se1 uebung 9

activity.java

public class Activity extends ActivityComponent {
	private int time;
	
	public Activity(int t) {
		this.time = t;
	}
	
	public int count() {
		return time;
	}
}

activitycomponent.java

public abstract class ActivityComponent {
	
	public void add(ActivityComponent c) {
		throw new UnsupportedOperationException();
	}

	public void remove(ActivityComponent c) {
		throw new UnsupportedOperationException();
	}

	public int count() {
		throw new UnsupportedOperationException();
	}
}

activitycomponenttest.java

public class ActivityComponentTest {
	public static void main(String[] args) {
		ActivityComponent ac = new Process();
		ActivityComponent p1 = new Process();
		ActivityComponent a1 = new Activity(6);
		ActivityComponent a2 = new Activity(5);
		ActivityComponent a3 = new Activity(4);
		ac.add(a1);
		ac.add(p1);
		p1.add(a2);
		p1.add(a3);
		System.out.println(ac.count());
	}
}

process.java

import java.util.ArrayList;
import java.util.Iterator;


public class Process extends ActivityComponent {
	ArrayList components = new ArrayList();
	@Override
	public void add(ActivityComponent c) {
		components.add(c);
	}

	@Override
	public void remove(ActivityComponent c) {
		components.remove(c);
	}

	@Override
	public int count() {
		int time = 0;
		Iterator i = components.iterator();
		while(i.hasNext()) {
			ActivityComponent ac = (ActivityComponent) i.next();
			time = time + ac.count();
		}
		return time;
	}

}