Doubt in pass of connection by parameter

I have a technical doubt about pass of parameters. I have a method to which I pass as parameter a connection with database like 'public void ejecutarSelect (Connection with, String selec)'. The connection comes opened to the method, and it only executes the select. The connection is closed out of the method.
Here my doubt comes. In java all parameter passed to a method is for value, I mean, to the beginning of the method is created a copy of the variables passed by parameter and at the end of the method it destroys them. But in case of the connection, does the method copy the pointer to the connection or really it clon the connection with database? I am interested becuase I want to know if I would be leaving connections open.
Thanks.

Java passes all parameters by value. Parameters hold primitive types and Object references (not Objects). In your case the Object reference is being passed by value but that in effect causes the Object (Connection in your case) to be passed by reference.

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