JAVA - entrySet remove&clear

snippet.java

public V standardRemove(@Nullable Object key)
{
	Iterator<Entry<K, V>> entryIterator = entrySet().iterator();
	while(entryIterator.hasNext())
	{
		Entry<K, V> entry = entryIterator.next();
		if(Objects.equals(entry.getKey(), key))
		{
			V value = entry.getValue();
			entryIterator.remove();
			return value;
		}
	}
	return null;
}


public void standardClear()
{
	Iterator<Entry<K, V>> entryIterator = entrySet().iterator();
	while(entryIterator.hasNext())
	{
		entryIterator.next();
		entryIterator.remove();
	}
}