1 00:00:00,270 --> 00:00:03,570 So now they can see our application is actually running on this emulator. 2 00:00:03,570 --> 00:00:08,250 I can change the value of this five stars rating board to another rally. 3 00:00:08,250 --> 00:00:08,760 OK. 4 00:00:08,820 --> 00:00:11,550 I cannot actually interact with these rating boards here. 5 00:00:11,610 --> 00:00:12,360 OK. 6 00:00:12,720 --> 00:00:14,590 So hopefully that makes sense. 7 00:00:15,000 --> 00:00:19,200 And let's actually go back and say this main activity that I have a fight here and here that actually 8 00:00:19,200 --> 00:00:29,400 create five integer variables so int and the name of these variables is five stars. 9 00:00:29,400 --> 00:00:30,790 Review. 10 00:00:31,510 --> 00:00:32,160 Okay. 11 00:00:32,460 --> 00:00:34,640 And then assign the value zero to this variable. 12 00:00:34,710 --> 00:00:43,260 And for starters you again assign the value zero to the sum of the table. 13 00:00:43,410 --> 00:01:00,630 Int free starts review and assign the value zero to this variable int two stars leave you assign a value 14 00:01:00,630 --> 00:01:10,790 zero to this valuable ain't one star review and then assign the value zero to this variable OK. 15 00:01:10,920 --> 00:01:14,910 So as you can see here we have five different integer variables. 16 00:01:15,150 --> 00:01:20,790 And as you can see we assign number zero values zero to these variables here. 17 00:01:20,790 --> 00:01:26,810 OK so now let's actually typing here PTEN results that said Uncle listener. 18 00:01:26,820 --> 00:01:31,680 Now I want to actually make the Spithead results a listener to the clicks that they use and make on 19 00:01:31,700 --> 00:01:32,590 that button. 20 00:01:32,610 --> 00:01:38,000 So inside the practices I can just type in new view that unclick listener OK. 21 00:01:38,040 --> 00:01:42,430 So now instead of this uncle my Meffert I can put my own codes. 22 00:01:42,600 --> 00:01:48,750 So here inside of this uncreate Smurfette and before this certain click listen and Meffert that we actually 23 00:01:48,750 --> 00:01:54,600 called undisputed results here let's actually create an array of integer numbers. 24 00:01:54,600 --> 00:01:55,170 OK. 25 00:01:55,350 --> 00:02:01,950 So first of all I need to actually specify the Data Type of my Abby and and then I need to actually 26 00:02:01,950 --> 00:02:07,970 specify that I want to actually create an array by putting in a pair of brackets after my type name. 27 00:02:08,200 --> 00:02:08,800 OK. 28 00:02:09,210 --> 00:02:12,590 And now I need to actually give my a name. 29 00:02:12,600 --> 00:02:13,470 So just type in here. 30 00:02:13,470 --> 00:02:24,540 Student reviews OK and then put an assignment operator here and then it's actually instantiate dicere 31 00:02:24,640 --> 00:02:27,580 by actually assigning some values to this Aure. 32 00:02:27,600 --> 00:02:32,660 So just putting in an opening curly brace followed by a closing curly brace and then inside of these 33 00:02:32,670 --> 00:02:33,870 curly braces I need to. 34 00:02:33,870 --> 00:02:37,160 I can actually assign some values to this area. 35 00:02:37,170 --> 00:02:37,640 OK. 36 00:02:37,740 --> 00:02:46,360 So for example the review of for the student in index 0 is 5 3 review for the student index. 37 00:02:46,410 --> 00:02:48,200 Number one is free. 38 00:02:48,630 --> 00:03:02,930 For example 4 2 4 5 1 3 2 5 5 free 2 FREE. 39 00:03:03,150 --> 00:03:03,710 OK. 40 00:03:03,840 --> 00:03:06,800 We need to actually put a semicolon at the end of our statement. 41 00:03:06,810 --> 00:03:10,680 So now inside of this uncle FLSA actually creates a for loop. 42 00:03:10,710 --> 00:03:12,050 So just I've been here for. 43 00:03:12,180 --> 00:03:19,190 And then inside Apprentice's Let's actually create a variable in index and then assign the value zero 44 00:03:19,230 --> 00:03:21,490 to this index variable. 45 00:03:21,570 --> 00:03:22,350 OK. 46 00:03:22,710 --> 00:03:28,430 Until index is less than student reviews that Lynn. 47 00:03:28,650 --> 00:03:28,940 OK. 48 00:03:28,950 --> 00:03:35,280 Here we actually created a condition in which this loop is going to be executed the K until the value 49 00:03:35,280 --> 00:03:40,550 of this index variable is less than the the value of the line of these students reviews. 50 00:03:40,560 --> 00:03:40,840 Ari. 51 00:03:40,870 --> 00:03:41,810 OK. 52 00:03:42,310 --> 00:03:45,060 Index plus plus. 53 00:03:45,060 --> 00:03:49,500 So now let's actually open and close this by using these curly braces. 54 00:03:49,950 --> 00:03:56,020 And here inside of this for loop This actually creates an if statement here. 55 00:03:56,070 --> 00:04:02,780 If student reviews sup index is equal. 56 00:04:02,850 --> 00:04:08,310 So as you can see here double equals operator is actually called equal operator in Java. 57 00:04:08,310 --> 00:04:08,770 OK. 58 00:04:08,880 --> 00:04:11,310 So is equal to 5. 59 00:04:11,460 --> 00:04:17,310 So if the value of the students reviews sup index is equal to number five and then there's actually 60 00:04:17,310 --> 00:04:23,460 the open and closed this if statement by using these curly braces plus plus five stars to review. 61 00:04:23,730 --> 00:04:24,380 OK. 62 00:04:24,390 --> 00:04:30,980 And this means add one value to the value of this five star review and then return that value to me. 63 00:04:30,990 --> 00:04:31,540 OK. 64 00:04:31,650 --> 00:04:34,150 As you can see here it is now showing us an error. 65 00:04:34,170 --> 00:04:38,350 The compiler is complaining here and we need to actually fix this error. 66 00:04:38,400 --> 00:04:41,460 But before that let me try to explain this statement here. 67 00:04:41,640 --> 00:04:43,660 Here I am referring to the name of this array. 68 00:04:43,710 --> 00:04:47,220 Student reviews and here in inside the brackets. 69 00:04:47,420 --> 00:04:50,090 I am just referring to the name of this index variable. 70 00:04:50,100 --> 00:04:50,900 OK. 71 00:04:51,360 --> 00:04:55,720 And here I am saying that if student reviews some index. 72 00:04:55,740 --> 00:05:01,900 So for example the first time that this loop is going to be executed the this index value bet is zero. 73 00:05:01,900 --> 00:05:02,580 OK. 74 00:05:02,940 --> 00:05:07,060 So student reviews sub zero as you can see here. 75 00:05:07,070 --> 00:05:09,690 So the value of this index value bet is zero OK. 76 00:05:09,700 --> 00:05:14,330 And this art piece of court is going to actually give me the value that is inside of the index zero 77 00:05:14,350 --> 00:05:16,180 of these students reviews. 78 00:05:16,540 --> 00:05:22,090 So these five this number five is actually at the index zero of these student reviews. 79 00:05:22,210 --> 00:05:22,710 OK. 80 00:05:22,840 --> 00:05:30,610 So here I am telling that if this value is equal to number five then plus plus five stars review. 81 00:05:30,670 --> 00:05:37,730 So this five star review is actually valuable that we actually created here inside these uncreate method. 82 00:05:37,750 --> 00:05:38,620 OK. 83 00:05:39,160 --> 00:05:41,390 And this variabilis of type integer. 84 00:05:41,620 --> 00:05:42,140 OK. 85 00:05:42,340 --> 00:05:48,280 And here we are saying that as increment the value of this variable by one and then return that value 86 00:05:48,280 --> 00:05:48,880 to me. 87 00:05:48,880 --> 00:05:52,260 So now let's actually solve this problem that is occurring here. 88 00:05:52,260 --> 00:05:52,720 OK. 89 00:05:52,900 --> 00:05:56,530 So just hover your mouse pointer over the error area and see what. 90 00:05:56,580 --> 00:06:02,920 And let's see what's the error cannot assign a value to final variable 5 star review. 91 00:06:02,980 --> 00:06:03,600 OK. 92 00:06:03,850 --> 00:06:09,880 So as you can see here are these five star review value bet is actually declared as final. 93 00:06:09,970 --> 00:06:13,040 And this means that this variable is actually a constant. 94 00:06:13,130 --> 00:06:17,270 OK so if I did it this final achievement here let's see what happens. 95 00:06:17,320 --> 00:06:18,990 Again it is showing us an error. 96 00:06:19,120 --> 00:06:24,960 So let's actually hover the mouse pointer over the error area and see what's the error variable. 97 00:06:24,970 --> 00:06:31,050 For starters the review is accessed video in our class needs to be declared final. 98 00:06:31,360 --> 00:06:36,520 So later in this course I'll talk more about in her classes and in anonymous classes. 99 00:06:36,580 --> 00:06:37,000 OK. 100 00:06:37,090 --> 00:06:40,210 But for now remember that this piece of code. 101 00:06:40,210 --> 00:06:43,470 These are lines of code that actually inside another class. 102 00:06:43,690 --> 00:06:48,760 In order to access the value of these valuable we need to actually declare these variables as final. 103 00:06:48,880 --> 00:06:58,090 OK so in and if I actually declare these variables as final I cannot assign any values to these variables 104 00:06:58,250 --> 00:06:59,980 once I assign a value to them. 105 00:06:59,990 --> 00:07:05,620 OK so in order to solve this problem just select all of these variables. 106 00:07:05,680 --> 00:07:06,280 OK. 107 00:07:06,820 --> 00:07:12,710 And then if you are using any of my choices you need to actually hold the Comanche and then press on 108 00:07:13,030 --> 00:07:16,330 the delay the x key on your keyboard in order to cut. 109 00:07:16,390 --> 00:07:21,670 These are statements these lines of code and if you are using a Windows machine you need to actually 110 00:07:21,670 --> 00:07:28,440 hold the control key and then press on the letter X key on your keyboard in order to cut these these 111 00:07:28,570 --> 00:07:29,360 lines of code. 112 00:07:29,500 --> 00:07:36,540 Or you can actually right click on these lines of code and then you can actually cut here. 113 00:07:36,550 --> 00:07:36,990 OK. 114 00:07:37,060 --> 00:07:37,870 As you can see. 115 00:07:37,870 --> 00:07:39,000 Click on that. 116 00:07:39,760 --> 00:07:44,570 And here let's actually put these values inside of this main activity class. 117 00:07:45,020 --> 00:07:45,300 OK. 118 00:07:45,310 --> 00:07:51,490 And here in order to paste those lines of code if you are using of my choice 6 you need to actually 119 00:07:51,490 --> 00:07:55,320 hold the comma and key and then on the leader Vicci on your keyboard. 120 00:07:55,420 --> 00:08:00,310 Or if you are using a Windows machine you need to actually hold the control key and then press and delay 121 00:08:00,320 --> 00:08:01,830 that BICI on your keyboard. 122 00:08:02,020 --> 00:08:05,700 Right click and this area here and then click on paste here. 123 00:08:05,740 --> 00:08:06,690 OK. 124 00:08:07,000 --> 00:08:09,270 So now as you can see the error is gone. 125 00:08:09,560 --> 00:08:13,070 OK let's actually create another if statement here. 126 00:08:13,090 --> 00:08:20,690 If student reviews sup index OK is equal to number four. 127 00:08:20,830 --> 00:08:26,890 So analysis should be open and closed this if statement by using these curly braces inside of this if 128 00:08:26,890 --> 00:08:28,170 statement. 129 00:08:28,300 --> 00:08:32,230 Just typing here plus plus four stars to review. 130 00:08:32,710 --> 00:08:39,400 And here I am saying that if the value that is inside of this specific index of these students reviews 131 00:08:39,730 --> 00:08:47,020 is equal to number four then increment this the value of these for stars review value. 132 00:08:47,070 --> 00:08:50,170 OK this is our Forrestal's review valuable. 133 00:08:50,440 --> 00:08:51,620 OK. 134 00:08:51,940 --> 00:08:54,250 Again let's actually create another if statement. 135 00:08:54,290 --> 00:09:08,200 If student reviews some index is equal to number three it increment the value of the freestylers variable 136 00:09:08,200 --> 00:09:09,640 and then return that value to me. 137 00:09:09,640 --> 00:09:10,240 OK. 138 00:09:10,510 --> 00:09:21,790 If student reviews sup index is equal to number two then increment the value of the twister's review 139 00:09:21,980 --> 00:09:25,630 variable by 1 and then return that value to me. 140 00:09:25,750 --> 00:09:35,620 And if the value of this student reviews sub index is equal to number 1 then increment the value of 141 00:09:35,620 --> 00:09:40,650 the one star review variable by one and then return that value to me. 142 00:09:40,810 --> 00:09:41,410 OK. 143 00:09:41,410 --> 00:09:46,210 So after this for loop as you can see this is the end the curly brace of this for a loop. 144 00:09:46,270 --> 00:09:52,350 OK here now I can actually assign some values to those takes you. 145 00:09:52,370 --> 00:09:55,190 OK I can actually output some values to the screen.