}

private String counterName; // For id purposes

}

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