Can ResultSets and Connections be passed around like other objects?

Yes, although, as usual, technically we are passing object references. However, there is a chain of dependency that must be kept in mind and should be tracked for Connection, Statement and ResultSet. For example, If a ResultSet is not scrollable, rows already read are not available, so passing the same ResultSet to different methods may not work as expected.

If the originating Statement is closed, the ResultSet is generally no longer available. More.

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