How to call a procedure in Java.

This is a bit obscure, can you elaborate further?  

- What type of connection are you attempting to test to see if it's open or closed.  
- Are you trying to do this with a Java applet, or with JavaScript in an HTML page?

I am sending the example in dot net.
I want to check whether the connection is closed, if so then only open it.
Secondly how to call a procedure.

Try
            con = New SqlConnection("Data Source=192.168.171.41;Initial Catalog=amis;User Id=sa;Password=XXXX")
            cmd = New SqlCommand
            cmd.CommandType = CommandType.StoredProcedure
            cmd.Connection = con
            cmd.CommandText = "saveuser"
            If con.State = ConnectionState.Open Then con.Close()
            con.Open()
            cmd.Parameters.AddWithValue("@username", txtusername.Text.Trim())
            cmd.Parameters.AddWithValue("@password", txtpassword.Text.Trim())
            cmd.ExecuteNonQuery()
            MessageBox.Show("Record Saved Sucessfully")
        Catch eee As Exception
            MessageBox.Show("Error occured" & eee.ToString())
        Finally
            con.Close()
        End Try

tx