1 00:00:00,250 --> 00:00:07,320 How you live on in this theater you're really going to go ahead and create a project called converter. 2 00:00:07,320 --> 00:00:07,970 OK. 3 00:00:08,160 --> 00:00:15,800 So first we need to create a Java project so click on this file new and then click on Java project. 4 00:00:15,810 --> 00:00:16,550 OK. 5 00:00:16,920 --> 00:00:20,370 And for the project name just type in here converter 6 00:00:23,040 --> 00:00:23,770 OK. 7 00:00:24,080 --> 00:00:26,980 And here you need to click on this finished button here. 8 00:00:26,990 --> 00:00:27,610 OK. 9 00:00:27,860 --> 00:00:31,370 So as you can see here our project is now created. 10 00:00:31,610 --> 00:00:36,590 So we need a class for our project so you can right click on this RC for that. 11 00:00:36,770 --> 00:00:39,610 And then new and click on these class. 12 00:00:39,650 --> 00:00:40,640 OK. 13 00:00:41,300 --> 00:00:47,520 So for the name of our class just type in here converter OK. 14 00:00:47,720 --> 00:00:52,780 And the package name as you know we need to reverse domain here. 15 00:00:52,910 --> 00:00:57,050 So just type in here com that mortiser. 16 00:00:57,700 --> 00:00:58,300 OK. 17 00:00:58,670 --> 00:01:04,100 And at the end of your package name just put your project name. 18 00:01:04,130 --> 00:01:05,180 OK. 19 00:01:06,140 --> 00:01:12,130 Convertors and for the modifiers to the public. 20 00:01:12,570 --> 00:01:16,810 And here check this checkbox that says public static void main method. 21 00:01:16,830 --> 00:01:17,410 OK. 22 00:01:17,550 --> 00:01:22,220 This is going to be our starting point for running our Java code. 23 00:01:22,230 --> 00:01:22,750 OK. 24 00:01:22,860 --> 00:01:25,790 And then click on the swinish button here. 25 00:01:27,540 --> 00:01:31,290 So as you can see here our project is now created. 26 00:01:31,290 --> 00:01:34,630 So first let me actually delete this comment here. 27 00:01:35,070 --> 00:01:40,840 And in order to make this a little area where you are just double click on these converter that Java 28 00:01:40,890 --> 00:01:42,660 tab here. 29 00:01:42,660 --> 00:01:49,480 And as you can see our little area is now much wider and we can write our codes here. 30 00:01:49,550 --> 00:01:49,880 OK 31 00:01:54,490 --> 00:01:56,340 so now I'm going to actually declare. 32 00:01:56,410 --> 00:02:01,640 So the data type of my variable is float. 33 00:02:02,250 --> 00:02:02,950 OK. 34 00:02:03,310 --> 00:02:09,820 And the name of my variable is farenheit. 35 00:02:09,990 --> 00:02:13,080 OK and then I assign a value to my variable here. 36 00:02:13,080 --> 00:02:14,930 For example 65. 37 00:02:14,970 --> 00:02:15,770 OK. 38 00:02:16,170 --> 00:02:23,370 And then at the end of my statement I need to put in a semicolon in order to end my statement here. 39 00:02:23,370 --> 00:02:24,010 OK. 40 00:02:24,330 --> 00:02:29,280 So now you want to output the value of this variable to the concert. 41 00:02:29,280 --> 00:02:29,800 OK. 42 00:02:30,090 --> 00:02:39,840 So just type in here system that out that princeling and then inside Apprentice's you just need to refer 43 00:02:39,840 --> 00:02:42,930 to the name of the variable in order to read its value. 44 00:02:42,930 --> 00:02:44,010 OK. 45 00:02:44,430 --> 00:02:48,010 So at the end of your statement just put in a semi-colon. 46 00:02:48,210 --> 00:02:54,570 And if I run my projects now as you can see it outputs the value of this variable to the concert. 47 00:02:54,570 --> 00:02:55,080 OK. 48 00:02:55,380 --> 00:03:00,540 So the data type of my variable is flawed and it outputs a decimal number here. 49 00:03:00,550 --> 00:03:02,710 OK sixty five point zero. 50 00:03:02,770 --> 00:03:07,910 OK so now we want to convert Fahrenheit into Celsius. 51 00:03:07,920 --> 00:03:08,430 OK. 52 00:03:08,580 --> 00:03:13,840 First we need to subtract 42 from Farenheit value. 53 00:03:13,860 --> 00:03:14,530 OK. 54 00:03:14,760 --> 00:03:19,010 So here in order to subtract first the two from this value. 55 00:03:19,350 --> 00:03:23,310 I just need to refer to the name of my variable for hide. 56 00:03:23,390 --> 00:03:23,880 OK. 57 00:03:24,000 --> 00:03:31,050 And then I put in an assignment operator remember that I told you about this operator here. 58 00:03:31,050 --> 00:03:33,250 This is not an equal operator. 59 00:03:33,270 --> 00:03:35,550 This is an assignment operator OK. 60 00:03:35,670 --> 00:03:38,830 So here I refer to the name of my variable here. 61 00:03:38,850 --> 00:03:39,800 OK farenheit. 62 00:03:39,870 --> 00:03:40,540 OK. 63 00:03:40,980 --> 00:03:52,380 So now in order to subtract 52 from this variable here I just again the first name of my variable OK. 64 00:03:52,860 --> 00:04:00,890 Now I need to put in a minus operator here and then just type in here first through and then putting 65 00:04:00,890 --> 00:04:03,410 in a semicolon at the end of my statement here. 66 00:04:03,560 --> 00:04:04,090 OK. 67 00:04:04,220 --> 00:04:09,560 And here I am subtracting 52 from the value of these farenheit. 68 00:04:09,560 --> 00:04:10,800 Valuable here. 69 00:04:11,090 --> 00:04:11,720 OK. 70 00:04:11,990 --> 00:04:14,250 The value of this Farenheit is 65. 71 00:04:14,270 --> 00:04:14,800 OK. 72 00:04:14,990 --> 00:04:22,520 And then I am assigning the result of this operation here to the Farenheit variable here. 73 00:04:22,560 --> 00:04:31,430 OK so now if I actually output the value of this variable to the console system that out that print. 74 00:04:33,360 --> 00:04:37,480 And then inside Apprentice's I need to refer to the name of my variable. 75 00:04:38,190 --> 00:04:42,030 And then at the end of my statement I need to put in a semicolon. 76 00:04:42,030 --> 00:04:49,700 So if I wrote on my project as you can see the first value that is output to the console is 65. 77 00:04:49,800 --> 00:04:50,330 OK. 78 00:04:50,520 --> 00:04:57,420 Because in this line of code as you can see because when this line of code is executed the value of 79 00:04:57,420 --> 00:04:59,230 this variable is 65. 80 00:04:59,250 --> 00:05:00,120 OK. 81 00:05:00,570 --> 00:05:10,290 And then in line 11 we actually subtract 52 from the value of this variable which is 65 and then we 82 00:05:10,380 --> 00:05:19,330 assign the value of this variable to the left hand side of the operator which is again Farenheit variable. 83 00:05:19,650 --> 00:05:25,440 And here in line first in the food the value of this variable to the console. 84 00:05:25,570 --> 00:05:26,180 OK. 85 00:05:26,430 --> 00:05:27,760 Which is 43 free. 86 00:05:27,780 --> 00:05:32,880 So this is a really important point in assigning values to your valuables. 87 00:05:32,880 --> 00:05:33,520 OK. 88 00:05:33,960 --> 00:05:41,850 So now that we have actually subtracted first the two from Farenheit value and we need to actually divide 89 00:05:42,300 --> 00:05:43,680 the answer by nine. 90 00:05:43,800 --> 00:05:44,680 OK. 91 00:05:45,060 --> 00:05:49,640 So we need to divide this value OK by nine. 92 00:05:49,650 --> 00:05:57,480 So here again I just need to refer to the name of my variable here OK because I want to assign a value 93 00:05:57,480 --> 00:05:58,600 to this variable here. 94 00:05:58,650 --> 00:05:59,420 OK. 95 00:05:59,880 --> 00:06:05,330 And now if you want to divide the value of this Farenheit variable by night. 96 00:06:05,370 --> 00:06:05,900 OK. 97 00:06:05,910 --> 00:06:07,910 So now again I just need to type in here. 98 00:06:08,070 --> 00:06:11,340 Fahrenheit divided by night. 99 00:06:11,340 --> 00:06:15,250 And then at the end of my statement I need to put in a semicolon. 100 00:06:15,660 --> 00:06:22,470 So now if I want to output the value of this variable to the console I just need to type in her system 101 00:06:22,980 --> 00:06:31,140 that out that print line and then inside Apprentice's I just need to refer to the name of my variable. 102 00:06:31,150 --> 00:06:31,980 OK. 103 00:06:32,320 --> 00:06:34,060 So again farenheit. 104 00:06:34,240 --> 00:06:41,070 So I use the autocomplete feature of the eclipse in order to help me to write my name. 105 00:06:41,260 --> 00:06:41,810 OK. 106 00:06:41,950 --> 00:06:45,150 And then at the end of my statement I ended up with a semi-colon. 107 00:06:45,160 --> 00:06:45,790 OK. 108 00:06:46,270 --> 00:06:52,910 So now if I run my project as you can see it's going to output this value to the console. 109 00:06:53,000 --> 00:06:59,330 OK this value is the result of this operation here Farenheit divided by 9. 110 00:06:59,660 --> 00:07:05,800 OK so free divided by nine is equal to this value here. 111 00:07:05,890 --> 00:07:06,310 OK. 112 00:07:06,370 --> 00:07:14,470 So now as you can see in this line of code we actually outputted the value of this variable to the console. 113 00:07:14,680 --> 00:07:15,600 OK. 114 00:07:18,220 --> 00:07:23,240 And finally we need to multiply that answer by 5. 115 00:07:23,440 --> 00:07:23,970 OK. 116 00:07:24,100 --> 00:07:30,090 So now we need to multiply this value by five. 117 00:07:30,190 --> 00:07:32,370 OK. 118 00:07:32,410 --> 00:07:36,680 So again here I just need to type in here farenheit. 119 00:07:36,790 --> 00:07:39,890 I just need to refer to the name of my valuable. 120 00:07:40,090 --> 00:07:40,650 OK. 121 00:07:40,870 --> 00:07:49,260 And again in order to multiply this variable by 5 I just need to refer to the name of my variable farenheit. 122 00:07:49,640 --> 00:07:50,810 OK. 123 00:07:50,890 --> 00:07:53,190 Multiplied by 5. 124 00:07:53,770 --> 00:07:56,880 And then at the end of my statement I need to put in a semi-colon. 125 00:07:56,900 --> 00:07:57,460 OK. 126 00:07:57,760 --> 00:08:05,290 So here if I actually output the value of this variable to the console system the out that print Len 127 00:08:07,200 --> 00:08:11,430 and then inside the prentices I just need to refer to the name of my variable. 128 00:08:12,000 --> 00:08:16,000 And at the end of your statement you need to put in a semi-colon OK. 129 00:08:16,170 --> 00:08:21,690 So if I run my project now as you can see it outputs this value to the console. 130 00:08:21,720 --> 00:08:22,650 OK. 131 00:08:23,070 --> 00:08:26,930 So this value is the result of this operation here. 132 00:08:27,250 --> 00:08:27,940 OK. 133 00:08:28,050 --> 00:08:32,510 We have successfully converted this Fahrenheit value into Celsius. 134 00:08:32,520 --> 00:08:32,950 OK. 135 00:08:33,090 --> 00:08:39,630 I just need to use the plus operator in order to concatenate those variables or text to get that. 136 00:08:39,630 --> 00:08:40,090 OK. 137 00:08:40,260 --> 00:08:45,270 So just putting into double quotes here and then inside the double quotes you just need to type in the 138 00:08:45,270 --> 00:08:46,050 text. 139 00:08:46,050 --> 00:08:51,500 So first I put in a space here and then I just have been here. 140 00:08:51,520 --> 00:08:57,690 Degrees Celsius. 141 00:08:58,020 --> 00:09:05,100 And now if I run my project as you can see it actually the outputs are this value here. 142 00:09:05,170 --> 00:09:10,130 OK this is the Fahrenheit value that is converted to Celsius. 143 00:09:10,260 --> 00:09:13,010 And this is our text that we used here. 144 00:09:13,170 --> 00:09:14,080 OK. 145 00:09:14,520 --> 00:09:21,170 So this is for actually converting Farenheit values to Celsius. 146 00:09:21,230 --> 00:09:21,640 OK. 147 00:09:21,780 --> 00:09:27,020 And now I want to show you how you can convert a Celsius value into farenheit. 148 00:09:27,030 --> 00:09:31,790 OK so first let me actually comment out these lines of code here. 149 00:09:31,800 --> 00:09:35,420 I don't want to execute these lines of code here. 150 00:09:35,430 --> 00:09:36,050 OK. 151 00:09:36,570 --> 00:09:45,420 So here I just need to actually create some space here and then I need to actually declare our Celsius 152 00:09:45,420 --> 00:09:46,400 variable here. 153 00:09:46,460 --> 00:09:46,970 OK. 154 00:09:47,070 --> 00:09:51,630 I want to convert our Celsius value into Farenheit.