1 00:00:00,210 --> 00:00:00,780 Hi. 2 00:00:00,800 --> 00:00:01,990 It is this theater. 3 00:00:02,190 --> 00:00:04,310 I want to talk about a string format. 4 00:00:04,350 --> 00:00:05,090 OK. 5 00:00:05,310 --> 00:00:07,890 So first we need to create a Java project. 6 00:00:07,890 --> 00:00:12,520 So just click on this file new and then click on Java project. 7 00:00:12,540 --> 00:00:13,300 OK. 8 00:00:13,650 --> 00:00:18,300 And for the project name just type in here a thrain format. 9 00:00:18,660 --> 00:00:19,340 OK. 10 00:00:19,680 --> 00:00:23,810 And then click on finish and we need a main class for our project. 11 00:00:23,820 --> 00:00:30,760 So just click on the RC folder and then click on File New and then click on class. 12 00:00:30,810 --> 00:00:38,160 So for the class name just type in here Main and then click for the package name. 13 00:00:38,160 --> 00:00:44,530 Just type in here com that your name dot product name OK. 14 00:00:44,790 --> 00:00:47,390 A strange format. 15 00:00:47,930 --> 00:00:48,560 OK. 16 00:00:48,720 --> 00:00:51,910 And for the modifiers choose public. 17 00:00:52,230 --> 00:00:53,430 And for the. 18 00:00:53,520 --> 00:00:58,350 And here make sure that we've checked the search box here that says public static void main method. 19 00:00:58,350 --> 00:00:58,880 OK. 20 00:00:59,010 --> 00:01:00,640 And then click Finish. 21 00:01:00,810 --> 00:01:03,550 So as you can see here our main class is now created. 22 00:01:03,600 --> 00:01:08,770 And then I double click on this main that job I have here in order to make this editor area wider. 23 00:01:09,210 --> 00:01:13,760 So now I want to talk about a string format in Java. 24 00:01:13,790 --> 00:01:18,860 OK so what is string formats. 25 00:01:19,590 --> 00:01:28,090 First of all let me point out that sometimes we need to compose strings from valuables like integers. 26 00:01:28,110 --> 00:01:28,720 OK. 27 00:01:28,920 --> 00:01:33,950 And other text string that format is ideal here. 28 00:01:34,020 --> 00:01:38,750 It provides a format language to which we add value of else. 29 00:01:38,940 --> 00:01:45,140 OK so now I'll show you more examples in order to make this concept more meaningful for you to insert 30 00:01:45,150 --> 00:01:49,140 numbers we can use that letter to the format. 31 00:01:49,170 --> 00:01:58,320 OK we use ordinals after the initial per cent symbol starting at 1 and increasing. 32 00:01:58,500 --> 00:02:01,500 This indicates which argument to insert. 33 00:02:01,560 --> 00:02:02,180 OK. 34 00:02:02,320 --> 00:02:05,280 So for the integers we use the format. 35 00:02:05,290 --> 00:02:08,080 OK so now let me just type in here. 36 00:02:08,200 --> 00:02:15,760 Strange that format and as you can see here we need to pass values to this method. 37 00:02:15,790 --> 00:02:18,450 Ok this method accepts arguments. 38 00:02:18,490 --> 00:02:27,810 Ok the first argument is a strain that describes the desired formatting of the output from then on these 39 00:02:27,900 --> 00:02:36,600 arguments can have a multiple number of arguments of any type at runtime these arguments will be converted 40 00:02:36,870 --> 00:02:42,790 to strange and will be printed according to the formatting instructions. 41 00:02:42,830 --> 00:02:47,960 OK so now I want to show you the most basic rule that string formatting follows. 42 00:02:48,060 --> 00:02:48,940 OK. 43 00:02:49,230 --> 00:02:54,030 So as you can see here this is the most basic rule that string formatting follows. 44 00:02:54,040 --> 00:02:58,340 Ok so first of all we need to put the percent sign. 45 00:02:58,430 --> 00:03:06,750 OK so the person sign is a special character denoting that a formatting instruction follows. 46 00:03:06,750 --> 00:03:16,500 So let me repeat again this person sign here is a special character denoting that of formatting an instruction 47 00:03:16,620 --> 00:03:17,350 follows. 48 00:03:17,430 --> 00:03:29,100 And the second one is argument index OK argument index as against Sahir argument index explicitly denoted 49 00:03:29,580 --> 00:03:33,010 the index of the arguments to be formatted. 50 00:03:33,030 --> 00:03:41,910 OK if it is not present arguments will be formatted in the same order as they appear in the arguments 51 00:03:41,910 --> 00:03:49,260 list this argument index explicitly denoted the index of the arguments to be formatted. 52 00:03:49,270 --> 00:03:57,660 OK if it is not present arguments will be formatted in the same order as they appear in the arguments 53 00:03:57,660 --> 00:04:00,730 list the next one is flat. 54 00:04:00,840 --> 00:04:01,140 OK. 55 00:04:01,140 --> 00:04:06,400 As you can see here flag is a special formatting instruction for example. 56 00:04:06,450 --> 00:04:15,990 Plus flag specifies that a numeric value should always be formatted with a sign and the zero flag specifies 57 00:04:16,200 --> 00:04:22,360 that 0 is the Padden character and the next one is Viets as you can see here. 58 00:04:22,490 --> 00:04:23,560 OK. 59 00:04:23,580 --> 00:04:29,240 With the denotes the minimum number of output characters for that object. 60 00:04:29,370 --> 00:04:38,320 OK so now let me repeat again with the nodes the minimum number of output characters for that object. 61 00:04:38,700 --> 00:04:39,270 OK. 62 00:04:39,270 --> 00:04:42,650 And the next one is Dadds precision. 63 00:04:42,690 --> 00:04:47,550 This denotes the precision of floating point numbers in the outputs. 64 00:04:47,640 --> 00:04:54,180 That is basically the number of decimal digits you wish to print on the output but it can be used for 65 00:04:54,240 --> 00:04:57,920 other types to truncate the output with. 66 00:04:58,130 --> 00:04:58,860 OK. 67 00:04:58,890 --> 00:04:59,800 And the next one. 68 00:05:00,030 --> 00:05:09,150 Type R-Ga. type B 8 percent are the only mandatory formatting arguments type simply denotes the type 69 00:05:09,150 --> 00:05:13,650 of the object that will be formatted in the outputs for integers. 70 00:05:13,650 --> 00:05:22,410 That is the four strings that is best for floating point numbers that is F for integers with hex format 71 00:05:22,620 --> 00:05:24,080 that is x. 72 00:05:24,100 --> 00:05:27,760 Ok so now I want to show you some real examples. 73 00:05:27,960 --> 00:05:29,850 And then and then this can actually make sense for you. 74 00:05:29,850 --> 00:05:30,300 OK. 75 00:05:30,330 --> 00:05:32,160 So now I want to actually create. 76 00:05:32,160 --> 00:05:35,610 So now let me actually comment out this line of code here. 77 00:05:35,820 --> 00:05:38,450 In order to let the compiler to run my code. 78 00:05:38,550 --> 00:05:41,850 And now I want to actually create a string object. 79 00:05:41,970 --> 00:05:42,790 So there. 80 00:05:42,920 --> 00:05:49,430 So first I need to refer to the string class as strange and that the name of my object is a string. 81 00:05:49,440 --> 00:05:50,680 Result. 82 00:05:51,290 --> 00:05:52,370 OK. 83 00:05:53,220 --> 00:05:58,880 And then I put in an assignment operator here and then I refer to the name of the string class. 84 00:05:58,900 --> 00:06:02,150 A strange dot format. 85 00:06:02,790 --> 00:06:07,690 And as you can see here here we need to actually specify the formatting instructions. 86 00:06:07,830 --> 00:06:11,810 And our second argument is going to actually accept our real values. 87 00:06:12,030 --> 00:06:15,740 Ok so here we need to actually specify the formatting instruction. 88 00:06:15,890 --> 00:06:23,550 So I need to put in two double quotes here and then inside the double quotes I can actually specify 89 00:06:23,550 --> 00:06:26,620 the formatting instruction for my string of object. 90 00:06:26,650 --> 00:06:27,030 OK. 91 00:06:27,060 --> 00:06:31,930 So here I want to actually typing integer percent. 92 00:06:31,930 --> 00:06:35,050 D city is the type of our string formatting. 93 00:06:35,190 --> 00:06:39,950 So person sign and the type are the only mandatory formatting arguments. 94 00:06:39,960 --> 00:06:40,410 OK. 95 00:06:40,440 --> 00:06:47,860 And then I want to actually specify a new line character by using dislike for the slash character plus. 96 00:06:47,930 --> 00:06:48,390 And. 97 00:06:48,540 --> 00:06:49,160 OK. 98 00:06:49,350 --> 00:06:56,670 And then I press on tab key on my keyboard and then I can actually passing my values for example number 99 00:06:56,680 --> 00:06:57,460 58. 100 00:06:57,510 --> 00:06:58,080 OK. 101 00:06:58,260 --> 00:07:01,550 And that I need to put in a semi-colon at the end of my statement. 102 00:07:01,620 --> 00:07:02,260 OK. 103 00:07:02,490 --> 00:07:07,500 And now I want to output this string result object to the console. 104 00:07:07,560 --> 00:07:15,780 So I just need to type in here or system that out does princeling and then inside the prentices I just 105 00:07:15,780 --> 00:07:20,200 need to refer to the name of the to the name of the string with that object. 106 00:07:20,460 --> 00:07:23,910 And then I need to put in a semicolon at the end of my statement. 107 00:07:24,030 --> 00:07:29,780 And now if I go on my project as you can see it's going out with this value to the console OK. 108 00:07:29,790 --> 00:07:37,590 So as you can see here first of all I specified the formatting instructions for my value as you can 109 00:07:37,590 --> 00:07:38,100 see here. 110 00:07:38,130 --> 00:07:42,600 Integer call 1 percent type. 111 00:07:42,930 --> 00:07:45,030 And this is the newline character OK. 112 00:07:45,270 --> 00:07:51,050 So for example if you want to actually output another value to the console Let's see what happens. 113 00:07:51,060 --> 00:07:58,320 System that out that princeling and then inside the prentices are just put two double codes that in 114 00:07:58,320 --> 00:08:02,890 some text here and then I need to put in a semicolon at the end of my statement. 115 00:08:03,190 --> 00:08:07,350 And if I had on my project now as you can see it's going to actually put this text here. 116 00:08:07,370 --> 00:08:09,300 OK below this value. 117 00:08:09,360 --> 00:08:15,870 OK but if we don't actually put this new line together here and if I don't my project now as you can 118 00:08:15,870 --> 00:08:18,380 see it's going to put this value here. 119 00:08:18,390 --> 00:08:18,920 OK. 120 00:08:19,050 --> 00:08:24,280 So this near-light you can actually put a space between these two values. 121 00:08:24,350 --> 00:08:30,900 Ok so now let me show you another example about floating point numbers. 122 00:08:30,900 --> 00:08:38,880 So first let me actually comment out these lines of code here and now again I want to create a string 123 00:08:38,940 --> 00:08:39,730 object. 124 00:08:39,780 --> 00:08:48,340 So first I need to refer to the String class as strange and the name of the object is. 125 00:08:48,340 --> 00:08:49,670 Strange. 126 00:08:50,460 --> 00:08:51,050 OK. 127 00:08:51,150 --> 00:08:57,590 And then we need to put in an assignment operator here and then we need to refer to this in class strength 128 00:08:57,590 --> 00:08:59,620 that format. 129 00:09:00,090 --> 00:09:06,240 And here first of all we need to specify formatting instructions OK for our object. 130 00:09:06,270 --> 00:09:09,940 We need to put it into double quotes and then inside it calls. 131 00:09:10,020 --> 00:09:12,710 Now I can specify the formatting instructions. 132 00:09:12,720 --> 00:09:13,330 OK. 133 00:09:13,560 --> 00:09:20,740 So a floating or floating point number with Freet decimal digits. 134 00:09:20,850 --> 00:09:28,680 And then I just put in a colon here colon here and then I put a space here and then I can specify the 135 00:09:28,680 --> 00:09:30,370 formatting instruction. 136 00:09:30,570 --> 00:09:36,270 And then I can specify the formatting Kear percent point free 137 00:09:39,530 --> 00:09:47,390 back for Slash and so as you can see here first I put the percent character here as you can see here. 138 00:09:47,670 --> 00:09:50,130 First Vinita putting this person's character. 139 00:09:50,390 --> 00:09:59,450 And then we can specify the argument index flag or the data precision and the type but the person's 140 00:09:59,660 --> 00:10:04,470 character and that height is mandatory for our formatting arguments. 141 00:10:04,490 --> 00:10:04,940 OK.