import java.util.ArrayList;
import java.util.Collection;

public class DelegationExample {
	private interface SimpleCollection {
		boolean add(String item);
		boolean remove(Object item);
	}
	
	private final Collection<String> collection = new ArrayList<String>();
	
	@java.lang.SuppressWarnings("all")
	public boolean add(final java.lang.String item) {
		return this.collection.add(item);
	}
	
	@java.lang.SuppressWarnings("all")
	public boolean remove(final java.lang.Object item) {
		return this.collection.remove(item);
	}
}

class ExcludesDelegateExample {
	long counter = 0L;
	
	private interface Add {
		boolean add(String x);
		boolean addAll(Collection<? extends String> x);
	}
	
	private final Collection<String> collection = new ArrayList<String>();
	
	public boolean add(String item) {
		counter++;
		return collection.add(item);
	}
	
	public boolean addAll(Collection<? extends String> col) {
		counter += col.size();
		return collection.addAll(col);
	}
	
	@java.lang.SuppressWarnings("all")
	public int size() {
		return this.collection.size();
	}
	
	@java.lang.SuppressWarnings("all")
	public boolean isEmpty() {
		return this.collection.isEmpty();
	}
	
	@java.lang.SuppressWarnings("all")
	public boolean contains(final java.lang.Object arg0) {
		return this.collection.contains(arg0);
	}
	
	@java.lang.SuppressWarnings("all")
	public java.util.Iterator<java.lang.String> iterator() {
		return this.collection.iterator();
	}
	
	@java.lang.SuppressWarnings("all")
	public java.lang.Object[] toArray() {
		return this.collection.toArray();
	}
	
	@java.lang.SuppressWarnings("all")
	public <T extends .java.lang.Object>T[] toArray(final T[] arg0) {
		return this.collection.<T>toArray(arg0);
	}
	
	@java.lang.SuppressWarnings("all")
	public boolean remove(final java.lang.Object arg0) {
		return this.collection.remove(arg0);
	}
	
	@java.lang.SuppressWarnings("all")
	public boolean containsAll(final java.util.Collection<?> arg0) {
		return this.collection.containsAll(arg0);
	}
	
	@java.lang.SuppressWarnings("all")
	public boolean removeAll(final java.util.Collection<?> arg0) {
		return this.collection.removeAll(arg0);
	}
	
	@java.lang.SuppressWarnings("all")
	public boolean retainAll(final java.util.Collection<?> arg0) {
		return this.collection.retainAll(arg0);
	}
	
	@java.lang.SuppressWarnings("all")
	public void clear() {
		this.collection.clear();
	}
}