1 00:00:00,120 --> 00:00:00,630 OK. 2 00:00:00,810 --> 00:00:06,340 Now let's actually creates a getter method for this name instance variable. 3 00:00:06,450 --> 00:00:10,160 And remember that this instance variable is a constant. 4 00:00:10,170 --> 00:00:10,870 OK. 5 00:00:11,010 --> 00:00:16,300 So we cannot change the value of this instance variable from another method or class. 6 00:00:16,500 --> 00:00:19,350 So here I need to only create a good head Smurfette. 7 00:00:19,360 --> 00:00:25,650 OK not a setter my it because we cannot change the value of this instance variable once we assign a 8 00:00:25,650 --> 00:00:27,690 value to this instance variable. 9 00:00:27,730 --> 00:00:33,980 Ok so first of all I need to specify the axis modifier of this get RMF it public. 10 00:00:34,370 --> 00:00:35,010 OK. 11 00:00:35,340 --> 00:00:43,080 And here I need to specify the return type of this term if it is 3 and the name of this never is gets 12 00:00:44,580 --> 00:00:45,190 name. 13 00:00:45,450 --> 00:00:46,260 OK. 14 00:00:46,740 --> 00:00:51,240 And then I need to put in a pair of round brackets after my first name and then I need to open and close 15 00:00:51,240 --> 00:00:53,580 my method by using these curly braces. 16 00:00:53,580 --> 00:00:54,100 OK. 17 00:00:54,390 --> 00:00:55,090 So here. 18 00:00:55,140 --> 00:01:02,790 So inside the Mefford now I need to return the value of this name instance variable OK. 19 00:01:03,720 --> 00:01:09,960 So as you can see here this is OUR get and my faith for this name instance variable and we don't need 20 00:01:09,960 --> 00:01:15,870 to actually create a certain method for this instance variable because because this instance value is 21 00:01:15,870 --> 00:01:22,470 a constant and we cannot change the value of this instance variable from another method or class OK 22 00:01:22,860 --> 00:01:29,670 we just need to create a get in effect in order to allow other classes to access the value of these 23 00:01:30,560 --> 00:01:32,150 name instance variable. 24 00:01:32,160 --> 00:01:32,800 OK. 25 00:01:32,970 --> 00:01:37,340 So again we need a good head on my faith for this color instance variable. 26 00:01:37,500 --> 00:01:44,190 So the access modifier of this are get him if it is public and the return type of the Smurfette is a 27 00:01:44,190 --> 00:01:49,650 strange and the name of this method is get color OK. 28 00:01:49,890 --> 00:01:53,430 And then I need to actually put in a paragraph brackets after my method name. 29 00:01:53,640 --> 00:02:00,150 And then I need to open and close my method by using these curly braces inside them if I can just return 30 00:02:01,080 --> 00:02:04,040 the color instance value. 31 00:02:04,050 --> 00:02:05,180 OK. 32 00:02:05,790 --> 00:02:08,570 So as you can see here these are the Get help efforts. 33 00:02:08,670 --> 00:02:12,330 These are they get hairs for instance variables. 34 00:02:12,360 --> 00:02:19,280 So here I want to actually create a get here and a setter for this amount of speed instance variable. 35 00:02:19,440 --> 00:02:22,770 So as you can see here this instance variable is not a constant. 36 00:02:22,770 --> 00:02:23,190 OK. 37 00:02:23,340 --> 00:02:30,210 So we can actually create a set in my foot in order to allow that other classes you know to change the 38 00:02:30,210 --> 00:02:32,240 value of this instance variable. 39 00:02:32,460 --> 00:02:37,250 So first I create a certain my faith for this amount of speed instance variable. 40 00:02:37,560 --> 00:02:44,650 So the access modifier of this method is public and the return type of this method is voit. 41 00:02:45,190 --> 00:02:45,910 OK. 42 00:02:46,430 --> 00:02:49,720 And then the name of this novel is set amount of speed. 43 00:02:50,180 --> 00:02:55,640 And then I need to actually put in a pair of round black kids after my Meffert name and then inside 44 00:02:55,640 --> 00:03:01,520 the apprentice's I need to actually specify that this is going to actually accept an argument of type 45 00:03:01,580 --> 00:03:07,050 int and the name of this argument is you ok. 46 00:03:07,130 --> 00:03:12,550 It can be amount of speed to for example amount amount of speed. 47 00:03:12,640 --> 00:03:13,150 OK. 48 00:03:13,280 --> 00:03:16,600 And then I need to open and close my method by using these curly braces. 49 00:03:16,760 --> 00:03:24,940 So now inside I'm afraid I can't just putting this key vote that amount of speed assignment operator. 50 00:03:25,100 --> 00:03:25,910 Amount of speed. 51 00:03:25,940 --> 00:03:26,460 OK. 52 00:03:26,660 --> 00:03:32,390 So because these are the name of the name of this argument is the same as this is the same as the name 53 00:03:32,390 --> 00:03:33,950 of this instance variable. 54 00:03:34,070 --> 00:03:41,240 I needed to put this key word here in order to refer to this instance variable here and then I put an 55 00:03:41,300 --> 00:03:46,760 assignment operator here and then I assigned this argument to this instance variable. 56 00:03:46,840 --> 00:03:47,200 OK. 57 00:03:47,210 --> 00:03:48,980 In this video I made a mistake. 58 00:03:49,010 --> 00:03:49,470 OK. 59 00:03:49,550 --> 00:03:52,520 And here I want to actually fix these mistakes. 60 00:03:52,550 --> 00:03:59,980 First of all inline 20 are actually assigned at this amount of speed argument to this amount of power 61 00:03:59,990 --> 00:04:00,990 instance variable. 62 00:04:01,000 --> 00:04:01,850 And this is wrong. 63 00:04:02,060 --> 00:04:06,160 I should actually FAIL to this amount of power argument to name. 64 00:04:06,260 --> 00:04:08,540 So I actually to type in amount of power. 65 00:04:08,570 --> 00:04:09,260 OK. 66 00:04:09,710 --> 00:04:14,830 And the next mistake that I made is in this method set amount of speed first. 67 00:04:14,870 --> 00:04:21,710 I actually deferred to the name of the the name of this amount of power instance variable and this is 68 00:04:21,710 --> 00:04:22,250 right. 69 00:04:22,310 --> 00:04:26,970 This left is for actually sitting values to this amount of spit instance variable. 70 00:04:26,970 --> 00:04:31,120 So change the name of this instance variable to amount of speed. 71 00:04:31,440 --> 00:04:32,120 OK. 72 00:04:32,180 --> 00:04:37,820 And then as you can see here we are actually assigning this amount of speed argument to this amount 73 00:04:37,820 --> 00:04:39,310 of speed instance variable. 74 00:04:39,320 --> 00:04:42,170 Ok so now we actually fixed these mistakes. 75 00:04:42,170 --> 00:04:42,830 OK. 76 00:04:42,980 --> 00:04:47,840 So make sure that you actually assign this argument to this amount of speed instance variable in this 77 00:04:47,840 --> 00:04:48,150 method. 78 00:04:48,170 --> 00:04:48,790 OK. 79 00:04:49,130 --> 00:04:56,610 So here again I create another get my faith for this is amount of speed instance valuable public. 80 00:04:56,780 --> 00:05:01,480 And as you can see the return type of this method is of type int. 81 00:05:01,550 --> 00:05:02,040 OK. 82 00:05:02,210 --> 00:05:06,260 As you can see the data type of this instance variable is it. 83 00:05:06,290 --> 00:05:11,210 So we need to actually turn a value of type int from this I get head Meffert. 84 00:05:11,210 --> 00:05:11,910 OK. 85 00:05:12,260 --> 00:05:19,580 So publish it gets amount of speed and then I need to put in a pair of round brackets after my Meffert 86 00:05:19,580 --> 00:05:20,010 name. 87 00:05:20,180 --> 00:05:24,370 And then I need to open and close my effect by using these curly braces here. 88 00:05:24,380 --> 00:05:30,400 I just need to return the value of this amount of speed instance variable OK. 89 00:05:31,190 --> 00:05:38,240 So again I actually create a set in my head for this amount of power instance variable. 90 00:05:38,540 --> 00:05:41,570 So I just need to type in here public. 91 00:05:42,890 --> 00:05:49,470 And the return type of this method is void and the name of this method is set amount of power. 92 00:05:49,760 --> 00:05:53,240 And then I need to put in I've had around brackets after of my name. 93 00:05:53,240 --> 00:06:00,210 So here I want to specify that this is going to actually accept an argument of type int So here the 94 00:06:00,210 --> 00:06:04,160 data type of the argument is int and the name of this argument is. 95 00:06:04,170 --> 00:06:05,120 Amount of power. 96 00:06:05,140 --> 00:06:06,310 OK. 97 00:06:06,350 --> 00:06:10,010 And then I need to open and close my method by using these curly braces. 98 00:06:10,220 --> 00:06:13,110 So inside I'm afraid I just live in these thoughts. 99 00:06:13,370 --> 00:06:16,760 I'm out of power assignments operator. 100 00:06:16,880 --> 00:06:17,860 Amount of power. 101 00:06:17,870 --> 00:06:18,810 OK. 102 00:06:19,370 --> 00:06:23,610 So this is our set and my faith for the amount of power instance variable. 103 00:06:23,990 --> 00:06:30,310 And then I need to actually create or get home fit for this instance variable amount of power. 104 00:06:30,470 --> 00:06:35,480 So public and the return type of This Is It. 105 00:06:35,960 --> 00:06:40,120 And the name of this method is gets amount of power. 106 00:06:40,160 --> 00:06:43,290 And then I need to put in a pair of hands brackets after my name. 107 00:06:43,340 --> 00:06:47,910 And then I need to actually open and close my method by using the curly braces. 108 00:06:47,930 --> 00:06:56,150 So here I just need to return the value of this amount of power instance variable amount of power instance 109 00:06:56,160 --> 00:06:56,600 variable. 110 00:06:56,660 --> 00:07:03,830 Ok so now I created the guitarist and the setters for these instance variables. 111 00:07:04,010 --> 00:07:07,280 So now I want to actually redefine. 112 00:07:07,580 --> 00:07:17,870 So now I want to actually redefine a method that is actually inside the object class extends object. 113 00:07:17,870 --> 00:07:26,060 So this object class has some methods and variables and this animal class can actually access those 114 00:07:26,250 --> 00:07:32,240 are methods or variables because this animal class actually inherits all the behaviors and features 115 00:07:32,240 --> 00:07:33,820 of this object class. 116 00:07:33,840 --> 00:07:35,160 Ok by default. 117 00:07:35,300 --> 00:07:41,480 And here are I just wanted to show you that this animal class actually inherits all of these behaviors 118 00:07:41,510 --> 00:07:42,200 by default. 119 00:07:42,230 --> 00:07:42,640 OK. 120 00:07:42,650 --> 00:07:49,430 So in order to actually access behaviors that are inside this object class I can just refer to the name 121 00:07:49,430 --> 00:07:50,750 of those methods. 122 00:07:50,750 --> 00:08:00,140 So for example to a strange as you can see this is a method that is inside this object class. 123 00:08:00,240 --> 00:08:08,340 Attari and this override key word here means that we are redefining or overriding a method that is inside 124 00:08:08,340 --> 00:08:09,200 this object class. 125 00:08:09,210 --> 00:08:09,820 OK. 126 00:08:09,840 --> 00:08:15,920 And here I can actually put my own instructions my own implementations inside this method. 127 00:08:15,930 --> 00:08:16,720 OK. 128 00:08:17,280 --> 00:08:23,460 So this is how we can actually access the behaviors that are inside the class that we are inheriting 129 00:08:23,460 --> 00:08:23,830 from. 130 00:08:23,900 --> 00:08:30,960 OK so if we actually delete these two words here as you can see it's going to actually show us enough 131 00:08:31,010 --> 00:08:38,190 no errors because by default this animal class is actually inheriting all of the behaviors and features 132 00:08:38,430 --> 00:08:41,380 that are inside the inside the object class. 133 00:08:41,400 --> 00:08:41,770 OK. 134 00:08:41,790 --> 00:08:46,630 And here as you can see that the access modified of the Smurfette is public. 135 00:08:46,890 --> 00:08:52,420 The return type of this method is a string and the name of this method is too strange. 136 00:08:52,430 --> 00:08:58,770 OK so now let's actually go inside the object class in order to find these two string method. 137 00:08:58,770 --> 00:08:59,280 OK. 138 00:08:59,520 --> 00:09:06,510 So here I just need to type extents object and then and then hold the command key and then click on 139 00:09:06,510 --> 00:09:07,980 this object class. 140 00:09:08,100 --> 00:09:10,440 And here you are to actually find the two is three Meffert. 141 00:09:10,440 --> 00:09:10,990 OK. 142 00:09:11,100 --> 00:09:18,780 So in order to actually find a method or a specific keyword in your classes if you are using too much 143 00:09:18,780 --> 00:09:23,890 or six you just need to hold the command key plus the key on your keyboard. 144 00:09:24,060 --> 00:09:30,060 Or if you are using any of those machine you need to actually hold the control key plus the key on your 145 00:09:30,060 --> 00:09:30,480 keyboard. 146 00:09:30,490 --> 00:09:30,840 OK. 147 00:09:30,930 --> 00:09:36,610 I can actually search for my method names or keywords for example to a string. 148 00:09:37,650 --> 00:09:39,940 So as you can see here this is this two string Meffert. 149 00:09:39,960 --> 00:09:40,520 OK. 150 00:09:40,530 --> 00:09:46,530 And these are some of the comments that are actually explaining the functionalities of these two unstring 151 00:09:46,530 --> 00:09:47,370 Meffert OK. 152 00:09:47,580 --> 00:09:53,940 So as you can see here it says it returns a syringe containing a concise human readable description 153 00:09:53,970 --> 00:09:54,960 of this object. 154 00:09:54,960 --> 00:09:55,960 OK. 155 00:09:56,400 --> 00:10:04,860 Subclasses are encouraged to override the Smurfette and provide an implementation that takes into account 156 00:10:04,920 --> 00:10:07,480 the object's type and data. 157 00:10:07,590 --> 00:10:14,040 OK the default implementation is equivalent to the following expression as you can see it is this is 158 00:10:14,040 --> 00:10:18,720 the expression that is the default implementation of this Nefert. 159 00:10:18,720 --> 00:10:25,000 OK that's class that gets named plus add sign plus integer data to hex strange. 160 00:10:25,170 --> 00:10:27,760 And then inside the apprentice's as you can see hash code. 161 00:10:27,860 --> 00:10:28,230 OK.