public boolean containsKey(Object objectKey)
    {
        int key = (Integer) objectKey;

        return keyInRange(key) && (data[offset(key)] != null);
    }
public boolean containsKey(Object objectKey)
    {
        int key = (Integer) objectKey;

        return keyInRange(key) && (data[offset(key)] != null);
    }
public boolean containsKey ( Object objectKey ) { int key = ( Integer ) objectKey ; return keyInRange ( key ) && ( data [ offset ( key ) ] != null ) ; }
{@inheritDoc}

@throws ClassCastException If the key is not an Integer.
{ @inheritDoc }