public Integer getDBPortNumber() {
        return this.dBPortNumber;
    }
<p>
The port number on which the database accepts connections.
</p>
<p>
The value of the <code>DBPortNumber</code> parameter must not match any of the port values specified for options
in the option group for the DB instance.
</p>
<p>
Your database will restart when you change the <code>DBPortNumber</code> value regardless of the value of the
<code>ApplyImmediately</code> parameter.
</p>
<p>
Default: <code>8182</code>
</p>

@return The port number on which the database accepts connections.</p>
        <p>
        The value of the <code>DBPortNumber</code> parameter must not match any of the port values specified for
        options in the option group for the DB instance.
        </p>
        <p>
        Your database will restart when you change the <code>DBPortNumber</code> value regardless of the value of
        the <code>ApplyImmediately</code> parameter.
        </p>
        <p>
        Default: <code>8182</code>
aws-java-sdk-neptune/src/main/java/com/amazonaws/services/neptune/model/ModifyDBInstanceRequest.java