Java 9 Features with Examples

Starting Java 8, we can also add default methods to the interfaces which I am going to explain in this blog also. We can define any number of default methods in a functional interface but there should be one and Why cybersecurity is the ultimate recession-proof industry only one abstract method. Java 8 also provides us with an annotation called @FunctionalInterface. If we mark our interface with this annotation, then we can only define one abstract method in that interface.

  • It’s an Independent module and does NOT dependent on any other modules.
  • But Starting Java 9, we can define those resources anywhere in our code before the try block, and we can directly use those objects or resources inside the try.
  • There’s the special field of Android development, where the Java version is basically stuck at Java 7, with a specific set of Java 8 features available.
  • I particularly like their coverage of modules and JShell, one of the things you will love.

$MAJOR is the version number that is incremented for a major release, for example JDK 9, which contains significant new features as specified by the Java SE platform specification. A DRAFT: Java Style Guidelines major release contains new features and changes to existing features, which are planned and announced well in advance. Java Platform, Standard Edition 9 is a major feature release.

Java 9 Features with Examples

In other words, we can say that we don’t need to close resources explicitly, try-with-resource close that automatically by using AutoClosable interface. Java introduced try-with-resource feature in Java 7 that helps to close resource automatically after being used. Java 10 has been released, for a complete overview of Java 10 release, go through Java 10 Features.

In this article, I am going to share some of the best courses to learn JDK 9 features. Java 9 also offers phase two of Oracle’s smart compilation deployment. This feature involves improving thes javactool’s stability and portability so it can be used in the JVM by default. The tool will also be generalized so it can be used for large projects outside of the JDK.

Java 9 is introducing a lot of improvements to process API for controlling and managing OS related process. The modular system is one of the main and defining features of the Java 9.Jigsaw is responsible for bringing modularity to the Java platform. One of the main reason to bring modularity to the Java provides modular JVM which can help us to run JVM on different devices with less memory. In this articles, we will be covering Java 9 new features at a high level. We will explore these features along with details as what are the improvements happening to the existing features.

CompletableFuture API Improvements

Why not use that information to create a minimal runtime environment, containing just those modules necessary to run your application? Instead of shipping your app with a fully loaded JDK installation, you can create a minimal runtime image optimized for your application. One more new package javax.imageio.plugins.tiff is added to provide classes that simplify the optional manipulation of TIFF metadata. In earlier versions, it was complex to manage and control operating system processes by using Java programming. Now, new classes and interfaces are added to perform this task. JLink is Java’s new command line tool through which you can create you own customized JRE by linking sets of modules to create a run-time image.

java 9 features

An application or library can provide implementation of this service to log messages to logging framework. It uses default implementation, if no implementation is provided. In Java 9, Stream API has improved and new methods are added to the Stream interface. TakeWhile, dropWhile and ofNullable, and one overloaded iterate method are added to perform operations on stream elements.

Describe the Java platform module system introduced in Java 9?

If you like these best Java 9 and Module courses, then please share them with your friends and colleagues. If you have any questions or doubts, then please drop a note. If you have any free Java online courses you want to share with us, feel free to drop a note or email me. This is a great course to learn the major features of Java 9, like Modules, JShell, and Process API changes in a quick time. I particularly like their coverage of modules and JShell, one of the things you will love. Java 9 is packed with new features, and in this article, I am going to share some of the best Java 9 courses you can take to learn new features of Java 9 quickly.

This module system makes it easier to understand module dependencies and hierarchies than ever before. Two interesting features that we assumed will make a part of the upcoming Java release – but now we know they will be skipped this time are. The official HTTP 2.0 RFC was approved not too long ago, building on top of Google’s SPDY algorithm. SPDY has already shown great speed improvements over HTTP 1.1 ranging between 11.81% to 47.7% and its implementation already exists in most modern browsers. Once you complete this, you fully understand terms like encapsulation and explicit module dependencies and will be ready for modular development with Java 9.

Earlier before java 10, there used to be released once every three years or two year. It gives us a Shell type environment of our own where we can type in our java snippets. Java 9 offers many cool features, with many additions to existing features. The list is pretty much similar to the previous list and you can refer to it if you need a quick overview. This is another great tutorial to learn Project Jigsaw or the JDK 9 Module System. You will learn how to explore Java with JShell and understand the various JShell commands.

It’s not too late to learn more about the features and enhancements in JDK 9.

Consider rewriting these types of applications as Java Web Start or self-contained applications. Enables the client to request OCSP stapling from a TLS server. The client checks stapled responses from servers that support the feature. When using the -source or -target options, the compiled program might accidentally use APIs that are not supported on the given target platform.

Java 9 also removes the feature of Concurrent Mark Sweep garbage collector. The idea is to race up the growth of other garbage collectors in the HotSpot virtual machine. Java 9 deprecates a few features which are no longer in trend. The most important among those is Applet API. This feature has gone out of style as security-conscious developers have been removing support for Java browser plug-ins. Developers have now resorted to alternatives like Java Web Start, for launching apps from a browser. This software or hardware is developed for general use in a variety of information management applications.

  • A host of configurations are supported; as a result, scalability, security, and application performance should be improved.
  • For example, if you are just starting with programming and choose Java 9 to start with this is the course you should join.
  • A module is defined in a module declaration file, which is a file named ‘module-info.java’ in the project’s root folder.
  • In Java 9, as long as the inferred type is denotable, we can use the diamond operator when we create an anonymous inner class.
  • One of the quiet characteristics comprises Unicode eleven and maintenance as well as the performance of a switch appearance.

The course is created by Tim Buchalaka, instructor of The Complete Java MasterClass, one of the best courses to learn Java in-depth. Books are also good but you learn quickly using online courses than books because they focus on the most important parts and don’t provide in-depth coverage as the book does. Since it’s always good to keep yourself up-to-date, its time to spend some time to learn those new features and make use of them to write better code in Java.

But if you have a maven project then you can grab these dependencies from the maven repository, and you can still use them. Using Streams, we can process the data in a declarative manner very similar to that of SQL. It makes very easy for us to process the data or objects inside a collection. These streams are not the same as java.io.streams, which meant for reading/writing files. Also, we can pass lambda expressions as parameters to other methods which is very powerful as well.

Modular system

Java 9 introduced a new concept and component called ‘Module’ which adds a higher level of aggregation over packages. A module consists of a group of related packages and resources which are reusable. In addition, the module specifies the list of https://topbitcoinnews.org/ external modules that it is dependent on, and also list of its packages that it makes available to other modules. Since Java 9 is a major release after Java 8, questions on the features added in Java 9 are frequently asked in Java interviews.

To use the latest features of the Java platform on the newer versions, the library developers will have to release a more current version of their library. Shortly, there will be various versions of the library being supported by the developers, which can be a nightmare. To surmount this shortcoming, these Java 9 features of multi-release JAR files empower developers to design JAR files with various versions of class files for several Java versions. Next, let us talk about the concurrency updates of Java 9 with CompletableFuture and java.util.concurrent.Flow. Flow is considered as the Java implementation of the Reactive Streams API. Reactive Streams resolve the pain of back-pressure.