1 00:00:00,210 --> 00:00:03,730 And that inside them I felt I need to put in my statements. 2 00:00:03,840 --> 00:00:08,040 So as you can see here now this method is showing us an error. 3 00:00:08,040 --> 00:00:12,120 So let's actually hover over the area and see what's this error. 4 00:00:12,180 --> 00:00:15,610 This method must return or results of type float. 5 00:00:15,630 --> 00:00:22,990 OK so the return type of on my feet is flawed and we must return a value of type float. 6 00:00:23,010 --> 00:00:23,460 OK. 7 00:00:23,490 --> 00:00:28,390 Inside that method I just want to create a variable of type float. 8 00:00:28,680 --> 00:00:29,400 OK. 9 00:00:29,610 --> 00:00:37,530 And the name of my variable is resolved and I want to actually subtract the value of the one variable 10 00:00:37,920 --> 00:00:40,250 by the value of the norm too valuable. 11 00:00:40,370 --> 00:00:40,820 OK. 12 00:00:40,890 --> 00:00:41,410 OK. 13 00:00:41,550 --> 00:00:52,420 And I can actually return this result by the OK the return type of Meffert is float the name of RMF 14 00:00:52,420 --> 00:00:54,160 it is divided 2 numbers. 15 00:00:54,370 --> 00:00:57,780 And if it is going to actually accept two arguments. 16 00:00:57,780 --> 00:01:02,910 The first argument is of type float and the name of my first argument is now one. 17 00:01:02,940 --> 00:01:08,740 And my second argument is of type float and the name of my argument is number two. 18 00:01:09,180 --> 00:01:16,510 And then inside the method I actually created a variable of type float and the name of my variable is 19 00:01:16,510 --> 00:01:17,240 the result. 20 00:01:17,520 --> 00:01:22,810 And then I assigned the result of this operation here to my body. 21 00:01:22,900 --> 00:01:23,520 OK. 22 00:01:23,670 --> 00:01:25,370 Now one divided by two. 23 00:01:25,410 --> 00:01:29,830 And then in line 56 I returned this result variable. 24 00:01:29,850 --> 00:01:37,210 Ok so this is as variable is of type float and we must return a value of type floats from the Smurfette. 25 00:01:37,230 --> 00:01:41,170 OK because the return type of this method is float. 26 00:01:41,610 --> 00:01:44,620 And that I want to actually call this method from the main method. 27 00:01:44,790 --> 00:01:45,510 So here. 28 00:01:45,510 --> 00:01:52,620 So here because this method returns a value of type float I can actually directly output the value of 29 00:01:52,620 --> 00:01:53,970 that method to the console. 30 00:01:54,120 --> 00:02:02,630 So I just need to type in her system that's out towards Princeton and then inside the prentices I can 31 00:02:02,630 --> 00:02:04,620 just refer to the name of my method. 32 00:02:04,640 --> 00:02:11,010 Divide two numbers and then of to actually pass values to disbenefit So the first value is. 33 00:02:11,060 --> 00:02:12,480 For example 50. 34 00:02:12,560 --> 00:02:16,060 And the second value is for example 15. 35 00:02:16,130 --> 00:02:16,670 OK. 36 00:02:16,760 --> 00:02:20,190 And then at the end of my statement I need to put in a semi-colon. 37 00:02:20,480 --> 00:02:26,550 So now if I run my project as you can see this is the value that is output to the console. 38 00:02:26,570 --> 00:02:29,730 So Fred teep divided by 15 is 2. 39 00:02:29,860 --> 00:02:30,410 OK. 40 00:02:30,410 --> 00:02:35,650 And then I can actually assign the return value of this method to another value of type float. 41 00:02:35,750 --> 00:02:36,890 So I can just type in here. 42 00:02:36,890 --> 00:02:37,560 Float. 43 00:02:37,730 --> 00:02:38,490 OK. 44 00:02:38,810 --> 00:02:47,360 And the name of my variable is result and then I can assign this method to my variable because the Smurfette 45 00:02:47,660 --> 00:02:50,110 returns a value of type float. 46 00:02:50,120 --> 00:02:54,040 So we can actually assign that value to our it. 47 00:02:54,050 --> 00:02:56,230 So I just need to refer to the name of my method. 48 00:02:56,270 --> 00:03:00,170 Divide two numbers and the first value is. 49 00:03:00,170 --> 00:03:01,830 For example 20. 50 00:03:01,970 --> 00:03:04,710 And the second value is for example 2. 51 00:03:04,760 --> 00:03:05,390 OK. 52 00:03:05,600 --> 00:03:06,630 And then I can. 53 00:03:06,740 --> 00:03:12,680 And then I need to put in a semi-colon at the end of my statement and I want to output the value of 54 00:03:12,680 --> 00:03:14,660 this result variable to the console. 55 00:03:14,660 --> 00:03:22,850 So I just need to type in her system start out that print Prince learn and that insight apprentices 56 00:03:22,910 --> 00:03:28,010 I just need to refer to the name of my variable and then I need to put a semi-colon at the end of my 57 00:03:28,010 --> 00:03:28,600 method. 58 00:03:28,820 --> 00:03:34,130 So now if I get on my project as you can see this is the value that is output to the concert numbers 59 00:03:34,130 --> 00:03:36,560 10 20 divided by two is 10. 60 00:03:36,800 --> 00:03:41,220 And in line 23 we are actually outputting data value to the card. 61 00:03:41,270 --> 00:03:45,270 OK so this value is the result of execution of this line of code here. 62 00:03:45,290 --> 00:03:45,910 OK. 63 00:03:46,040 --> 00:03:49,040 So now let me show you another example about MFX. 64 00:03:49,100 --> 00:03:51,340 So I want to create another method here. 65 00:03:51,350 --> 00:04:00,290 So I just need to type in here static and the return type of My method is float and the name of my method 66 00:04:00,350 --> 00:04:01,430 is subtract 67 00:04:04,780 --> 00:04:06,280 numbers. 68 00:04:06,380 --> 00:04:08,010 OK. 69 00:04:08,420 --> 00:04:12,660 And then I want to specify that my method is going to have arguments. 70 00:04:12,710 --> 00:04:19,090 So inside the round brackets I need to put my arguments to the Data Type of my first argument is flawed 71 00:04:20,060 --> 00:04:28,730 and the name of my argument is not a and the Data Type of my second argument is float and the name of 72 00:04:28,730 --> 00:04:31,250 my argument is non B. 73 00:04:31,760 --> 00:04:37,830 And then I need to open and close my method by using an opening curly brace followed by closing curly 74 00:04:37,830 --> 00:04:38,140 braces. 75 00:04:38,140 --> 00:04:38,820 OK. 76 00:04:38,900 --> 00:04:44,690 So inside I'm afraid I can't put my statements so as you can see here it's now showing us an error. 77 00:04:44,690 --> 00:04:49,710 So let's actually hover over the error area and see what's the error. 78 00:04:50,430 --> 00:04:53,930 This method must return a result of type float. 79 00:04:54,230 --> 00:05:00,800 So as you can see here we need to return a value of type floats because the return type of the Smurfette 80 00:05:00,860 --> 00:05:02,000 is float. 81 00:05:02,330 --> 00:05:08,510 So there is another important point here that I want to let you know as you can see here the name of 82 00:05:08,510 --> 00:05:12,420 this method is actually the same as the name of this method. 83 00:05:12,470 --> 00:05:13,050 OK. 84 00:05:13,310 --> 00:05:18,010 So in Java we can actually have different methods but with different arguments. 85 00:05:18,020 --> 00:05:23,680 Ok this method has ains arguments but this method has flawed arguments. 86 00:05:23,710 --> 00:05:29,900 OK the data type of the arguments of this method is named and the data type of the arguments of this 87 00:05:29,900 --> 00:05:31,150 method is flawed. 88 00:05:31,320 --> 00:05:37,720 OK so we can actually have defensemen effets but with defense arguments. 89 00:05:37,740 --> 00:05:43,000 OK so if we can actually have different methods with the same name but with different arguments. 90 00:05:43,010 --> 00:05:48,980 OK we cannot actually have different methods with the same name and with the same arguments. 91 00:05:48,980 --> 00:05:56,620 OK we can actually have for example another method with the same name but without no arguments. 92 00:05:56,780 --> 00:06:01,990 OK so this is a very important point about actually creating it. 93 00:06:02,000 --> 00:06:03,000 My faith in Java. 94 00:06:03,000 --> 00:06:10,850 OK so now I want to actually create a variable here with the floating data type float result and then 95 00:06:10,940 --> 00:06:13,300 I can actually assign a value to my variable. 96 00:06:13,310 --> 00:06:20,030 So now I want to actually assign the result of subtraction of the value of the not a variable from the 97 00:06:20,030 --> 00:06:21,750 value of the not be valuable. 98 00:06:21,770 --> 00:06:28,140 OK so I just need to type in here and am a minus Nahm be OK. 99 00:06:28,310 --> 00:06:31,260 And then I need to put in a semicolon at the end of my statement. 100 00:06:31,610 --> 00:06:35,250 And here I can actually return the result. 101 00:06:35,660 --> 00:06:40,310 OK and then I need to put in a semi-colon at the end of my statement again. 102 00:06:40,340 --> 00:06:43,810 So from the main method I can actually call this method. 103 00:06:43,910 --> 00:06:48,270 OK so inside the main effect I can just type in here. 104 00:06:48,280 --> 00:06:57,050 System that out that Priestland and then inside the method I can actually refer to the name of my method 105 00:06:57,080 --> 00:07:01,700 because this nymphet returns are a value of type float. 106 00:07:01,750 --> 00:07:05,930 We can directly output the return value of this interface to the console. 107 00:07:05,930 --> 00:07:12,210 OK so inside the prentices I can refer to the name of time if it tracked two numbers. 108 00:07:12,230 --> 00:07:15,160 As you can see here it's now showing us two options. 109 00:07:15,440 --> 00:07:20,300 So as you can see these two methods have the same name but different arguments. 110 00:07:20,310 --> 00:07:28,130 OK so you want to choose this method that has arguments with the floating data type. 111 00:07:28,130 --> 00:07:38,270 OK so the value of their first argument is for example to point five and the value of the second argument 112 00:07:38,360 --> 00:07:40,020 is zero point five. 113 00:07:40,080 --> 00:07:43,910 OK and then I need to put in a semi-colon at the end of my statements. 114 00:07:44,300 --> 00:07:47,820 So as you can see here it's now showing us a nasty error. 115 00:07:47,870 --> 00:07:51,720 OK so let's actually posit already area answer in. 116 00:07:51,780 --> 00:07:54,830 If it is not applicable for the arguments. 117 00:07:54,830 --> 00:08:02,030 Double double so as I said earlier in this section you must actually put the F letter at the end of 118 00:08:02,030 --> 00:08:10,030 the numbers in order to actually in order to make those numbers float numbers OK. 119 00:08:10,310 --> 00:08:15,580 Otherwise the eclipse thinks that you are actually using double numbers. 120 00:08:15,610 --> 00:08:21,940 OK so we must actually put the F letter at the end of our numbers. 121 00:08:22,350 --> 00:08:24,200 OK now the error is gone. 122 00:08:24,270 --> 00:08:24,810 OK. 123 00:08:24,910 --> 00:08:29,140 And as you can see this is the value that is output to the consulate. 124 00:08:29,310 --> 00:08:33,620 So 2.5 minus 0.5 is 2.0. 125 00:08:33,660 --> 00:08:36,520 OK so I think that's enough for my efforts. 126 00:08:36,780 --> 00:08:42,630 And if you have any questions please post the discussion in the course and then I'll try my best to 127 00:08:42,630 --> 00:08:44,500 answer your questions. 128 00:08:44,820 --> 00:08:50,380 And thank you very much for watching this tutorial and I'll see you in the next tutorial.