1 00:00:00,140 --> 00:00:00,880 OK. 2 00:00:01,440 --> 00:00:08,100 And then we can actually add to the value of this brave instance valuable to this string value here. 3 00:00:08,100 --> 00:00:16,020 Plus strange that format and then I first of all I need to actually specify the formatting instructions 4 00:00:16,020 --> 00:00:16,500 here. 5 00:00:16,620 --> 00:00:22,990 So first of all I put into double quotes here and then present as Colan percent B. 6 00:00:23,470 --> 00:00:30,010 Ok so now I need to actually specify the arguments for this for these tokens. 7 00:00:30,330 --> 00:00:37,140 So here I put in a two double quotes here and then I actually use a string literal here. 8 00:00:37,560 --> 00:00:38,720 OK. 9 00:00:39,060 --> 00:00:40,920 Our brave 10 00:00:43,770 --> 00:00:48,480 OK and then I put a comma here is brave. 11 00:00:48,950 --> 00:00:49,450 OK. 12 00:00:49,510 --> 00:00:52,800 So as you can see here with just one line of code. 13 00:00:52,940 --> 00:01:00,670 Now we actually are inheriting all of those features that are inside this math class and inside this 14 00:01:00,700 --> 00:01:05,310 math class we are actually inheriting all of those features that are inside this Animal class. 15 00:01:05,410 --> 00:01:08,590 And in this way our codes are more maintainable. 16 00:01:08,770 --> 00:01:12,480 And this is more powerful than actually duplicating quotes. 17 00:01:12,520 --> 00:01:16,040 In this way we're actually using the power of inheritance. 18 00:01:16,060 --> 00:01:26,270 Now we know that we can actually use this power in order to create more maintainable applications. 19 00:01:26,290 --> 00:01:27,070 OK. 20 00:01:27,100 --> 00:01:32,710 So as you can see here it's now showing us an error because we actually changed the access modifier 21 00:01:32,770 --> 00:01:37,090 of this instance variables inside this Animal class to private. 22 00:01:37,090 --> 00:01:44,280 So we need to actually change these instance variables to another name. 23 00:01:44,380 --> 00:01:53,170 For example this name instance variable can be name this Karlo instance variable can be Jets color and 24 00:01:53,260 --> 00:01:59,050 this amount of speed instance variable can be IMAO get amount of speed. 25 00:01:59,500 --> 00:02:05,840 And here we can actually change the name of this instance variable to get amount of power. 26 00:02:06,150 --> 00:02:09,040 OK so now the error is gone. 27 00:02:09,340 --> 00:02:11,770 And let's go back inside this line class again. 28 00:02:11,770 --> 00:02:16,850 Now we did manage to actually put our own implementations inside these two string method. 29 00:02:16,870 --> 00:02:17,540 OK. 30 00:02:17,860 --> 00:02:20,670 So let's go back inside this main activity that Java here. 31 00:02:21,100 --> 00:02:29,890 And now let's actually create an object from this lion class lion my lion and then I put an assignment 32 00:02:29,950 --> 00:02:37,780 operator here Neo lion and here I need to actually pass some values to this our constructor here. 33 00:02:37,780 --> 00:02:38,620 OK. 34 00:02:39,160 --> 00:02:44,830 So as you can see here are the constructor that is inside this line class is going to be called when 35 00:02:44,830 --> 00:02:47,840 ever we actually create an object from this low class. 36 00:02:47,850 --> 00:02:50,720 I need to actually specify the name of this line. 37 00:02:51,190 --> 00:02:54,940 So the name of my line is my line. 38 00:02:55,570 --> 00:03:00,270 And then I need to specify the color of my lion for example. 39 00:03:01,060 --> 00:03:02,580 Golden. 40 00:03:03,620 --> 00:03:04,390 OK. 41 00:03:04,720 --> 00:03:10,330 And then I need to specify the amount of speed of my lion for example 90. 42 00:03:11,380 --> 00:03:16,950 And then I need to actually specify the amount of power of my lion for example 300. 43 00:03:17,200 --> 00:03:21,470 And then I need to actually specify the number of legs for. 44 00:03:22,270 --> 00:03:24,800 And then I need to actually specify a value for this. 45 00:03:24,800 --> 00:03:26,570 Can hunt other animals. 46 00:03:26,620 --> 00:03:27,340 True. 47 00:03:27,670 --> 00:03:34,310 And then I need to actually specify a value for this is brave boolean variable OK so true. 48 00:03:34,900 --> 00:03:35,720 OK. 49 00:03:36,490 --> 00:03:44,610 And now I can actually type in here TXI the line that said text. 50 00:03:45,010 --> 00:03:51,870 And here I can actually fair to the name of this my life an object that is three in Meffert here. 51 00:03:51,880 --> 00:03:52,450 OK. 52 00:03:52,630 --> 00:03:55,690 And now if I run my project let's see what happens. 53 00:03:55,690 --> 00:04:00,610 So as you can see here now these are the values that are out that are outputted here. 54 00:04:00,610 --> 00:04:02,510 OK name my lion. 55 00:04:02,590 --> 00:04:05,840 Actually the color golden speed 90. 56 00:04:05,860 --> 00:04:13,690 Power 300 number of legs for fight true animal value are 27000 brave. 57 00:04:13,720 --> 00:04:14,260 True. 58 00:04:14,470 --> 00:04:15,160 OK. 59 00:04:15,920 --> 00:04:17,740 So hopefully that makes sense. 60 00:04:17,760 --> 00:04:20,200 I think that's enough for this the whole deal. 61 00:04:20,420 --> 00:04:26,380 And in the next tutorial we can actually continue building which are our fourth Android application. 62 00:04:26,480 --> 00:04:27,040 OK. 63 00:04:27,170 --> 00:04:32,300 So if you have any questions please post the discussion in the course and then I'll do my best to answer 64 00:04:32,300 --> 00:04:33,350 your questions. 65 00:04:33,680 --> 00:04:37,970 And thank you very much for watching and I'll see you in the next tutorial.