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package proxy;
import java.util.Collection;
import java.util.Iterator;
import java.io.Serializable;
@SuppressWarnings("serial")
class UnmodifiableCollection<E> implements Collection<E>, Serializable {
Collection<E> c;
UnmodifiableCollection(Collection<E> c) {
if (c==null)
throw new NullPointerException();
this.c = c;
}
public int size() {return c.size();}
public boolean isEmpty() {return c.isEmpty();}
public boolean contains(Object o) {return c.contains(o);}
public Object[] toArray() {return c.toArray();}
public <T> T[] toArray(T[] a) {return c.toArray(a);}
public String toString() {return c.toString();}
public boolean containsAll(Collection<?> d) {return c.containsAll(d);}
public Iterator<E> iterator() {
return new Iterator<E>() {
Iterator<E> i = UnmodifiableCollection.this.c.iterator();
public boolean hasNext() {return i.hasNext();}
public E next() {return i.next();}
public void remove() {
throw new UnsupportedOperationException();
}
};
}
public boolean add(Object o){
throw new UnsupportedOperationException();
}
public boolean remove(Object o) {
throw new UnsupportedOperationException();
}
public boolean addAll(Collection<? extends E> c) {
throw new UnsupportedOperationException();
}
public boolean removeAll(Collection<?> c) {
throw new UnsupportedOperationException();
}
public boolean retainAll(Collection<?> c) {
throw new UnsupportedOperationException();
}
public void clear() {
throw new UnsupportedOperationException();
}
}
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