google-maps-java | Java client library for the Google web services | Learning library

You have the right idea. In ArcGIS API Extent class has union method that extend the caller to include the geometry extent pass as parameter. Because you are using Point you can't use union method, Point extent is null. But no worries you can achieve this just iterating the graphics and extending the extent yourself.

Look at this example I made for you using as base the link of your question,

As mentioned by the first answer, there's no such API to monitor these usages but there are couple of ways to monitor your usage which are:

1. Setup Budget Alerts, this will trigger notification if you've reached a certain amount of your specified budget for a month, but please note that this will only notify you and will not actually stop the usage after the specified amount.

2. If you would like to monitor or get an overview of your daily usage, you may implement what we call channels with the help of BigQuery Export. This will give you a breakdown report of daily usage. The standard SQL code you can use to retrieve such report using the BigQuery export is:

I'm not sure but you can try to get instance of map throw ref like