1

00:00:00,450 --> 00:00:04,160

So as you can see here now our values are outputted to the screen.



2

00:00:04,170 --> 00:00:04,820

OK.



3

00:00:05,040 --> 00:00:14,310

So the name of our object is my leopard color yellow speed 400 power 200 number of legs for fight true



4

00:00:14,760 --> 00:00:18,640

animal value eighty thousand claws.



5

00:00:19,140 --> 00:00:19,800

OK.



6

00:00:20,310 --> 00:00:22,020

So hopefully that makes sense.



7

00:00:22,080 --> 00:00:27,230

Now I can actually put a space between these two values 80000 and class.



8

00:00:27,390 --> 00:00:33,650

So let's actually go inside this cat class and here I can actually put an A-plus operator here.



9

00:00:33,930 --> 00:00:39,150

And then I can actually put in two double coats and now I can actually put in a space here.



10

00:00:39,150 --> 00:00:39,790

OK.



11

00:00:40,080 --> 00:00:42,670

So let's actually run our project again and see what happens.



12

00:00:42,690 --> 00:00:43,590

OK.



13

00:00:43,740 --> 00:00:48,660

So as you can see here there is space between these two values OK 80000 and class.



14

00:00:48,660 --> 00:00:49,120

OK.



15

00:00:49,170 --> 00:00:51,200

So hopefully that makes sense.



16

00:00:51,210 --> 00:00:57,280

Now let's actually go inside this bird class and let's actually put in our own implementations inside



17

00:00:57,270 --> 00:00:58,810

this birth class.



18

00:00:58,830 --> 00:01:02,350

So as you can see here this bird class is actually an animal.



19

00:01:02,360 --> 00:01:02,850

OK.



20

00:01:02,970 --> 00:01:06,560

The bird is not inside the chat family anymore.



21

00:01:06,570 --> 00:01:06,960

OK.



22

00:01:06,990 --> 00:01:14,910

So we can not relate this to the cat class ok not actually to say extends cats because the bird and



23

00:01:14,910 --> 00:01:20,510

the cat does not relate to each other ok but our bird is actually an animal.



24

00:01:20,640 --> 00:01:29,820

So we can just type in here S-turns animal and now we can actually put in the characteristics inside



25

00:01:29,820 --> 00:01:33,430

the Speth class that are specific only to this bird.



26

00:01:33,500 --> 00:01:34,050

OK.



27

00:01:34,230 --> 00:01:36,890

For example a bird can fly.



28

00:01:37,380 --> 00:01:44,190

Ok so I can just create a boolean variable boolean and then I can just give a name to this boolean variable



29

00:01:44,370 --> 00:01:46,340

can fly.



30

00:01:46,470 --> 00:01:49,490

And then I can actually put in an assignment operator here.



31

00:01:49,800 --> 00:01:58,260

And then I can actually give a value to this instance variable for example and then I can actually assign



32

00:01:58,290 --> 00:02:01,500

a value to these boolean instance variable true.



33

00:02:01,970 --> 00:02:04,110

OK so first let's actually.



34

00:02:04,110 --> 00:02:08,810

So let's actually specify the access modifier of these boolean variable.



35

00:02:08,950 --> 00:02:12,310

But and because all birds can fly.



36

00:02:12,480 --> 00:02:16,490

We can actually say that this instance variable should be a constant.



37

00:02:16,520 --> 00:02:19,080

OK so I can just put the final keyboard here.



38

00:02:19,280 --> 00:02:19,760

OK.



39

00:02:19,770 --> 00:02:24,620

Now the value of this instance variable cannot be changed.



40

00:02:24,680 --> 00:02:31,980

OK so here let's actually create another instance variable for example that is specific only to the



41

00:02:31,980 --> 00:02:33,140

SPED class.



42

00:02:33,240 --> 00:02:39,560

So private int number of leks number of beings.



43

00:02:39,800 --> 00:02:40,280

OK.



44

00:02:40,320 --> 00:02:43,890

Now let's actually create a constructor for the special class.



45

00:02:43,890 --> 00:02:44,450

OK.



46

00:02:44,670 --> 00:02:51,840

So first of all I need to actually specify the axis modifier of the constructor public and the name



47

00:02:51,840 --> 00:02:55,700

of this constructor must be the same as the name of this class bird.



48

00:02:56,040 --> 00:03:01,260

And then I need to put in a pair of round brackets after my constructor name and then I need to actually



49

00:03:01,260 --> 00:03:05,250

open and close my constructor by using these curly braces.



50

00:03:05,250 --> 00:03:10,500

So as you can see here it's now showing us an error because we are actually inheriting all of the features



51

00:03:10,530 --> 00:03:13,890

and behaviors that are that are inside these Animal class.



52

00:03:13,890 --> 00:03:19,800

We need to actually initialize these constructor inside our birth class.



53

00:03:19,830 --> 00:03:20,370

OK.



54

00:03:20,490 --> 00:03:27,080

So as you can see here inside this Animal class we have a custom code constructor that we created ourselves.



55

00:03:27,390 --> 00:03:33,870

And if we want to actually inherit all of these behaviors and features that are inside this animal class



56

00:03:34,170 --> 00:03:40,980

into a dispersed class we need to actually first of all initialize those initialize that constructor



57

00:03:41,220 --> 00:03:42,550

that is inside the Animal class.



58

00:03:42,570 --> 00:03:50,280

Ok so first of all I need to actually first of all inside the constructor I can't just type in super.



59

00:03:50,280 --> 00:03:54,900

So now I need to actually passing some arguments here some values.



60

00:03:55,170 --> 00:03:58,100

So the first argument should be of type.



61

00:03:58,120 --> 00:03:58,630

Strange.



62

00:03:58,680 --> 00:04:03,220

And let's actually go inside these animal class and see the arguments here.



63

00:04:03,270 --> 00:04:08,190

As you can see Name Caller amount of speed and amount of power.



64

00:04:08,190 --> 00:04:08,910

OK.



65

00:04:09,270 --> 00:04:21,770

So inside the special class I can just type in here name comma string color comma and amount of speed.



66

00:04:23,270 --> 00:04:27,720

Comma and amount of power.



67

00:04:28,230 --> 00:04:35,260

OK comma and then as you can see we've got two other instance variables that are only specific to disperse



68

00:04:35,330 --> 00:04:35,660

class.



69

00:04:35,680 --> 00:04:40,650

Ok so I can just type in here boolean can fly



70

00:04:43,340 --> 00:04:47,310

karma in a number of things.



71

00:04:47,610 --> 00:04:48,300

OK.



72

00:04:48,840 --> 00:04:54,780

And now I can actually passing these values that are related to the superclass.



73

00:04:55,060 --> 00:04:55,760

OK.



74

00:04:55,980 --> 00:05:06,210

So I can just type in your name comma color comma amount of speed comma amount of power.



75

00:05:06,520 --> 00:05:11,560

So as you can see here now we have successfully initialized the constructor of the superclass.



76

00:05:11,650 --> 00:05:15,340

And now we can actually initialize our own instance variables.



77

00:05:15,340 --> 00:05:19,050

OK the instance variables that are related only to this class.



78

00:05:19,240 --> 00:05:23,610

So now I want to actually again show you another important point about constants.



79

00:05:23,650 --> 00:05:27,950

So let's actually refer to this instance variable translate here.



80

00:05:27,970 --> 00:05:30,910

These dot can fly.



81

00:05:30,910 --> 00:05:33,890

Assignment operator can fly.



82

00:05:34,480 --> 00:05:40,210

So now as you can see it's now showing us an error that's actually Harvard or mouse pointer over this



83

00:05:40,510 --> 00:05:46,600

area and see what's the error cannot assign a value to final variable can fly.



84

00:05:46,600 --> 00:05:52,070

So as you can see here in line 11 we have an instance variable that is a constant.



85

00:05:52,150 --> 00:06:00,460

And this means once we assign a value to this instance variable we cannot change the value of this constant



86

00:06:00,580 --> 00:06:02,270

anywhere in our class.



87

00:06:02,290 --> 00:06:02,930

OK.



88

00:06:03,040 --> 00:06:03,550

Or in.



89

00:06:03,610 --> 00:06:08,360

Or in other classes OK we cannot change the value of this instance variable.



90

00:06:08,440 --> 00:06:16,250

Once we assign a value to this constant so here as you can see we assigned this value here to our constant.



91

00:06:16,480 --> 00:06:17,650

So we cannot change.



92

00:06:17,680 --> 00:06:22,290

As you can see we cannot change that value to another value in line 20.



93

00:06:22,570 --> 00:06:29,200

So if we want to actually eliminate this error I need to actually delete this true here and now as you



94

00:06:29,200 --> 00:06:31,520

can see here the error is gone.



95

00:06:31,600 --> 00:06:32,350

OK.



96

00:06:32,530 --> 00:06:34,600

Here as you can see we just in line 11.



97

00:06:34,600 --> 00:06:40,780

We just declared this instance variable and we didn't initialize this instance variable but in line



98

00:06:40,780 --> 00:06:45,290

20 we did initialize this instance variable OK.



99

00:06:45,520 --> 00:06:50,290

And now I want to actually initialize my other instance variable number of wins.



100

00:06:50,410 --> 00:06:53,200

OK does that number of things.



101

00:06:53,350 --> 00:06:55,960

Assignment operator number of things.



102

00:06:55,990 --> 00:06:56,510

OK.



103

00:06:56,560 --> 00:07:01,900

So now I want to actually create a set here and to get her Meffert for my instance variable instance



104

00:07:01,900 --> 00:07:02,610

variable here.



105

00:07:02,660 --> 00:07:05,830

This can fly instance variable is a constant.



106

00:07:05,840 --> 00:07:10,940

OK so we cannot actually create a set here for this instance variable B.



107

00:07:11,030 --> 00:07:17,970

We can only create a get here for this instance variable because this is a constant and we cannot actually



108

00:07:18,010 --> 00:07:20,410

change the value of this instance variable.



109

00:07:20,470 --> 00:07:24,030

Once we assign a value to this instance value.



110

00:07:24,050 --> 00:07:31,510

OK so now this is actually the Right-Click are inside this birth class and then click on generate and



111

00:07:31,510 --> 00:07:33,650

then click on get here and setter.



112

00:07:33,700 --> 00:07:40,180

So just select both of these are instance variables here and then click on OK.



113

00:07:40,660 --> 00:07:47,260

So now as you can see here now we've got to get hairs here and we've got a setter here.



114

00:07:47,380 --> 00:07:48,200

OK.



115

00:07:48,670 --> 00:07:55,240

So as you can see here is can fly is I get her my first for my can fly instance variable I don't like



116

00:07:55,810 --> 00:07:56,790

this is here.



117

00:07:56,820 --> 00:07:58,900

It's actually the change that to get.



118

00:07:59,230 --> 00:08:04,430

And as you can see we've got a good number of things Meffert as you can see here.



119

00:08:04,480 --> 00:08:07,630

This is our Get here for this instance variable.



120

00:08:07,930 --> 00:08:11,440

And this is a setter for this instance variable.



121

00:08:11,440 --> 00:08:12,100

OK.



122

00:08:12,610 --> 00:08:20,470

So now let's actually all right that was telling me if that is inside the superclass of this world class.



123

00:08:20,650 --> 00:08:25,210

So as you can see here the superclass of this bird class is Animal class OK.



124

00:08:25,270 --> 00:08:28,940

And inside the Animal class we've got this string Meffert here.



125

00:08:28,990 --> 00:08:29,520

OK.



126

00:08:29,590 --> 00:08:34,560

So we can actually use the implementation's that are inside of these two a string Meffert.



127

00:08:34,690 --> 00:08:40,550

So inside this bird class as you can see here it says Return superdad to stream here.



128

00:08:40,570 --> 00:08:41,140

OK.



129

00:08:41,260 --> 00:08:48,430

And then I can actually put in an A-plus operator here strange that format and then inside the prentices



130

00:08:48,880 --> 00:08:54,880

I can just put in two double coats and here I need to actually specify the formatting instructions of



131

00:08:54,880 --> 00:08:57,270

my object.



132

00:08:57,370 --> 00:08:57,860

OK.



133

00:08:57,930 --> 00:09:06,290

Percent as co-lead percent B And percent yes Colan percent D.



134

00:09:06,430 --> 00:09:07,050

OK.



135

00:09:07,270 --> 00:09:12,480

And let's actually put in a comma here and now we need to actually specify the arguments.



136

00:09:12,550 --> 00:09:13,270

OK.



137

00:09:13,510 --> 00:09:18,570

So for my first token I need to actually put in a string value.



138

00:09:18,850 --> 00:09:19,540

So.



139

00:09:19,690 --> 00:09:22,210

So here I can just type in flight.



140

00:09:22,990 --> 00:09:24,340

OK come on.



141

00:09:24,820 --> 00:09:28,600

And then I need to actually putting a value of type Boolean.



142

00:09:28,630 --> 00:09:30,100

As you can see Person B.



143

00:09:30,310 --> 00:09:37,600

So as you can see here I can actually put in this instance variable here can fly comma.



144

00:09:38,380 --> 00:09:44,220

And then again I need to actually put in a value of type string here for this token here.



145

00:09:44,230 --> 00:09:44,970

OK.



146

00:09:45,190 --> 00:09:48,310

So as you can see we've got this number of things here.



147

00:09:48,310 --> 00:09:49,460

Instance valuable.



148

00:09:49,540 --> 00:09:56,670

So I can just type in here number of things.



149

00:09:56,710 --> 00:09:57,430

OK.



150

00:09:57,580 --> 00:10:02,140

Comma and now I need to actually put in a value of type integer here.



151

00:10:02,140 --> 00:10:02,760

OK.



152

00:10:02,800 --> 00:10:03,970

Percent D.



153

00:10:04,510 --> 00:10:07,520

So this instance variable is of type Integer.



154

00:10:07,660 --> 00:10:12,500

And now I can just refer to this instance variable here a number of weeks.



155

00:10:12,580 --> 00:10:13,110

OK.



156

00:10:13,270 --> 00:10:16,340

And now as you can see are two string Meffert is ready.