JSP actionListener doesn't work

Question

I am new to JSP and all this web application stuff. (Sorry if I am in the wrong forum).
I have created a jsp "webpage" with a few textfields and a button. I want the jsp to send the information from the textfields to a mySQL table via JDBC Connection. The connection works(I have tested it in my init() meyhode and it worked), but if I add an action Event (with NetBeans and Sun Studio Creater) to the button, and I press the button nothing happens.
I have tried to put diffrent code into the methode, like change the text of a lable or give a popup frame, but if I press the button nothing happens.
Here is the listener for the button, it has been added to the button:
    private static final String DRIVER = "com.mysql.jdbc.Driver";
    private static final String DATABASE_URL = "jdbc:mysql://localhost/P";
    private static final String USER = "jhtp7";
    private static final String PASS = "jhtp7";
    private static Connection connection = null;
    private static PreparedStatement insert = null;
    private int __placeholder;
    private void _init() throws Exception {               //the init methode
         Class.forName(DRIVER);
         connection =DriverManager.getConnection(DATABASE_URL, USER, PASS);
        insert = connection.prepareStatement("insert into pp (Number, Name) values (?, ?)");
public String button3_action() {         //the action event for the button
        try{ 
        insert.setInt(1,4);
        insert.setString(2, "fghfghfghfghfgh");
        insert.executeUpdate();
        }catch (SQLException ee){
        return null;
    }Can anyone tell me what I have done wrong, or how to write a normal ActionListener(like in normal java) and add it to the button???

Answer 1

You can't. The code that is produced by JSP is HTML, not Swing and not AWT. Which means you can't use the Java Event Dispatching to work with the GUI.
You will need to put the input into an HTML <form> with an action to a servlet. You will need to submit the form using an <input type="submit"> and you will need a servlet that processes the incoming parameters and makes the JDBC call. Read the [JEE 5 Tutorial|http://java.sun.com/javaee/5/docs/tutorial/doc/], particularly the first few chapters, and learn HTML.