WEBVTT 00:00.700 --> 00:01.270 Hi everyone. 00:01.270 --> 00:02.620 Welcome back to this tutorial. 00:02.620 --> 00:09.400 In this tutorial we will code and learn about the match all match and non match stream function. 00:10.530 --> 00:11.640 This any match? 00:11.670 --> 00:13.260 All match and none match. 00:13.290 --> 00:18.480 Dixon a predicate as an input and returns the boolean as an output. 00:18.510 --> 00:25.170 We can use all of these functions in scenarios where you want to find whether a particular element is 00:25.170 --> 00:29.550 present in the stream or not present in the stream or not. 00:31.880 --> 00:37.220 Any match returns true if any one of the element matches the predicate. 00:37.250 --> 00:39.800 Otherwise it's going to return false. 00:40.660 --> 00:41.740 All match returns. 00:41.740 --> 00:46.030 True if the all the elements in the stream matches the predicate. 00:46.060 --> 00:48.910 Otherwise it is going to return false. 00:49.030 --> 00:50.050 The none match. 00:50.080 --> 00:53.170 It is just opposite to all match returns. 00:53.170 --> 00:57.460 True, if none of the elements in the stream matches the predicate. 00:57.490 --> 01:00.490 Otherwise this is going to return false. 01:00.520 --> 01:02.080 Let's go ahead and code this one. 01:04.220 --> 01:06.500 I have the IntelliJ idea open in here. 01:06.500 --> 01:09.980 What I'm going to do, I'm going to create a class called. 01:11.760 --> 01:12.510 Dreams. 01:13.710 --> 01:15.240 Match example. 01:17.060 --> 01:20.990 And then I'm going to make this class executable by adding public static void main. 01:22.380 --> 01:23.280 The next purpose. 01:24.940 --> 01:26.560 And to put this in presentation mode. 01:27.980 --> 01:34.820 Let's explore the all match method first, meaning all match function, which is part of the streams 01:34.850 --> 01:35.570 API. 01:36.770 --> 01:39.500 The name of the method is going to be public static. 01:41.020 --> 01:41.890 Boolean. 01:43.230 --> 01:46.170 All match is a name which I'm going to give for this method. 01:47.230 --> 01:47.920 The first purpose. 01:47.920 --> 01:48.420 I'm gonna. 01:49.900 --> 01:53.080 All the student database and get all the students. 01:53.820 --> 01:55.830 And call the stream method. 01:57.000 --> 02:00.920 So we are going to explore the all match function. 02:00.930 --> 02:02.760 Just part of the streams API, right? 02:03.740 --> 02:06.260 If all match, we take a look at it all. 02:06.260 --> 02:08.900 Match takes in an input as an predicate. 02:09.670 --> 02:10.200 Okay. 02:10.210 --> 02:18.520 The predicate which I'm going to give is going to be student dot three, student dot get GPA. 02:20.830 --> 02:24.520 Is greater than or equal to 3.9. 02:26.010 --> 02:26.520 Right. 02:26.520 --> 02:35.550 So what this is going to do, this is going to check whether all the students in this stream has a GPA 02:35.580 --> 02:37.260 greater than or equal to 3.9. 02:37.260 --> 02:38.670 Let's go ahead and check this. 02:38.970 --> 02:45.480 If you take a look at it, only there are two students who has a GPA, sorry, three students who has 02:45.480 --> 02:47.850 a GPA greater than or equal to 3.9. 02:47.880 --> 02:51.780 What I'm going to do is I'm going to go back and then. 02:52.800 --> 02:53.730 All this method. 02:54.720 --> 02:55.800 And check the result. 02:56.620 --> 03:03.060 So I'm going to put into sort going to be result of all match. 03:05.260 --> 03:06.340 Check the result. 03:06.370 --> 03:07.780 Call the all match. 03:08.770 --> 03:11.020 And run this example. 03:12.330 --> 03:19.570 This is going to return false because in the students object in the get all students method, it returns 03:19.680 --> 03:21.030 returns a list of students. 03:21.060 --> 03:25.640 Not all the students has the GPA as 3.9. 03:25.650 --> 03:27.000 What is the least GPA? 03:27.030 --> 03:29.220 The least GPA is 3.5. 03:29.250 --> 03:34.140 What I'm going to do, I'm going to change this condition to 3.5. 03:34.350 --> 03:39.090 Now, all the students in the stream matches this condition. 03:39.450 --> 03:42.720 So it is going to return true as a result. 03:42.720 --> 03:45.480 As you see, the result is returned as true. 03:45.780 --> 03:47.910 So this is all about all match. 03:47.910 --> 03:50.280 Let's go ahead and explore the next. 03:51.730 --> 03:53.530 Function, which is any match. 03:54.310 --> 03:55.780 Want to just copy this? 03:56.980 --> 04:00.100 And change a method name to any match. 04:00.190 --> 04:03.010 And in here we have to use any match. 04:03.100 --> 04:08.050 Here, what I'm going to do, I'm going to give the value as 4.0. 04:08.710 --> 04:13.810 Basically, what this is going to do, this is going to check whether any of the students in this list 04:13.840 --> 04:16.900 has the GPA as 4.0. 04:18.240 --> 04:21.660 So we have only one students who has the GPA as 4.0. 04:22.770 --> 04:30.870 This is going to return false because it matches the required criteria that any one of the student matches 04:30.870 --> 04:31.920 the condition. 04:33.130 --> 04:35.240 Basically matches a predicate runner. 04:35.290 --> 04:39.040 This is also going to return the result as true. 04:39.970 --> 04:41.710 Now I'm going to make it fail. 04:41.710 --> 04:46.210 I'm going to give the value as 4.1 as 4.0 is a. 04:49.140 --> 04:50.370 GPA's student can have. 04:50.370 --> 04:50.730 I'm going to. 04:50.820 --> 04:58.050 I'm changing the condition to 4.04.1 so that it can fail and return the value as false. 04:58.080 --> 04:58.620 There you go. 04:58.650 --> 05:00.660 It returned the value as false. 05:00.930 --> 05:03.030 I'm going to change it back to its original value. 05:03.330 --> 05:06.030 Now let's go ahead and explore the Non-match. 05:08.570 --> 05:09.740 The non-match. 05:14.590 --> 05:14.950 Here. 05:14.950 --> 05:16.300 I'm going to use Non-match. 05:16.330 --> 05:20.290 Non-match is just the opposite of all match. 05:21.080 --> 05:25.910 None of the if none of the students matches this criteria, this is going to return true. 05:26.570 --> 05:33.770 In order to make that happen, what I'm going to give, I'm going to give an invalid GPA which is not 05:33.770 --> 05:37.940 present in any which which the value is not present for any of the students. 05:37.940 --> 05:42.080 So none of the students has the GPA or the GPA has 4.1. 05:42.080 --> 05:44.120 Now this is going to return. 05:44.150 --> 05:44.840 True. 05:46.670 --> 05:48.200 I change this one to Non-match? 05:49.370 --> 05:51.170 Make the call to Non-match. 05:51.200 --> 05:55.220 Now, if I run it, this is going to return true, because. 05:57.110 --> 05:59.870 None of the students has a GPA has 4.1. 05:59.900 --> 06:00.480 There you go. 06:00.500 --> 06:07.580 If I change this one, this value to 4.0 because we have one student who has a GPA as 4.0. 06:07.700 --> 06:12.620 So this condition is going to fail and then return the result as false. 06:13.130 --> 06:13.690 Here we go. 06:13.700 --> 06:17.240 The the result is returned as false. 06:17.600 --> 06:21.470 So this is all about all match any match and none match. 06:21.470 --> 06:23.780 But this we came to the end of this tutorial. 06:23.810 --> 06:25.010 Thank you for watching.