WEBVTT 00:00.080 --> 00:00.560 Hi everyone. 00:00.560 --> 00:01.850 Welcome back to this tutorial. 00:01.850 --> 00:08.330 In this tutorial, we will explore the options of modifying the local date that we created and explore 00:08.330 --> 00:11.570 some of the additional methods that local date supports. 00:11.570 --> 00:14.690 Let's start with modifying the local date instance. 00:15.320 --> 00:17.150 I'll give a quick comment here. 00:17.450 --> 00:20.810 Modifying local date. 00:22.840 --> 00:23.590 No. 00:24.510 --> 00:29.550 We have the current date as let's run this example and check what is the current date. 00:29.670 --> 00:31.730 The current date is 16. 00:31.740 --> 00:34.800 I want to increment the date by two days. 00:34.800 --> 00:35.790 How do I do it? 00:36.710 --> 00:43.070 The local date instance supports a lot of handy methods that can that we can use in order to achieve 00:43.070 --> 00:43.910 our goal. 00:44.060 --> 00:51.350 So as soon as I type in plus it gives me all these options you can do plus days, plus years plus weeks 00:51.350 --> 00:52.310 plus months. 00:52.790 --> 00:54.830 I'm going to explore a couple of options here. 00:54.830 --> 00:57.590 I would highly recommend you guys to explore all the options. 00:57.620 --> 01:00.830 Our use cases, we want to increment the days by two, right? 01:00.830 --> 01:07.910 So in that case we can do plus days and then you have to pass the integer. 01:07.910 --> 01:14.330 So if you take a look at the input to this method, it is just the long it was not integer, it is long. 01:14.330 --> 01:17.120 You just have to give how many days you want to increment. 01:17.150 --> 01:19.880 So here I want to increment the days by two. 01:19.910 --> 01:22.190 So that's the reason why I'm passing the days as two. 01:22.580 --> 01:24.350 Let's check this result. 01:27.690 --> 01:32.370 So the current date is 16 after we run this example. 01:33.710 --> 01:35.300 Let's take a look at the current date. 01:36.830 --> 01:41.690 Though the current date is going to be the local date instance date is going to be 18. 01:41.690 --> 01:47.360 And one more thing, if you notice, it doesn't change the actual instance that got created initially 01:47.360 --> 01:54.620 because as I mentioned in the presentation, all the local date instances that we create are immutable. 01:54.620 --> 02:00.110 So if we go and take a look at the prejudice method, basically this is going to return a new local 02:00.110 --> 02:04.100 date instance using the local date dot off of Epoch Day. 02:04.160 --> 02:09.340 Basically this doesn't disturb the local date instance that we created at all. 02:09.350 --> 02:13.220 So this is one of the important thing to keep in your mind. 02:13.250 --> 02:18.800 This helps us build the programs in functional approach and want to increase the month. 02:18.800 --> 02:19.820 How can we do it? 02:20.120 --> 02:22.220 There is a handy method called. 02:23.640 --> 02:28.140 Last months and I'm going to increase the month by two months. 02:28.140 --> 02:30.540 That's the reason why I'm passing the value as two. 02:30.870 --> 02:36.270 And if I run it, you'll be able to see the value as nine here in the place of seven. 02:36.300 --> 02:36.780 There you go. 02:36.780 --> 02:39.000 It printed the value as nine. 02:39.000 --> 02:44.940 And if you take a look at the date, date is again 16 because as I mentioned, every time it is going 02:44.940 --> 02:51.600 to create a new date instance, that's the reason why this local date is still pointing to the 16th, 02:51.600 --> 02:53.220 which is a current date. 02:53.520 --> 02:55.740 I want to decrease the date by two days. 02:55.740 --> 02:56.700 How do I do it? 02:57.000 --> 02:59.220 So there is a handy method called. 03:00.060 --> 03:01.170 Minus. 03:02.580 --> 03:03.360 In minors. 03:03.360 --> 03:06.880 If you want to decrease the dates by two, I'll pass two. 03:06.900 --> 03:12.180 And this is going to decrease the date and it is going to print the date as 14. 03:15.360 --> 03:15.780 There you go. 03:15.780 --> 03:19.710 It printed the date is 14 and the current date is 16. 03:20.370 --> 03:22.770 Now, these are the handy methods. 03:22.770 --> 03:25.410 You can modify the date, right? 03:25.410 --> 03:27.870 There are some more options, like with. 03:28.320 --> 03:29.610 Let's explore that as part of this. 03:29.610 --> 03:32.040 Now the local date. 03:34.150 --> 03:36.150 That we type in width. 03:36.180 --> 03:37.770 Width has two different. 03:37.800 --> 03:38.300 Not two. 03:38.340 --> 03:40.380 Three different variations. 03:40.410 --> 03:42.060 Let's say you want to change a year. 03:42.390 --> 03:44.940 You can change it by passing the width year. 03:44.940 --> 03:47.400 I'm going to change the year as 2019. 03:47.430 --> 03:49.170 Let's go ahead and check the result. 03:49.200 --> 03:51.240 Again, this is going to be immutable. 03:51.240 --> 03:54.120 It does not going to change the current state of local date. 03:54.180 --> 04:00.000 It is going to give you a new date and it doesn't disturb the current local date instance. 04:00.000 --> 04:05.250 If you take a look at it, the year got changed to 2019 from 2018. 04:05.280 --> 04:08.760 Now let's take a look at some more options with. 04:10.350 --> 04:13.170 The word has many different versions now. 04:13.200 --> 04:17.400 We are going to explore the one with the temporal field. 04:18.450 --> 04:20.550 The temporal field is something. 04:21.940 --> 04:24.880 Similar to the Chrono Field we are going to pass. 04:25.330 --> 04:27.820 Let's say you want to change the year. 04:28.090 --> 04:29.320 There are a lot of different options. 04:29.350 --> 04:32.530 If you take a look at it, it supports a lot of different options. 04:32.530 --> 04:38.200 But here, in order to keep the example simple, what I'm going to do, I'm going to do the year. 04:38.440 --> 04:40.420 You want to change the hour of the day? 04:40.420 --> 04:42.130 You can pass the hour of the day. 04:42.160 --> 04:44.230 You want to change the month of the year. 04:44.230 --> 04:47.890 You can pass by calling this enum constant. 04:47.890 --> 04:50.230 So here I'm going to change the year, right? 04:50.590 --> 04:53.080 I want to change the year to 2020. 04:54.250 --> 04:57.790 Soviet Chrono Field. 05:00.930 --> 05:05.010 Donna Field I'm going to put it down so that it will be visible throughout the presentation. 05:05.040 --> 05:09.930 Now, if I run this example, the date is going to be 2020. 05:09.960 --> 05:12.900 As you see here, the date got changed to 2020. 05:12.990 --> 05:17.070 And let's explore the other option, which is the temporal adjusters. 05:18.070 --> 05:18.970 Don't check that. 05:20.980 --> 05:22.330 I'll copy the same thing. 05:22.570 --> 05:24.820 So we are going to explore the width method only. 05:25.150 --> 05:27.280 The width method has. 05:31.640 --> 05:34.610 Some reason it is acting weird. 05:34.790 --> 05:38.690 Okay, now we are going to use the temporal adjusters. 05:38.720 --> 05:45.470 Temporal adjusters are something which is part of the Java runtime package, and it supports a lot of 05:45.470 --> 05:46.850 handy functionalities for you. 05:46.850 --> 05:49.820 Let's say you want to get the first day of the next month. 05:49.820 --> 05:52.400 You want to set that date to be the first day of next month. 05:52.430 --> 05:55.250 You can call that one and it has a lot of additional methods. 05:55.250 --> 05:59.750 I would highly recommend you guys to go through it and post any kind of questions in the Q&A. 05:59.750 --> 06:02.930 I'll be able to respond to you as fast as I can. 06:03.140 --> 06:10.040 So I want the first day of next month to be set against this local date instance in that case. 06:11.840 --> 06:12.590 What to name this one. 06:12.590 --> 06:15.800 As with temporal adjusters, we run this example. 06:15.800 --> 06:21.200 It is going to give me the date as the first month, meaning first day of the next month. 06:21.200 --> 06:24.620 The next month is zero eight and the first day is zero one. 06:24.770 --> 06:30.830 If you compare this with the earlier versions of date and Time libraries that are part of Java, the 06:30.830 --> 06:33.920 new additions are really handy and intuitive. 06:33.950 --> 06:39.680 This means the local date to be the first choice to use when you are building some functionalities that 06:39.680 --> 06:41.300 are related to date. 06:41.330 --> 06:45.950 Let's go ahead and explore some more additional features that are part of the local date in the upcoming 06:45.980 --> 06:46.880 tutorials. 06:46.930 --> 06:49.020 With this, we came to the end of this tutorial. 06:49.040 --> 06:50.180 Thank you for watching.