Java code and jsp interaction

Question

Hi,
How does one interact between java code and jsp page.That is, if the java code does say database connection, the web page should tell that the connection has been made,just like an application but this will work on the web server not in the console.Kindly let me know.
As

Answer 1

Just curious but where do these questions come from? A course you are taking or you are building something for a hobby?
If you are building some small simple web-app it's probably quicker to embed code right onto your JSP page.
There are various levels of abstracting your web-app separating display from logic from the model.
The following are techniques from simple web-apps to more complicated ones.
-Embedding script right into your JSP
-Using beans
-Using custom tags ( I think there are some standard ones now, struts seems to be a popular buzzword)
-Including a servlet to handle your requests redirect, update bean content grab info form your database and forward to a JSP. (Read up on model 2 architecture.)
To include as much detail as possible would be to write a book. Fortunately many have so I don't have to fit one in this tiny reply box.
Hope that was somewhat useful.