failing to retrieve multiple checked value from JSP

I'm trying to retrieve mulitple checked value, w开发者_如何学编程hich are being showed in JSP dynamically, retrieved from inbox folder of the mail server, just like in yahoo, or gmail. But whenever I select multiple checkboxes(or either one), I'm not able to retrieve their values, like subject and username. What should I have to do in JSP to retrieve those values in another JSP dynamically?

Each check-box in a form should have the same name but different value. e.g.

...
      <input
        type="checkbox"
        id="SELECT_CB_1"
        name="SELECT_CB"
        value="1"
      /> Checkbox 1
      <input
        type="checkbox"
        id="SELECT_CB_2"
        name="SELECT_CB"
        value="2"
      /> Checkbox 2
      <input
        type="checkbox"
        id="SELECT_CB_3"
        name="SELECT_CB"
        value="3"
      /> Checkbox 3
...

Then when your form gets posted, you can use HttpServletRequest to retrieve the values of all checked boxes with the name SELECT_CB.

String[] checked_values = request.getParameterValues( "SELECT_CB" );

You may need to check for null if no checkboxes are selected.

In the previous example, if you check SELECT_CB_1 and SELECT_CB_3 then checked_values will contain [ "1", "3" ]

You can use these values then to retrieve other pieces of your puzzle, like subject and username.