WEBVTT 00:00.730 --> 00:01.240 Hi everyone. 00:01.240 --> 00:02.530 Welcome back to this tutorial. 00:02.530 --> 00:07.720 In this tutorial, we'll explore some of the additional methods that Localdate supports. 00:07.720 --> 00:12.490 Before I get into that, I would like to explain one more scenario which I missed to explain in the 00:12.490 --> 00:13.660 previous tutorial. 00:14.020 --> 00:19.060 Now I want to attract the years by one. 00:19.240 --> 00:19.860 How do we do it? 00:19.870 --> 00:25.480 Normally we can use the minus years, but there is another approach which we can do if we want to subtract 00:25.480 --> 00:28.420 the years localdate dot minus years. 00:28.420 --> 00:33.460 If you provide the minus years value as one, it is going to subtract the year by one. 00:33.460 --> 00:39.730 But if you take a look at it, there is a there is another version of minus that is available here. 00:39.910 --> 00:44.920 We take a look at it minus long, the amount to subtract and then the temporal unit. 00:44.920 --> 00:45.970 Let's explore that. 00:45.970 --> 00:49.930 So in here, what we have to do is I want to subtract the year by one. 00:49.930 --> 00:52.870 And what is other attribute that it accepts? 00:52.870 --> 00:54.580 It accepts a temporal unit. 00:54.610 --> 00:58.930 The temporal unit is an interface that is part of the Java dot time package. 00:58.930 --> 00:59.980 And then. 01:02.270 --> 01:06.830 There is something called Chrono Unit which actually implements a temporal unit. 01:08.160 --> 01:11.850 The Chrono Unit is an enum that implements a temporal unit. 01:11.940 --> 01:15.520 Let's see, what are the different attributes that it supports? 01:15.520 --> 01:19.520 If we take a look at it, it supports minutes, years, seconds, months and all those things. 01:19.530 --> 01:23.190 So our use case is we want to subtract the year by one, right? 01:23.190 --> 01:27.420 So in that case, we will pass this and let's give a comment. 01:28.660 --> 01:30.370 You know, unit minus. 01:34.290 --> 01:34.620 Okay. 01:34.830 --> 01:36.240 Let's go ahead and run this one. 01:38.420 --> 01:41.660 If we take a look at the Chrono unit, minus two is 2017. 01:41.660 --> 01:44.750 So we subtracted the year by one using this. 01:44.780 --> 01:48.560 Again, this is one another approach of subtracting the year. 01:48.590 --> 01:52.970 All these methods are really handy and each and every method, what are we covered? 01:52.970 --> 01:57.410 There is an alternative for each and every approach, but ultimately it is going to give you the same 01:57.410 --> 01:57.860 result. 01:58.070 --> 02:02.540 It's your comfort to choose what are options that you feel comfortable with. 02:02.720 --> 02:06.860 Now let's explore some of the additional support methods. 02:10.370 --> 02:10.940 Additional. 02:13.030 --> 02:13.540 A port. 02:15.290 --> 02:18.470 Let's say you want to check whether this year is a leap year or not. 02:20.050 --> 02:24.310 As a handy method available for that one to local date dot is leap year. 02:24.640 --> 02:30.580 This will tell you is 2017 not sorry, 2018 is a leap year or not. 02:32.940 --> 02:36.150 Here and 2018 is not a leap year. 02:36.150 --> 02:38.130 It's going to give you the result as false. 02:39.670 --> 02:40.000 Right. 02:40.000 --> 02:42.310 Let's see which year is leap year. 02:42.340 --> 02:43.640 2020 is a leap year. 02:43.660 --> 02:47.950 What I'm going to do, I'm going to do local date dot of. 02:48.970 --> 02:50.680 I'm going to create a date. 02:51.070 --> 03:01.600 Local date dot off and I'm going to pass the year as 2020 and the day as zero one. 03:02.520 --> 03:06.510 If you run this, this is going to give me the result as true here. 03:07.480 --> 03:11.020 And then I want to perform what is leap year, right? 03:11.020 --> 03:15.100 If you do not do that, it is not going to check whether it is a leap year or not. 03:16.520 --> 03:17.390 Run this. 03:18.390 --> 03:19.180 Take a look at the result. 03:19.200 --> 03:20.120 It is true. 03:20.130 --> 03:22.680 Previously the result came as false. 03:23.010 --> 03:26.940 Let's explore some more additional different methods. 03:28.600 --> 03:32.590 Let's say you want to check whether the two dates are equal or not. 03:32.630 --> 03:39.670 So here we have local date, which is a current date, and then the local date one, which is the date 03:39.670 --> 03:42.320 which is next to this day, which is 17. 03:42.340 --> 03:45.880 So the current date is actually 16. 03:47.030 --> 03:48.770 July 2018. 03:49.610 --> 03:51.980 Okay, now let's compare this. 03:53.480 --> 03:56.720 When I explore there is a method called is equal. 03:57.990 --> 03:58.520 Zequel. 03:58.520 --> 04:00.190 And then what is the input? 04:00.200 --> 04:03.560 It accepts a chronological date, which is nothing but the local date. 04:04.340 --> 04:05.690 The local date one. 04:06.790 --> 04:08.290 So local date. 04:08.320 --> 04:09.970 Let's put this comment here. 04:10.390 --> 04:14.140 Local date is 16th July. 04:15.680 --> 04:19.360 2018 and a local date one. 04:20.530 --> 04:22.210 This is 17th July. 04:27.720 --> 04:29.850 Chocolate one on 17th July. 04:32.610 --> 04:33.420 2018. 04:33.630 --> 04:35.010 If you run this. 04:35.860 --> 04:39.540 Put some comments here so that it will be easy to read from the console. 04:41.390 --> 04:46.190 Run this it's going to return false because is these dates are not equal. 04:46.340 --> 04:49.100 Local date represents 16th July local date. 04:49.130 --> 04:51.110 One represents 17th July. 04:51.380 --> 04:56.420 Now we will explore the another method which is is before is a local date. 04:56.420 --> 05:01.370 One before local date is local date before local date one. 05:01.370 --> 05:06.080 Yes, because local date is 16th of July and local date one is 17th of July. 05:06.290 --> 05:09.860 And now this is going to return the value as. 05:11.810 --> 05:14.390 If you take a look at the result, the result came as true. 05:14.420 --> 05:17.300 Now there is something called ease after. 05:19.580 --> 05:22.000 Now I'm going to change this instance a little bit. 05:22.010 --> 05:23.510 I'm going to have local date. 05:23.510 --> 05:27.320 One is before local date is after, right. 05:27.320 --> 05:27.800 Is after. 05:27.800 --> 05:30.500 The method that we're exploring is after local date one. 05:30.500 --> 05:35.180 So 17th, 17th of July is local date one, which is after the 16th of July. 05:35.180 --> 05:37.670 It is going to give us the result as. 05:40.280 --> 05:41.930 It gave you the result as true. 05:41.950 --> 05:46.010 These are the handy methods which you can use in order to compare two dates. 05:46.030 --> 05:50.770 There are a lot of different advanced methods which I'll be covering in the future tutorials, but for 05:50.770 --> 05:53.350 now this is one simple options. 05:53.380 --> 05:57.040 These are the options that we have in order to compare the dates. 05:57.040 --> 05:58.330 And these are intuitive. 05:58.360 --> 06:02.230 If you take a look at the method name, just by looking at the method name, you can say what is that 06:02.230 --> 06:05.080 functionality that it is going to perform. 06:05.530 --> 06:11.800 And now I'm going to give you some examples of not unsupported scenarios. 06:11.800 --> 06:13.240 Let's go ahead and explore that. 06:13.450 --> 06:16.060 I'm going to give something like unsupported. 06:18.060 --> 06:21.230 So here, this is completely local data, right? 06:21.240 --> 06:24.090 We are talking about date functionalities. 06:24.480 --> 06:28.710 Let's say you want to try to subtract a time from a date. 06:28.740 --> 06:29.640 What would happen? 06:29.910 --> 06:30.900 Let's explore that. 06:31.230 --> 06:37.590 I'm going to use this example here and then put it here in here what I'm going to do in the place of 06:37.590 --> 06:39.930 this, I'm going to give the value as. 06:41.030 --> 06:41.840 Minutes. 06:42.500 --> 06:44.630 Local date doesn't have a minutes at all. 06:44.630 --> 06:46.190 If you try to perform this. 06:46.220 --> 06:47.090 What would happen? 06:47.390 --> 06:49.670 Run this and check if you run this. 06:49.670 --> 06:52.160 Basically, this is going to give you something like. 06:52.190 --> 06:58.220 Unsupported temporal type exception unsupported unit minutes because you are working with date here, 06:58.220 --> 07:01.550 you cannot try to perform a date functionality. 07:01.580 --> 07:04.970 Time functionality on a date object. 07:05.120 --> 07:08.300 So this is something which you have to keep in your mind. 07:08.330 --> 07:10.310 There is something called is supported. 07:10.310 --> 07:14.840 That is something which you can use in order to check whether this particular operation is supported 07:14.840 --> 07:15.410 or not. 07:15.950 --> 07:19.760 I'm going to show you that is supported. 07:20.620 --> 07:25.690 What this is going to do is local date Dot is supported. 07:25.690 --> 07:32.830 So this is a method and then you can pass the unit, the Chrono unit dot units. 07:33.730 --> 07:39.070 Now, in our use case, this is going to print false because minutes is not supported. 07:39.610 --> 07:40.930 Go ahead and run this and check. 07:42.470 --> 07:45.450 Could he supported value came as false. 07:45.470 --> 07:49.580 If you give years, let's see what it is going to print. 07:52.020 --> 07:53.610 He supported us through so. 07:54.520 --> 08:01.240 Using this, you can find out whether can you perform that kind of operation on this object or not. 08:01.730 --> 08:05.080 So these are the different additional support methods that we have as part of local. 08:05.680 --> 08:09.340 You can actually use in your use cases. 08:09.700 --> 08:11.890 With this, we came to the end of this tutorial. 08:11.920 --> 08:13.000 Thank you for watching.