1
00:00:01,120 --> 00:00:03,140
Welcome to this lecture now.

2
00:00:03,170 --> 00:00:08,860
We'll go to the second part of the Diago as we have covered these three parts.

3
00:00:09,130 --> 00:00:12,730
Let me recapitulate what we have done in these three parts.

4
00:00:13,090 --> 00:00:17,980
The claims, things like the request or the container, the container creates a request and response

5
00:00:17,980 --> 00:00:18,880
objects request.

6
00:00:18,880 --> 00:00:23,550
In response, objects embody the actual request and responses.

7
00:00:24,430 --> 00:00:29,460
These requests and responses are sent to the head office servlet, not to the actual servlet, but the

8
00:00:29,560 --> 00:00:30,340
head of the subject.

9
00:00:30,340 --> 00:00:35,160
Even if the request is sent, another third will be created and so on and so forth.

10
00:00:35,620 --> 00:00:36,280
So let us see.

11
00:00:36,310 --> 00:00:37,140
No one did.

12
00:00:37,150 --> 00:00:43,780
The second part of the diagram for the second part of the diagram, the fourth part that is part of

13
00:00:43,780 --> 00:00:49,420
this continuum diagram is that this request and response.

14
00:00:51,040 --> 00:00:59,230
Is attached to the Soulet and the container called the service method of the Sonic are the types of

15
00:00:59,380 --> 00:01:06,340
which extension which are which are playing Java Object Exchange contains the service method and the

16
00:01:06,340 --> 00:01:14,800
service method has has different context and configuration related related gaud, which it does.

17
00:01:14,920 --> 00:01:16,950
So we need to call the service method.

18
00:01:16,960 --> 00:01:19,240
So the container called the service method.

19
00:01:19,420 --> 00:01:23,710
This is the fourth step of the life cycle of assembly.

20
00:01:24,140 --> 00:01:26,650
Now the next step.

21
00:01:27,830 --> 00:01:29,440
You know, in the next step.

22
00:01:32,540 --> 00:01:36,160
The service calls the service method father calls douget.

23
00:01:36,460 --> 00:01:43,540
Now, you know that the request has request object embodies the entire detail of the request.

24
00:01:43,580 --> 00:01:48,820
So it also knows that the request is a type of request because it's a type of request.

25
00:01:48,830 --> 00:01:52,350
The service will guard boogied if it was a forced type of request.

26
00:01:52,370 --> 00:01:54,340
It would have called to post.

27
00:01:54,680 --> 00:01:58,220
So in this example, we are calling the do get method.

28
00:01:58,640 --> 00:02:03,350
You know, once the douget method is called, we do the processing, whatever processing we wanted to

29
00:02:03,350 --> 00:02:05,990
do in the in the douget method with the request.

30
00:02:06,740 --> 00:02:11,390
And then we send a response back in this case and demand file.

31
00:02:11,690 --> 00:02:18,150
This is the initiative on file and embodied in the body of response and send it back to the container.

32
00:02:19,100 --> 00:02:29,430
And lastly, the container then sends an HDTV response back to the client, to the browser, and it

33
00:02:29,720 --> 00:02:31,090
does the estimate pitch.

34
00:02:31,520 --> 00:02:35,600
What happens in the server is that this thread is destroyed.

35
00:02:36,470 --> 00:02:45,080
The servlet can wait for another request or it can be destroyed, and the request and response are certainly

36
00:02:45,080 --> 00:02:45,740
destroyed.

37
00:02:46,880 --> 00:02:52,820
So these these things happen that is destroyed means they're dislocated for being sent for garbage collection

38
00:02:52,820 --> 00:02:53,480
in Java.

39
00:02:53,930 --> 00:02:57,230
OK, so this is what happens in the life cycle of a soulet.

40
00:02:57,230 --> 00:03:04,230
And I want to show you in a diagram form, we will also go to the life cycle of possibility in a in

41
00:03:04,240 --> 00:03:06,650
a exampled program, a Java program.

42
00:03:06,660 --> 00:03:11,060
B will create a servlet and we will see what happens.

43
00:03:11,060 --> 00:03:13,370
In what order does it happen?

44
00:03:13,610 --> 00:03:16,850
Destroy happen service happen to get dubost.

45
00:03:16,850 --> 00:03:18,230
In what order do they happen?

46
00:03:18,450 --> 00:03:20,270
When does the object get created.

47
00:03:20,420 --> 00:03:27,020
All these things we to see and then we actually called, then we actually program a sublet and we do

48
00:03:27,020 --> 00:03:29,330
that most probably in the next section.