karthickvarunan

You can send request parameters straight into a a bean, without scripting: The html code:

<form action="TestBean.jsp">
    name: <input type="text" name="userName">
    ID#: <input type="text" name="userID">
    <input type="submit">
</form>
Inside TestBean.jsp:

<jsp:useBean id="person" type="foo.Person" class="foo.Employee">
    <jsp:setProperty name="person" property="name" param="userName">
Note that param attribute: the param value comes from the name attribute of the form input field.

It can be simplified further, though I don’t know if that is a good idea, by following some conventions:

// abstract class foo.Person
String getName();
void setName();

// foo.Employee extends foo.Person
int getEmpID()
void setEmpID(int)
Now the HTML needs to be (basically BOTH parameters matches the property name of the bean):

<form ...>
    name: <input type="text" name="name">
    ID#$: <input type="text" name="empID">
    ...
</form>
Then we get to do this:

<jsp:useBean ... >
    <jsp:setProperty name="person" property="*" />
Note that only String and primitives are converted automatically.

for
servlet example programs

A servlet life cycle can be defined as the entire process from its creation till the destruction. The following are the paths followed by a servlet.

The servlet is initialized by calling the init() method.
The servlet calls service() method to process a client's request.
The servlet is terminated by calling the destroy() method.
Finally, servlet is garbage collected by the garbage collector of the JVM.

for servlet tutorial

looking forward to learning java from the experts. Then I will recommend this tutorial site for further

java example programs