WEBVTT 00:00.050 --> 00:00.620 Hi everyone. 00:00.620 --> 00:01.340 Welcome back. 00:01.340 --> 00:06.980 In this lecture I'm going to give you all an introduction to modern Java, which includes an overview 00:06.980 --> 00:10.940 of all the new features in Java and the release cycle, and more. 00:10.970 --> 00:14.420 A quick call out here is that this is going to be a theory lecture. 00:14.420 --> 00:20.450 So if you already know about modern Java and the latest release model, then you are welcome to skip 00:20.450 --> 00:22.610 this lecture and move on to the next lecture. 00:22.610 --> 00:27.020 First and foremost, I would like to talk about what does Java primarily mean? 00:27.020 --> 00:33.590 Any time someone refers to Java, they are referring to Java as a programming language or Java as a 00:33.590 --> 00:40.310 platform, which is the JDK, which includes the gray and the virtual machine, which primarily executes 00:40.310 --> 00:41.510 the bytecode for us. 00:41.540 --> 00:47.510 The term modern Java is coined from the fact that it continues to evolve and incorporate a lot of new 00:47.510 --> 00:53.210 features in the recent years, I would like to highlight some of the major shifts that happened with 00:53.210 --> 00:54.410 Java in this slide. 00:54.410 --> 01:00.500 Some of the notable features are the introduction of functional programming in Java eight, which includes 01:00.500 --> 01:07.270 lambdas, streams compatible features, and many other features that are close to functional programming. 01:07.270 --> 01:13.030 The next one is the release of the Java modules, which is Java nine, which is also called the Java 01:13.030 --> 01:14.560 Platform Module System. 01:14.560 --> 01:20.440 In this release, the Java runtime libraries that is part of Java nine are modularized into separate 01:20.440 --> 01:21.070 modules. 01:21.070 --> 01:27.310 Prior to this, until Java nine, it used to be just the RT dot jar file, which is a runtime dot jar 01:27.310 --> 01:33.490 file, which is kind of a monolith which holds everything in a single Jar file, which is basically 01:33.490 --> 01:35.440 a big platform change. 01:35.470 --> 01:40.000 Number three is the six month release cycle from Java ten onwards. 01:40.000 --> 01:45.070 This means new features in Java are released every six months. 01:45.070 --> 01:52.390 Java as a language is constantly evolving and bringing in new features to continuously excite the developers. 01:52.390 --> 01:57.250 So in this slide, I would like to highlight and call out some of the features that we will be exploring 01:57.250 --> 01:58.060 in this course. 01:58.060 --> 02:03.520 The first part of the course, we will look at all the Java eight features in action, which includes 02:03.550 --> 02:08.680 lambdas, streams, optionals, new DateTime APIs, and more. 02:08.710 --> 02:13.300 And in the second part of the course, we will look at the features that got introduced from Java nine 02:13.300 --> 02:13.900 and beyond. 02:13.930 --> 02:16.660 Number one is the Java Platform module system. 02:16.660 --> 02:24.010 And then we have local variable type inference record types, enhanced switch text blocks, seal classes, 02:24.010 --> 02:25.120 pattern matching. 02:25.120 --> 02:29.530 And there is a feature that got introduced called virtual threads, which is a big change when it comes 02:29.530 --> 02:30.550 to multithreading. 02:30.580 --> 02:36.370 So starting from Java nine and beyond, it was not like a major release as like Java eight, but they 02:36.370 --> 02:40.450 continuously released features in each and every new Java release. 02:40.450 --> 02:46.060 But if you add them up and look at it now, there are a lot of new features that are released to improve 02:46.060 --> 02:48.610 the overall developer experience. 02:48.640 --> 02:52.990 One thing I would like to call out before we move on, visual threads is a vast topic, and I won't 02:52.990 --> 02:54.790 be covering virtual threads in this course. 02:54.790 --> 02:59.800 I have a course released on this topic if you'd like to explore and learn about virtual threads. 02:59.830 --> 03:01.270 Please do check my profile. 03:01.870 --> 03:07.500 So the goal of this course is to provide you all a pragmatic experience on using these features in your 03:07.500 --> 03:08.490 day to day coding? 03:08.490 --> 03:13.260 So if you are a Java developer who would like to learn about all these features and the new features 03:13.260 --> 03:16.920 that is going to be released in the future, then this is the right course for you. 03:16.920 --> 03:21.060 I would like to talk a little bit on the release model before I wrap up this lecture. 03:21.090 --> 03:26.280 Java is an open source language and it's managed under the open JDK project. 03:26.310 --> 03:31.110 Java seven was the first version that was released under the Open source license. 03:31.140 --> 03:35.520 Open JDK is maintained by Oracle, Red hat and the community. 03:35.550 --> 03:37.890 There are different open JDK providers. 03:37.890 --> 03:41.940 It might be confusing on which open JDK provider you need to choose from. 03:41.940 --> 03:44.850 Some of the examples that I'm going to show you is Oracle. 03:44.850 --> 03:47.430 We have Eclipse or Optimum called tamarin. 03:47.430 --> 03:49.590 Amazon has its own thing. 03:49.920 --> 03:51.270 Zul has its own thing. 03:51.300 --> 03:54.240 IBM, Microsoft, RedHat and SAP. 03:54.330 --> 03:57.090 They all have their own version of open JDK. 03:57.090 --> 04:01.230 And all of these vendors have this concept of long term support releases. 04:01.230 --> 04:06.870 The reason being, the long term support releases have a wide and extended support time frame compared 04:06.870 --> 04:07.680 to the other ones. 04:07.710 --> 04:13.830 Applications primarily run on these long term release or long term support releases, even though new 04:13.830 --> 04:15.780 version is released every six months. 04:15.810 --> 04:20.670 What I have seen from an organization perspective, they normally move from one Java version to other 04:20.670 --> 04:21.690 Java version. 04:21.720 --> 04:27.900 If there is a new long term support version is released, let's quickly take a look at the release model 04:27.900 --> 04:30.060 and where to find more information from it. 04:30.060 --> 04:32.550 So I'm going to use ChatGPT for this purpose. 04:32.550 --> 04:37.050 For those of you who are hearing about ChatGPT for the very first time, you can think of this like 04:37.080 --> 04:39.750 a super smart robot that can talk to you. 04:39.780 --> 04:43.170 It understands the questions and it can answer you those questions. 04:43.170 --> 04:50.340 It is pretty much trained on vast amounts of data, of books, internet data, websites, and it understands 04:50.340 --> 04:52.740 your question and gives you the response accordingly. 04:52.740 --> 04:57.090 So now what I'm going to do, I'm going to ask what are the different Java releases. 04:57.090 --> 05:01.110 This is going to be showing you the information based on what it is trained on. 05:01.140 --> 05:01.350 Okay. 05:01.380 --> 05:04.350 So it is going to give you starting from JDK one. 05:04.350 --> 05:07.520 And then it goes all the way until JDK 21. 05:07.550 --> 05:12.110 I assume there was the latest long term support version at the time of recording this lecture. 05:12.140 --> 05:14.570 So this basically stopped at this point, right. 05:14.600 --> 05:17.270 What I'm going to do I'm going to enable the web search. 05:17.270 --> 05:19.670 And then I'm going to ask the same question. 05:19.670 --> 05:21.800 Let's go to the top and then ask for it. 05:21.830 --> 05:23.900 What are the different Java releases. 05:23.930 --> 05:29.390 Now what this is going to do is this is going to go to the web and search the results and consolidate 05:29.390 --> 05:35.120 the results and provide that information to you in a nice, readable and digestible format. 05:35.150 --> 05:35.420 Okay. 05:35.420 --> 05:36.350 So there you go. 05:36.380 --> 05:37.310 I got the response. 05:37.340 --> 05:42.560 This response is directly coming from Wikipedia because if I go to the bottom, it gives you the source 05:42.560 --> 05:44.330 where it got the information from. 05:44.360 --> 05:48.770 So if you click on the sources you can see where this information is being retrieved from. 05:48.800 --> 05:51.530 So it got this information from all these portals. 05:51.560 --> 05:51.980 Okay. 05:52.010 --> 05:55.730 And this is the long term support releases that I talked about. 05:55.730 --> 06:03.110 So we have Java 17 and Java 21 which is the latest long term release version at the time of recording 06:03.110 --> 06:03.740 this lecture. 06:03.740 --> 06:08.120 So if you want to learn about the history of this one, you can go to this one and then take a look 06:08.150 --> 06:09.950 at the Java version history. 06:09.980 --> 06:13.580 While that is loading, what I'm going to do is I'm going to call out one more thing. 06:13.580 --> 06:15.080 So the modern error. 06:15.080 --> 06:16.730 So this is the scope of this course. 06:16.760 --> 06:19.370 The modern era started from Java eight. 06:19.370 --> 06:23.810 And then it goes all the way until 21 at the time of recording this lecture. 06:23.840 --> 06:24.260 Okay. 06:24.290 --> 06:29.960 So as long as there is a new LTS release is available, I'll be updating this course to reflect the 06:29.960 --> 06:30.320 same. 06:30.350 --> 06:30.680 Okay. 06:30.710 --> 06:33.920 So now if you go and open up this one, if you go to the bottom. 06:33.920 --> 06:40.340 So they talk about I believe the blocks that are highlighted in yellow are the long term support releases. 06:40.340 --> 06:43.670 So you have Java eight to start with and then Java 11. 06:43.670 --> 06:47.000 And if you go a little bit down we have Java 21. 06:47.000 --> 06:51.710 So the LTS release as you can see it is scheduled for September 2025. 06:51.740 --> 06:57.200 So when this is released that's when I'll go ahead and update the course with all the new features. 06:57.230 --> 07:02.210 Okay, I hope you all have a pretty good idea about what is modern Java and the release model that's 07:02.210 --> 07:02.660 tied to it. 07:02.690 --> 07:08.150 In the next lecture, we will go ahead and install the latest long term version of the Java in our machine. 07:08.150 --> 07:09.590 This marks the end of this lecture. 07:09.590 --> 07:10.460 Thank you for watching.