1 00:00:00,190 --> 00:00:04,690 OK as you can see here now this checkbox is checked. 2 00:00:04,830 --> 00:00:05,630 OK. 3 00:00:05,700 --> 00:00:08,470 Now this line of code is executed. 4 00:00:08,700 --> 00:00:10,750 CSX Hellfires that said check it. 5 00:00:10,770 --> 00:00:11,190 True. 6 00:00:11,190 --> 00:00:14,920 So now the value of this power variable is greater than 70. 7 00:00:15,030 --> 00:00:19,340 So this true value is assigned to this Am I healthy valuable. 8 00:00:19,370 --> 00:00:19,870 OK. 9 00:00:20,040 --> 00:00:21,860 So hopefully that makes sense. 10 00:00:21,870 --> 00:00:27,710 Now let's actually again comment out these lines of code here because I want to actually show you another 11 00:00:27,720 --> 00:00:30,510 important point about boolean variables. 12 00:00:30,540 --> 00:00:35,490 So now let's actually again referred to the name of this C x. 13 00:00:35,510 --> 00:00:37,060 Healthy Yes. 14 00:00:37,170 --> 00:00:41,030 Object that said check it. 15 00:00:41,050 --> 00:00:47,550 So as you can see here we need to actually put in a boolean valuable inside Apprentice's of this said 16 00:00:47,550 --> 00:00:48,050 checked my feet. 17 00:00:48,060 --> 00:00:48,460 OK. 18 00:00:48,460 --> 00:00:49,400 True or false. 19 00:00:49,480 --> 00:00:50,050 OK. 20 00:00:50,170 --> 00:00:55,350 You can either putting the value too or we can actually put putting the value for us. 21 00:00:55,480 --> 00:01:00,730 OK so now we can also put in a boolean expression. 22 00:01:01,130 --> 00:01:01,700 OK. 23 00:01:01,810 --> 00:01:07,580 So let's actually put in a pair of round brackets here and in say the prentices. 24 00:01:07,620 --> 00:01:15,670 I can actually specify my boolean expression so I can just type in power is greater than for example 25 00:01:15,700 --> 00:01:16,740 80. 26 00:01:17,180 --> 00:01:17,920 OK. 27 00:01:18,470 --> 00:01:22,800 Questionmark true otherwise false. 28 00:01:24,020 --> 00:01:30,040 So as you can see here by actually putting a boolean expression inside Apprentice's of this said check 29 00:01:30,040 --> 00:01:30,410 the method. 30 00:01:30,410 --> 00:01:31,030 OK. 31 00:01:31,370 --> 00:01:35,780 So does the trick if it actually accepts a value of type Boolean. 32 00:01:36,140 --> 00:01:40,470 So we can either put in the value true or we can actually put in the value for us. 33 00:01:40,490 --> 00:01:43,680 But here we actually put in a boolean expression. 34 00:01:44,000 --> 00:01:47,350 So this expression is going to be evaluated. 35 00:01:47,630 --> 00:01:53,350 And the result of this expression is going to be assigned to these R C S X healthy. 36 00:01:53,360 --> 00:01:54,670 Yes object. 37 00:01:54,680 --> 00:01:55,180 OK. 38 00:01:55,310 --> 00:02:02,660 So if the value of this power integer valuable is greater than 80 the value true is going to be assigned 39 00:02:03,080 --> 00:02:04,690 to this object. 40 00:02:04,760 --> 00:02:13,160 But otherwise if the value of this power integer valuable is not greater than 80 the value for us is 41 00:02:13,160 --> 00:02:15,260 going to be assigned to this. 42 00:02:15,270 --> 00:02:17,270 C is as healthy as object. 43 00:02:17,270 --> 00:02:22,280 OK so now let's actually run our project and see what happens. 44 00:02:22,280 --> 00:02:28,430 So as you can see here now this checkbox is actually checked because the value of this power variable 45 00:02:28,430 --> 00:02:30,650 is greater than 80. 46 00:02:30,800 --> 00:02:36,360 OK the value of this power variable is 97 so 97 is greater than 80. 47 00:02:36,440 --> 00:02:43,300 So the value true is actually assigned to this object and this checkbox is actually checked. 48 00:02:43,550 --> 00:02:50,610 OK so now let's actually first with the name of that see X healthy no object that said check it again. 49 00:02:50,630 --> 00:03:01,260 I had actually putting another boolean expression for example power is greater than for example 80 questionmark 50 00:03:01,380 --> 00:03:05,230 true otherwise false. 51 00:03:05,930 --> 00:03:06,570 OK. 52 00:03:06,750 --> 00:03:12,370 So as you can see here I actually assigned the same boolean expression that I assigned to this C as 53 00:03:12,450 --> 00:03:16,200 a selfie Yes object to this C S S help in no object. 54 00:03:16,200 --> 00:03:16,960 OK. 55 00:03:17,460 --> 00:03:22,870 And if I run my project again as you can see here our application is actually running on this emulator. 56 00:03:23,040 --> 00:03:26,310 And both of these checkboxes are actually checked. 57 00:03:26,360 --> 00:03:27,110 OK. 58 00:03:27,420 --> 00:03:34,320 So here as you can see I specified first of all if the value of this power integer variable is greater 59 00:03:34,320 --> 00:03:40,060 than 80 then the value true is going to be assigned to this C edge X Hilfiger's object. 60 00:03:40,080 --> 00:03:43,270 Otherwise the value for us is going to be assigned to. 61 00:03:43,270 --> 00:03:45,640 C is X healthy object. 62 00:03:45,840 --> 00:03:51,100 And again I assigned that expression to this see X help be no object. 63 00:03:51,390 --> 00:03:57,950 So here I specified that if the value of this power variable is greater than 80 then the value of true 64 00:03:57,960 --> 00:04:01,470 is going to be assigned to the C H x helping object. 65 00:04:01,530 --> 00:04:04,590 Otherwise the value falls is going to be assigned to this. 66 00:04:04,620 --> 00:04:06,800 C is healthy or no object. 67 00:04:07,110 --> 00:04:13,410 But as you can see because the value of this power integer value is greater than 80 then both of these 68 00:04:13,410 --> 00:04:15,160 checkboxes are checked. 69 00:04:16,110 --> 00:04:24,390 So here we can just say if the value of this power variable is not greater than 80 if the value of this 70 00:04:24,390 --> 00:04:29,840 power variable is not greater than 80 then assign the value to this object. 71 00:04:29,850 --> 00:04:33,330 Otherwise assign the value false to this object. 72 00:04:33,330 --> 00:04:36,690 So now let's actually run our project again and see what happens. 73 00:04:36,690 --> 00:04:40,420 So as you can see here now this checkbox is actually checked. 74 00:04:40,650 --> 00:04:48,030 OK so so now as you can see only this checkbox is actually checked ok because the value of this power 75 00:04:48,030 --> 00:04:49,980 variable is greater than 80. 76 00:04:50,040 --> 00:04:53,060 The value is assigned to this object. 77 00:04:53,310 --> 00:05:00,420 And here as you can see I actually specify if the value of this power value but is less than 80 the 78 00:05:00,420 --> 00:05:04,890 value 2 is actually assigned to the C H x no object. 79 00:05:04,890 --> 00:05:08,870 Otherwise the value false is actually assigned to this. 80 00:05:08,950 --> 00:05:10,680 C S as helping object. 81 00:05:10,680 --> 00:05:13,770 So let's actually change the value of this variable. 82 00:05:13,770 --> 00:05:15,670 For example to number 50. 83 00:05:15,870 --> 00:05:18,960 And let's actually run our project and see what happens. 84 00:05:18,960 --> 00:05:25,550 So as you can see here this checkbox is actually checked ok because the value of this power rowdier 85 00:05:25,560 --> 00:05:26,980 bill is less than 80. 86 00:05:27,090 --> 00:05:30,130 As you can see we assign the number 30 to this variable. 87 00:05:30,180 --> 00:05:34,440 So then as you can see now this tick box is actually checked. 88 00:05:34,710 --> 00:05:35,310 OK. 89 00:05:35,730 --> 00:05:38,150 So hopefully that makes sense. 90 00:05:38,220 --> 00:05:43,520 And now let's actually our comment out these lines of code here. 91 00:05:44,490 --> 00:05:45,000 OK. 92 00:05:45,150 --> 00:05:50,310 Now let's actually again refer to the name of this Am I healthy boolean variable. 93 00:05:50,610 --> 00:05:58,970 And let's actually put in an assignment operator here and now I can just put in a pit around brackets. 94 00:05:59,250 --> 00:06:04,780 And here again just typing power is greater than for example 90. 95 00:06:05,310 --> 00:06:05,970 OK. 96 00:06:06,120 --> 00:06:12,750 So if the value of this power integer value is greater than 90 then this expression evaluates to true 97 00:06:13,050 --> 00:06:16,460 and that true value is going to be assigned to this and we help with value. 98 00:06:16,470 --> 00:06:23,430 But otherwise if the value of this power value bet is not greater than 90 then this expression evaluates 99 00:06:23,430 --> 00:06:28,610 to false and that value that false value is going to be assigned to this. 100 00:06:28,620 --> 00:06:29,760 Am I healthy variable. 101 00:06:29,780 --> 00:06:30,390 OK. 102 00:06:30,840 --> 00:06:35,510 So here I can just type in see X healthy yes. 103 00:06:35,610 --> 00:06:41,240 That said checked and here inside Apprentice's I can't just create a boolean expression. 104 00:06:41,280 --> 00:06:46,290 Am I healthy questionmark true otherwise false. 105 00:06:46,770 --> 00:06:47,300 OK. 106 00:06:47,430 --> 00:06:51,840 So as you can see here I am specifying that if the value of this. 107 00:06:51,840 --> 00:06:58,050 Am I healthy boolean variable is true then actually assign the value true to this object. 108 00:06:58,680 --> 00:07:05,130 And if the value of this and I help with variable is not true assign the value falls to this object. 109 00:07:05,190 --> 00:07:07,760 And here again I can just refer to the name of this. 110 00:07:07,800 --> 00:07:10,020 See is a selfie no object. 111 00:07:10,020 --> 00:07:19,350 But that said checked and then again I can just create another boolean variable not Am I healthy questionmark 112 00:07:19,860 --> 00:07:23,080 true otherwise false. 113 00:07:23,670 --> 00:07:24,350 OK. 114 00:07:24,540 --> 00:07:30,930 So as you can see here again I actually putting an boolean expression here and I actually referred to 115 00:07:30,930 --> 00:07:33,480 the name of this am I help people the invariable. 116 00:07:33,660 --> 00:07:41,700 And as you can see I actually put this exclamation mark here in order to negate the value of these boolean 117 00:07:41,700 --> 00:07:44,540 variable so that I can check this condition. 118 00:07:44,790 --> 00:07:48,880 If the value of these are my help is valuable is not true. 119 00:07:49,200 --> 00:07:55,690 Then assign the value true to this rally to this variable Otherwise if the value of these are my Henfrey 120 00:07:55,710 --> 00:08:01,440 valuable is true assign the value falls to this S.H. exhale no object. 121 00:08:01,470 --> 00:08:03,400 OK so let me explain again. 122 00:08:03,450 --> 00:08:08,130 If the value of this am I help be valuable is not true. 123 00:08:08,370 --> 00:08:12,540 Assign the value true to these see objects help healthy no object. 124 00:08:12,540 --> 00:08:17,280 Otherwise if the value of this help is valuable is true. 125 00:08:17,620 --> 00:08:22,110 Assign the value false to this see X Helfen no object. 126 00:08:22,120 --> 00:08:25,610 OK so now let's actually run our project and see what happens. 127 00:08:25,680 --> 00:08:26,150 OK. 128 00:08:26,250 --> 00:08:32,630 Now as you can see our application is actually running on this emulator and now this checkbox is actually 129 00:08:32,640 --> 00:08:33,070 checked. 130 00:08:33,120 --> 00:08:34,040 OK. 131 00:08:34,080 --> 00:08:39,960 So as you can see here the value of this power integer variable is not greater than 90. 132 00:08:40,170 --> 00:08:43,870 So this value is fretty so frailty is not greater than 90. 133 00:08:44,070 --> 00:08:49,960 So the value of this and help be valuable is false and this checkbox is now actually the check. 134 00:08:49,980 --> 00:08:50,520 OK. 135 00:08:50,610 --> 00:08:56,820 In this line of code I am actually specifying that if the value of this healthy variable is actually 136 00:08:56,820 --> 00:09:04,350 true and that means if the value of this power integer valuable is greater than 90 then assign the value 137 00:09:04,350 --> 00:09:07,040 true to the checkbox and check this checkbox. 138 00:09:07,140 --> 00:09:07,690 OK. 139 00:09:07,890 --> 00:09:13,920 Otherwise if this value if this the value of this and I help people the invaluable is not true then 140 00:09:13,950 --> 00:09:16,100 assign the value of dollars to this check box. 141 00:09:16,110 --> 00:09:20,470 So as you can see here this checkbox is actually checked off OK. 142 00:09:20,670 --> 00:09:27,990 And in this line of code here is an inline 86 as you can see in line 86 as you can see. 143 00:09:28,050 --> 00:09:31,470 Now I am specifying that if the value of this. 144 00:09:31,500 --> 00:09:34,430 Am I healthy valuable is not true. 145 00:09:34,500 --> 00:09:35,290 So it is false. 146 00:09:35,310 --> 00:09:38,400 Ok then assign the value true to this check box. 147 00:09:38,400 --> 00:09:45,090 So as you can see this checkbox is actually on otherwise assigned a value falls to the check box. 148 00:09:45,090 --> 00:09:45,740 OK. 149 00:09:45,990 --> 00:09:52,860 So as you can see if the value of this variable is actually true then it's going to actually assign 150 00:09:52,860 --> 00:09:54,410 the value falls to this value. 151 00:09:54,430 --> 00:10:01,380 But because the value of this healthy variable is not true the value of this I mean a healthy variable 152 00:10:01,380 --> 00:10:02,470 is now false. 153 00:10:02,520 --> 00:10:08,220 So it is going to actually assign the value to this object and then it's going to execute this line 154 00:10:08,220 --> 00:10:10,020 of code and then it's going on. 155 00:10:10,020 --> 00:10:11,300 Check this checkbox. 156 00:10:11,460 --> 00:10:12,260 OK. 157 00:10:12,330 --> 00:10:13,800 So hopefully that makes sense.