LockScreenActivity.java

package com.example.stimulusStrategy;

import com.example.stimulus.Stimulus;

import java.util.Observable;
import java.util.Observer;

/**
 * Created by pharmacy on 09/01/2018.
 */

public class LockScreenActivity extends Observable implements StimulusStrategy {

    public void monitor() {
        //Monitor a thing

        setChanged();
        notifyObservers();
        clearChanged();
    }

    public void addObserver(Stimulus s) {
        addObserver((Observer) s);
    }
}