How to use

checkType

method

in

java.util.Collections

@Override public V put(K key, V value) {
  return m.put(checkType(key, keyType), checkType(value, valueType));
}

@Override public void set(E obj) {
  i.set(checkType(obj, type));
}

@Override public boolean add(E obj) {
  return c.add(checkType(obj, type));
}

@Override public void add(int index, E obj) {
  l.add(index, checkType(obj, type));
}

  @Override public void add(E obj) {
    i.add(checkType(obj, type));
  }
}

@Override public V setValue(V obj) {
  return e.setValue(checkType(obj, valueType));
}

@Override public E set(int index, E obj) {
  return l.set(index, checkType(obj, type));
}

@SuppressWarnings("unchecked")
@Override public boolean addAll(Collection<? extends E> c1) {
  Object[] array = c1.toArray();
  for (Object o : array) {
    checkType(o, type);
  }
  return c.addAll((List<E>) Arrays.asList(array));
}

@SuppressWarnings("unchecked")
@Override public boolean addAll(int index, Collection<? extends E> c1) {
  Object[] array = c1.toArray();
  for (Object o : array) {
    checkType(o, type);
  }
  return l.addAll(index, (List<E>) Arrays.asList(array));
}

@SuppressWarnings("unchecked")
@Override public void putAll(Map<? extends K, ? extends V> map) {
  int size = map.size();
  if (size == 0) {
    return;
  }
  Map.Entry<? extends K, ? extends V>[] entries = new Map.Entry[size];
  Iterator<? extends Map.Entry<? extends K, ? extends V>> it = map
      .entrySet().iterator();
  for (int i = 0; i < size; i++) {
    Map.Entry<? extends K, ? extends V> e = it.next();
    checkType(e.getKey(), keyType);
    checkType(e.getValue(), valueType);
    entries[i] = e;
  }
  for (int i = 0; i < size; i++) {
    m.put(entries[i].getKey(), entries[i].getValue());
  }
}

  @Override public void add(E obj) {
    i.add(checkType(obj, type));
  }
}

@Override public E set(int index, E obj) {
  return l.set(index, checkType(obj, type));
}

@SuppressWarnings("unchecked")
@Override public boolean addAll(int index, Collection<? extends E> c1) {
  Object[] array = c1.toArray();
  for (Object o : array) {
    checkType(o, type);
  }
  return l.addAll(index, (List<E>) Arrays.asList(array));
}

@SuppressWarnings("unchecked")
@Override public boolean addAll(Collection<? extends E> c1) {
  Object[] array = c1.toArray();
  for (Object o : array) {
    checkType(o, type);
  }
  return c.addAll((List<E>) Arrays.asList(array));
}

@SuppressWarnings("unchecked")
@Override public boolean addAll(Collection<? extends E> c1) {
  Object[] array = c1.toArray();
  for (Object o : array) {
    checkType(o, type);
  }
  return c.addAll((List<E>) Arrays.asList(array));
}

@SuppressWarnings("unchecked")
@Override public boolean addAll(int index, Collection<? extends E> c1) {
  Object[] array = c1.toArray();
  for (Object o : array) {
    checkType(o, type);
  }
  return l.addAll(index, (List<E>) Arrays.asList(array));
}

@SuppressWarnings("unchecked")
@Override public boolean addAll(Collection<? extends E> c1) {
  Object[] array = c1.toArray();
  for (Object o : array) {
    checkType(o, type);
  }
  return c.addAll((List<E>) Arrays.asList(array));
}

@SuppressWarnings("unchecked")
@Override public boolean addAll(int index, Collection<? extends E> c1) {
  Object[] array = c1.toArray();
  for (Object o : array) {
    checkType(o, type);
  }
  return l.addAll(index, (List<E>) Arrays.asList(array));
}

@SuppressWarnings("unchecked")
@Override public boolean addAll(int index, Collection<? extends E> c1) {
  Object[] array = c1.toArray();
  for (Object o : array) {
    checkType(o, type);
  }
  return l.addAll(index, (List<E>) Arrays.asList(array));
}

@SuppressWarnings("unchecked")
@Override public boolean addAll(int index, Collection<? extends E> c1) {
  Object[] array = c1.toArray();
  for (Object o : array) {
    checkType(o, type);
  }
  return l.addAll(index, (List<E>) Arrays.asList(array));
}