1 00:00:00,510 --> 00:00:02,160 Double that part stubble. 2 00:00:02,280 --> 00:00:08,490 So as you can see we have a class called Double And this is actually a static effect of this of this 3 00:00:08,490 --> 00:00:09,460 class stubble. 4 00:00:09,960 --> 00:00:15,660 And we are actually calling this Meffert and this class and here we are actually putting this string 5 00:00:15,660 --> 00:00:18,430 value as a parameter to these Meffert. 6 00:00:18,450 --> 00:00:18,920 OK. 7 00:00:18,960 --> 00:00:22,020 Double parse double and the string value. 8 00:00:22,020 --> 00:00:25,700 Here we are actually converting this string value to a double value. 9 00:00:25,980 --> 00:00:26,490 OK. 10 00:00:26,580 --> 00:00:34,470 Again let's actually create another double variable number two assignment operator double that part 11 00:00:34,490 --> 00:00:42,790 stubble EDT Nahm to dot text dot to a string. 12 00:00:44,090 --> 00:00:44,880 OK. 13 00:00:45,380 --> 00:00:55,180 Again another double variable double Nahm three assignment operator double that part's double EDT. 14 00:00:55,410 --> 00:00:56,880 Now I'm free. 15 00:00:57,160 --> 00:00:57,940 That's good. 16 00:00:57,950 --> 00:01:01,130 Text that too strict. 17 00:01:01,520 --> 00:01:02,170 OK. 18 00:01:02,420 --> 00:01:04,020 So hopefully that makes sense. 19 00:01:04,100 --> 00:01:10,730 Here I am actually reading the values of these textfield and I am actually converting that values to 20 00:01:10,730 --> 00:01:16,320 add double value and I am assigning that those double values to these are double value. 21 00:01:16,430 --> 00:01:17,130 OK. 22 00:01:17,540 --> 00:01:24,530 So let's actually create another double variable and the name of this variable is result. 23 00:01:25,290 --> 00:01:35,620 Assignment operator and now I want to actually get the maximum number of these free double values. 24 00:01:35,630 --> 00:01:36,060 OK. 25 00:01:36,110 --> 00:01:39,550 So let's actually create Smurfit here. 26 00:01:39,980 --> 00:01:47,610 Outside of these uncreate method and inside of these main activity class let's actually create a method. 27 00:01:47,690 --> 00:01:48,590 Ok everyone. 28 00:01:48,590 --> 00:01:52,000 Now let's actually create a method here public. 29 00:01:52,940 --> 00:01:57,320 And as you can see that the access modifier of this method is public. 30 00:01:57,530 --> 00:02:05,090 And now I want to actually specify a return type before my method double and the name of my method is 31 00:02:05,090 --> 00:02:07,510 get the maximum. 32 00:02:08,780 --> 00:02:14,740 And then in say the prentices I want to actually specify that this method is going to accept some arguments. 33 00:02:14,760 --> 00:02:15,260 OK. 34 00:02:15,350 --> 00:02:23,740 Double and the name of my first argument is number one comma double. 35 00:02:24,270 --> 00:02:26,880 Number two comma. 36 00:02:27,080 --> 00:02:29,090 Double free. 37 00:02:29,350 --> 00:02:30,040 OK. 38 00:02:30,440 --> 00:02:35,410 And then I need to actually open and close my method by using these curly braces. 39 00:02:35,780 --> 00:02:40,370 And here I want to actually get the maximum of these free double values. 40 00:02:40,370 --> 00:02:40,890 OK. 41 00:02:41,120 --> 00:02:49,680 So first let's actually create a WRGA double and the name of my variable is the maximum value. 42 00:02:49,760 --> 00:02:56,720 And then I put an assignment operator here and then I can actually assign one of these arguments to 43 00:02:56,720 --> 00:02:57,830 my valuable. 44 00:02:57,830 --> 00:03:04,750 So I prefer to assign numbers but not one argument to my variable number one semicolon. 45 00:03:04,760 --> 00:03:11,780 Here I am actually assuming that the value of this number one value number one argument is the maximum 46 00:03:11,780 --> 00:03:12,290 value. 47 00:03:12,290 --> 00:03:13,000 OK. 48 00:03:13,460 --> 00:03:23,230 So let's actually create an if statement here if Number two is greater than the maximum value. 49 00:03:23,810 --> 00:03:24,290 OK. 50 00:03:24,410 --> 00:03:29,940 The maximum value assignment operator 2 OK. 51 00:03:30,440 --> 00:03:37,970 Here I am actually specifying that if the value of this Nahm two argument is greater than the value 52 00:03:37,970 --> 00:03:46,000 of this the maximum value then assign the value of this number two variables to the maximum value value. 53 00:03:46,090 --> 00:03:46,600 OK. 54 00:03:46,670 --> 00:03:52,760 And here I am actually saying that if the value of this number two argument is greater than the value 55 00:03:52,760 --> 00:04:00,530 of this the maximum value then assign the value of this Nahm to argument to this at the maximum maximum 56 00:04:00,530 --> 00:04:01,450 value of value. 57 00:04:01,470 --> 00:04:02,070 OK. 58 00:04:02,480 --> 00:04:05,030 That's actually create another IIF statement here. 59 00:04:05,120 --> 00:04:16,400 If the value of this free variable is greater than the value of this the maximum value then assign the 60 00:04:16,400 --> 00:04:19,790 value of the is now free variable to this. 61 00:04:19,870 --> 00:04:21,410 The maximum value variable. 62 00:04:21,410 --> 00:04:23,120 Ok now I'm free. 63 00:04:23,900 --> 00:04:24,650 OK. 64 00:04:24,890 --> 00:04:30,830 So here I need to actually return a value of type double from the Smurfette. 65 00:04:30,830 --> 00:04:35,590 So I can't just type in return the maximum value. 66 00:04:35,600 --> 00:04:37,130 OK. 67 00:04:37,130 --> 00:04:39,180 So hopefully that makes sense. 68 00:04:39,770 --> 00:04:41,450 And let me actually explain again. 69 00:04:41,450 --> 00:04:47,660 First of all we assumed that the value of this number one variable is the maximum value and that we 70 00:04:47,660 --> 00:04:50,460 created two statements here. 71 00:04:50,870 --> 00:04:57,530 And first of all we said that if the value of this not too valuable is greater than the value of these 72 00:04:57,620 --> 00:05:04,170 are the maximum value variable then assign the value of this not to argument to this the maximum value 73 00:05:04,190 --> 00:05:11,400 variable and if the value of this non-free variable this argument is greater than the value of this 74 00:05:11,400 --> 00:05:18,470 stomach the maximum value variable then assign the value of this no free variable to the maximum value 75 00:05:18,470 --> 00:05:19,000 variable. 76 00:05:19,000 --> 00:05:19,580 Okay. 77 00:05:19,580 --> 00:05:23,930 And then with the deterrent value of this the maximum value value of it. 78 00:05:24,040 --> 00:05:25,190 Okay. 79 00:05:25,880 --> 00:05:27,910 So hopefully that makes sense. 80 00:05:28,100 --> 00:05:31,540 And let's actually go back inside this uncle explain it. 81 00:05:31,730 --> 00:05:40,190 And here I can just typing get the maximum and now I need to make sure the passing free double values. 82 00:05:40,280 --> 00:05:52,910 So I want to actually refer to these is Nahm number one comma not too comma free and that I need to 83 00:05:52,910 --> 00:06:00,470 actually put a semi-colon at the end of my statement and then I want to actually output these values 84 00:06:00,470 --> 00:06:02,800 to the screen so I can just type in. 85 00:06:02,810 --> 00:06:11,050 So here I can just type anti-X the result that said text and then I can just refer to the name of this 86 00:06:11,090 --> 00:06:14,390 result variable result. 87 00:06:14,570 --> 00:06:22,100 And because this variable is actually of type double we cannot assign that value directly into this 88 00:06:22,160 --> 00:06:24,080 RTX the result object. 89 00:06:24,080 --> 00:06:27,770 So we need to actually convert this value to our string value. 90 00:06:27,770 --> 00:06:32,200 So I can just put in our Plus operator here. 91 00:06:32,300 --> 00:06:34,510 And then I can just put it into double quotes here. 92 00:06:34,520 --> 00:06:35,150 OK. 93 00:06:35,150 --> 00:06:39,200 So as you can see now this value is actually converted to a string value. 94 00:06:39,340 --> 00:06:39,930 OK. 95 00:06:39,980 --> 00:06:43,090 Now let's actually run our project and see the results. 96 00:06:43,190 --> 00:06:44,110 Ok everyone. 97 00:06:44,150 --> 00:06:48,560 Now as you can see our application is actually running on this emulator. 98 00:06:48,710 --> 00:06:53,410 So here for the first textfield I can just put in a value. 99 00:06:53,660 --> 00:06:55,630 So just click on this textfield. 100 00:06:55,760 --> 00:07:00,510 And now as you can see the virtual keyboard is actually appearing here. 101 00:07:00,710 --> 00:07:07,130 So just click on these numbers and I can just assign a number here for example number for 50 and for 102 00:07:07,130 --> 00:07:15,290 the second textfield I can assign another value for example number 70 and for the first textfield I 103 00:07:15,290 --> 00:07:16,550 can assign an added value. 104 00:07:16,550 --> 00:07:18,410 For example number 100. 105 00:07:18,670 --> 00:07:19,300 OK. 106 00:07:19,550 --> 00:07:26,960 And if you want to disappear this keyboard you can just click on this little triangle here and then 107 00:07:27,140 --> 00:07:29,960 you can just click and this get the maximum value. 108 00:07:29,990 --> 00:07:37,240 So as you can see them the maximum value of these free text fields is numbered 100. 109 00:07:37,250 --> 00:07:38,030 OK. 110 00:07:38,030 --> 00:07:44,840 So let's actually change the value of this textfield here so I can just delete this number and I can 111 00:07:44,840 --> 00:07:49,040 assign another value for example number 400. 112 00:07:49,700 --> 00:07:56,870 And there's actually I click on this get the maximum value here as you can see now the maximum value 113 00:07:56,870 --> 00:07:58,160 is 400. 114 00:07:58,220 --> 00:08:02,910 And this data point zero here means that this value is actually a double value. 115 00:08:02,990 --> 00:08:03,910 OK. 116 00:08:04,490 --> 00:08:06,620 So hopefully that makes sense. 117 00:08:06,620 --> 00:08:08,830 Let's actually go back inside our coats. 118 00:08:08,990 --> 00:08:14,630 Main activity that will find here and after this are set on a quick listen in Meffert as you can see 119 00:08:14,630 --> 00:08:23,300 after the end of this method I can refer to the name of these PTEN secure random number that set unclick 120 00:08:23,360 --> 00:08:29,050 listener new view that Uncle is listening. 121 00:08:29,080 --> 00:08:29,980 OK. 122 00:08:30,550 --> 00:08:35,500 So as you can see here now we can actually put our own coats inside of this method. 123 00:08:35,500 --> 00:08:40,140 So now let's actually create an object from the secure random class. 124 00:08:40,270 --> 00:08:47,920 So Sahira and M-class is a class in Java so secure random class is actually a class a predefined class 125 00:08:47,920 --> 00:08:55,960 in Java that actually produces secure random numbers OK which we can actually use in your own games 126 00:08:56,020 --> 00:08:58,300 or your own applications. 127 00:08:58,300 --> 00:08:58,860 OK. 128 00:08:59,080 --> 00:09:05,680 And I highly recommend you that you actually use this class this class if you want to produce a secure 129 00:09:05,940 --> 00:09:09,390 our random numbers for your applications. 130 00:09:09,400 --> 00:09:12,590 So here I actually referred to the name of this class now. 131 00:09:12,640 --> 00:09:18,550 And as you can see here if I click on these free dots here as you can see now these are the classes 132 00:09:19,090 --> 00:09:21,220 that you actually imported into a file. 133 00:09:21,430 --> 00:09:23,230 And one of these are classes. 134 00:09:23,230 --> 00:09:29,670 If you have these secure random class that is inside the Java security package and this class is inside 135 00:09:29,680 --> 00:09:30,430 of this package. 136 00:09:30,430 --> 00:09:35,910 Ok secure random and we can actually use this class here. 137 00:09:35,980 --> 00:09:44,200 So secure random and the name of our object is secure random number OK. 138 00:09:44,230 --> 00:09:51,550 Assignment operator new and again I need to refer to the name of this secure random class. 139 00:09:51,970 --> 00:09:56,300 And now let's actually create an if statement here.