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If the Vector is stored in a Session Object, I think each user has own Vector. Is it thread-safe?

I store the user's Vector in a Session Object. So, how each user has a session, I think it is possible to use an Arraylist. When a I need to get the data, I declare a vector variable and set to session object. This is a thread-safe method? What do you think? Thank's dennis

Hi I have a jsp application. In this program, each user may make simultaneous purchases. So I need a way to store several itens. I chose to use a Vector, but I read that's better to use ArrayList, because it's faster than Vector. In this situation, what should I use? Thank's dennis

Hi I think you need to pass the url with response.encodeURL(...) nandov

I have other question. In my jsp files I use the session object to store variables. When I set to null the session or other value, the variable stored lost the reference? And the variable is able to be collected by gc? Thank's dennis michel

When I declared a variable in a jsp file and I was redirected to another page, the variable lost the reference? I have an Vector of String Arrays and set null to it. In this case the arrays will be collected by gc? Thank's dennis michel.

Hi I have a jsp based application. I'd like to know if it's good practice to set all variables to null, after using. I read that it helps the garbage collector to determine unused variables. I have several variables such as String, arrays, vectors and arraylists. I set to null only the vectors...