Answer Posted / shakir khan

javax.servlet.Servlet interface defines 3 methods known as
life cycle.
Servlet intialisation takesplace every first time,it
receives a request and remains in memory till times out or
server shutdown

When first request came in for a servlet,servlet invoke
init() only once.

public void init(ServletConfig config)
{
}
Thereafter if any user wants requet,it will directly
executes the service().

public void service(ServletRequest req,ServletResponse res)
throws servletException,IOException
{
}
When server wants to remove the servlet from pool ,it will
executes the destroy().

public void destroy()
{
}

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