WEBVTT 00:00.290 --> 00:00.860 Hi everyone. 00:00.860 --> 00:02.150 Welcome back to this tutorial. 00:02.150 --> 00:07.130 In this tutorial we will code and explore the numeric stream ranges. 00:07.280 --> 00:10.640 The first one is in stream, which supports two methods. 00:10.640 --> 00:13.850 One is a range and another one is a range closed. 00:13.880 --> 00:15.410 Both takes into input. 00:15.410 --> 00:19.250 One is the starting value of the stream and another one is the ending value of the stream. 00:19.250 --> 00:26.000 The difference is that the range method excludes the last element that is being passed as a second argument 00:26.000 --> 00:34.090 for this method, for this input value one comma 50 it returns an int stream of 49 elements from 1 to 00:34.090 --> 00:34.550 49. 00:34.550 --> 00:39.620 Basically, this will exclude the last element, which is the second argument of this method. 00:39.650 --> 00:46.190 The next one is a range closed method range closed method returns an inter stream of 50 elements. 00:46.190 --> 00:53.240 Basically this is there is no exclusion concept here is going to include the values from 1 to 50. 00:53.840 --> 00:55.280 So similar to the end stream. 00:55.280 --> 01:00.230 The long stream also supports the range and range closed method. 01:00.230 --> 01:05.390 The behavior is the same instead of the stream, it is going to return you the long stream. 01:05.480 --> 01:10.310 So for the double stream it doesn't have both range and range closed. 01:10.310 --> 01:12.290 But there is an alternative approach. 01:12.290 --> 01:14.330 In order to create a double stream. 01:14.330 --> 01:16.760 I'll be showing you that in a moment. 01:16.790 --> 01:19.190 Let's go ahead and code this and explore this. 01:21.620 --> 01:23.000 The numeric stream package. 01:23.000 --> 01:25.700 I'm going to create a class called. 01:26.710 --> 01:27.640 Numeric. 01:28.800 --> 01:29.430 Dream. 01:30.500 --> 01:30.900 Ranges. 01:31.070 --> 01:31.850 Example. 01:33.120 --> 01:33.990 And then. 01:35.010 --> 01:38.130 And add the public static void main method. 01:40.310 --> 01:41.780 This in presentation mode. 01:42.640 --> 01:44.050 So that the code will be clear. 01:44.170 --> 01:52.060 The first step is I'm going to create an inter stream dot range and one comma 50. 01:54.320 --> 01:59.360 So basically, if you take a look at it, this is going to return you an input stream. 01:59.870 --> 02:04.160 So let's give it a name int stream equal to. 02:05.640 --> 02:06.060 Here we go. 02:06.060 --> 02:07.650 We have the stream ready. 02:08.070 --> 02:12.810 Let's check what is the total number of elements it has in stream dot? 02:13.940 --> 02:14.170 Oh. 02:15.420 --> 02:15.870 Ramdas. 02:15.870 --> 02:18.150 It is going to print 49. 02:19.350 --> 02:23.160 Now let's try to do a iteration of it. 02:24.300 --> 02:26.160 Right iteration of. 02:27.500 --> 02:33.740 Each value basically for each takes in a consumer and each value is going to have. 02:36.160 --> 02:36.870 Value. 02:36.880 --> 02:40.180 Plus, I'm going to add a comma here as it will be tough to read. 02:40.660 --> 02:42.040 I'll run this example. 02:42.490 --> 02:43.450 There we go. 02:43.480 --> 02:47.770 We got an exception here because a stream has already been closed. 02:47.800 --> 02:51.580 We all know streams can be iterated only once. 02:51.820 --> 02:53.800 That's the reason why we get this problem. 02:54.070 --> 02:57.340 In that case, I'm going to do it like this. 02:57.730 --> 02:59.770 I'm going to print all the values here. 03:00.250 --> 03:02.350 I'm using this print ln. 03:02.380 --> 03:05.740 I'm going to change this one to print and run this example. 03:06.630 --> 03:07.170 There you go. 03:07.170 --> 03:10.560 It printed the values from 1 to 49. 03:11.530 --> 03:12.030 Right. 03:12.040 --> 03:14.920 Let's go ahead and explore the range closed. 03:14.950 --> 03:16.930 I'm going to copy this and paste it here. 03:17.530 --> 03:20.560 I'm going to be range closed dot for each. 03:20.890 --> 03:22.240 If I do this. 03:23.380 --> 03:26.200 Going to print the values until 40. 03:26.230 --> 03:28.360 I would like to perform the count also here. 03:31.680 --> 03:33.090 This one is going to be. 03:34.040 --> 03:34.490 Found. 03:35.670 --> 03:37.320 Put this inside a suit. 03:39.820 --> 03:43.180 So here we are printing the range closed count. 03:43.210 --> 03:44.530 This is range count. 03:46.590 --> 03:47.730 Range count. 03:49.490 --> 03:51.410 And this one is range. 03:52.770 --> 03:53.280 Closed. 03:55.720 --> 03:56.830 Take a look at the difference. 03:58.670 --> 04:06.650 So the range count printed the value as 49, but the range closed count printed the value as 50 here. 04:08.120 --> 04:12.580 Since we have print it is not printing it in the line. 04:13.340 --> 04:14.450 Add this out. 04:15.360 --> 04:15.780 There you go. 04:16.080 --> 04:20.550 They printed the range closed value as 50 range as 49. 04:20.580 --> 04:22.980 Let's explore this. 04:24.270 --> 04:25.320 But the long stream. 04:26.250 --> 04:27.930 If you are doing a long stream. 04:28.050 --> 04:29.100 Same concept. 04:31.800 --> 04:32.880 Long stream. 04:35.140 --> 04:37.540 And then I'm going to do the same thing here. 04:39.890 --> 04:43.210 So instead of the stream, I'm going to change this one to long string. 04:44.670 --> 04:45.120 Okay. 04:46.060 --> 04:47.100 Then let's print this. 04:51.000 --> 04:51.600 You run it. 04:52.230 --> 04:57.210 So here you have the long stream range count as this that. 04:58.550 --> 04:59.390 Episode here. 04:59.390 --> 05:03.770 So that can be printed in a new line so that it will be easy to read in the console. 05:03.800 --> 05:10.190 So in the console, if you take a look at it, the range closed count is 50 and it printed all the 50 05:10.190 --> 05:10.790 values. 05:10.910 --> 05:16.730 So in the presentation I mentioned, that double stream doesn't have doesn't support the range and range 05:16.730 --> 05:17.030 closed. 05:17.030 --> 05:17.300 Right. 05:17.300 --> 05:18.590 Let's go ahead and explore that. 05:18.830 --> 05:25.340 If you do double stream dot, take a look at it doesn't support the range and range closure, but in 05:25.340 --> 05:28.550 case if you need a double stream, how can we get that? 05:28.670 --> 05:30.470 So the way to get it is. 05:33.470 --> 05:33.980 God. 05:35.490 --> 05:41.910 As there is a method called as long stream and as double stream as double stream is going to give you 05:42.030 --> 05:47.400 all the values converted to double then the for each. 05:47.580 --> 05:48.900 I'm printing this. 05:49.750 --> 05:51.070 There was a sword here. 05:52.800 --> 05:55.770 This, then check the route here. 05:55.770 --> 05:57.840 We take a look at it in the console. 05:57.840 --> 06:01.050 We have 1.02.03.0. 06:01.140 --> 06:07.170 So there is a handy method as double stream, which is part of both in stream and long stream. 06:07.170 --> 06:10.650 Using that, you can create the double stream. 06:11.220 --> 06:16.290 So this is all about range and ranges that you need to know about numeric stream. 06:16.290 --> 06:18.390 With this we came to the end of this tutorial. 06:18.390 --> 06:19.440 Thank you for watching.