@Override
    public boolean equals(Object obj) {
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        final Map other = (Map) obj;
        if (this.noOfRows != other.noOfRows) {
            return false;
        }
        if (this.noOfColumns != other.noOfColumns) {
            return false;
        }
        return true;
    }