Java 11 Download: How to Install and Use the Latest Version of Java
Java is one of the most popular and widely used programming languages in the world. It is used for developing applications for desktop, web, mobile, and embedded devices. Java is also the foundation of many enterprise systems, such as banking, e-commerce, and cloud computing.
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Java is constantly evolving and improving, with new versions released every six months. The latest version of Java is Java 11, which was released in September 2018. Java 11 is a long-term support (LTS) release, which means that it will receive updates and security patches until at least September 2026.
If you are a developer, a student, or a hobbyist who wants to use Java for your projects, you need to download and install Java 11 on your computer. In this article, we will show you how to do that, as well as how to use some of the new features and tools that come with Java 11.
What is Java 11 and why do you need it?
Java 11 is the eleventh major release of the Java platform. It is also the first LTS release since Java 8, which was released in March 2014. LTS releases are more stable and reliable than non-LTS releases, which are only supported for six months. LTS releases are also more compatible with older versions of Java, which makes them easier to migrate to.
Java 11 introduces many new features and improvements that make Java more modern, efficient, and secure. Some of these features are:
Java 11 features and benefits
Lambda expressions: Lambda expressions are anonymous functions that can be used as arguments or return values of other methods. They allow you to write concise and expressive code that avoids boilerplate and verbosity.
Local variable type inference: Local variable type inference allows you to declare local variables without specifying their types. The compiler will infer the type based on the initialization expression. This reduces the amount of code you have to write and makes it more readable.
HTTP/2 client: HTTP/2 client is a new API that supports HTTP/2 protocol, which is faster and more secure than HTTP/1.1. It also supports WebSocket protocol, which enables bidirectional communication between client and server.
Nest-based access control: Nest-based access control is a new feature that allows classes that are logically part of the same "nest" (such as inner classes) to access each other's private members without requiring synthetic methods or reflection.
Dynamic class-file constants: Dynamic class-file constants are a new kind of constant pool entry that can be dynamically computed at run time. They enable more efficient and expressive code generation for languages that target the Java virtual machine (JVM).
Epsilon garbage collector: Epsilon garbage collector is a new experimental garbage collector that does not reclaim any memory. It can be used for testing, benchmarking, or short-lived applications that do not need memory management.
JShell: JShell is an interactive tool that allows you to execute Java code snippets without compiling or creating a class file. It is a great way to learn Java, experiment with new features, or debug your code.
These are just some of the new features and benefits of Java 11. You can find more details and examples on the official Java website or the OpenJDK website.
Java 11 compatibility and requirements
Java 11 is compatible with most of the previous versions of Java, except for some deprecated or removed features. For example, Java 11 no longer supports Java Web Start, Java Applets, or the Java EE modules. You can check the full list of compatibility issues on the Oracle website.
Java 11 requires a minimum of 256 MB of memory and 1 GB of disk space. It also requires a 64-bit operating system, such as Windows, Linux, or macOS. You can check the full list of system requirements on the Oracle website.
How to download Java 11 from Oracle
Oracle is the official provider of the Java Development Kit (JDK), which is a software package that contains everything you need to develop and run Java applications. The JDK includes the Java Runtime Environment (JRE), which is a software package that contains the JVM and the core libraries. The JDK also includes the Java compiler, debugger, and other tools.
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To download Java 11 from Oracle, you need to follow these steps:
Step 1: Choose the right JDK package for your operating system
Go to the Oracle website and choose the JDK package that matches your operating system. For example, if you are using Windows 10, you can choose the Windows x64 Installer. You can also choose the ZIP or TAR.GZ file if you prefer a manual installation.
Step 2: Download the JDK file from Oracle website
Click on the JDK package that you have chosen and accept the license agreement. Then, click on the download link and save the file to your computer. The file size may vary depending on your operating system, but it should be around 200 MB.
Step 3: Install the JDK on your computer
If you have downloaded the installer file, double-click on it and follow the instructions on the screen. You can choose the default installation options or customize them according to your preferences. The installer will create a folder called "jdk-11" in your program files directory and add it to your PATH environment variable.
If you have downloaded the ZIP or TAR.GZ file, extract it to a location of your choice. You will need to manually set up the JAVA_HOME and PATH environment variables to point to the extracted folder. We will show you how to do that in a later section.
How to download Java 11 from OpenJDK
OpenJDK is an open-source implementation of the Java platform. It is maintained by a community of developers and organizations, including Oracle, IBM, Red Hat, and others. OpenJDK is compatible with Oracle JDK, but it may have some differences in terms of performance, security, or functionality.
To download Java 11 from OpenJDK, you need to follow these steps:
Step 1: Choose the right OpenJDK distribution for your needs
There are many OpenJDK distributions available online, each with its own features and advantages. Some of the most popular ones are:
AdoptOpenJDK: AdoptOpenJDK is a community-led project that provides pre-built binaries of OpenJDK for various platforms and configurations. It also offers LTS releases and security updates.
Azul Zulu: Azul Zulu is a commercial distribution of OpenJDK that is certified by Oracle and compliant with Java SE standards. It also offers LTS releases and security updates.
Amazon Corretto: Amazon Corretto is a distribution of OpenJDK that is supported by Amazon Web Services (AWS). It also offers LTS releases and security updates.
Eclipse Temurin: Eclipse Temurin is a distribution of OpenJDK that is supported by the Eclipse Foundation. It also offers LTS releases and security updates.
You can choose any OpenJDK distribution that suits your needs and preferences. For this article, we will use AdoptOpenJDK as an example.
Step 2: Download the OpenJDK file from the chosen website
Go to the AdoptOpenJDK website and choose the OpenJDK file that matches your operating system and configuration. For example, if you are using Windows 10, you can choose the Windows x64 Installer with HotSpot JVM. You can also choose the ZIP or TAR.GZ file if you prefer a manual installation.
Step 3: Install the OpenJDK on your computer
If you have downloaded the installer file, double-click on it and follow the instructions on the screen. You can choose the default installation options or customize them according to your preferences. The installer will create a folder called "jdk-11" in your program files directory and add it to your PATH environment variable.
If you have downloaded the ZIP or TAR.GZ file, extract it to a location of your choice. You will need to manually set up the JAVA_HOME and PATH environment variables to point to the extracted folder. We will show you how to do that in a later section.
How to use Java 11 on your projects
Once you have installed Java 11 on your computer, you can start using it for your projects. You can use any IDE or text editor that supports Java 11, such as Eclipse, IntelliJ IDEA, Visual Studio Code, or Notepad++. You can also use the command-line tools that come with the JDK, such as javac, java, jar, and jshell.
To use Java 11 on your projects, you need to follow these steps:
How to set up the JAVA_HOME and PATH environment variables
The JAVA_HOME and PATH environment variables are used by the operating system and other applications to locate the Java installation directory and the executable files. If you have installed Java 11 using the installer file, these variables should be automatically set up for you. However, if you have installed Java 11 manually or if you want to change them, you need to do it yourself.
To set up the JAVA_HOME and PATH environment variables on Windows, you need to do the following:
Right-click on the Start menu and select System.
Click on Advanced system settings on the left panel.
Click on Environment Variables at the bottom of the System Properties window.
Under System variables, click on New.
Type JAVA_HOME as the variable name and the path to your Java installation directory as the variable value. For example, C:\Program Files\jdk-11.
Click OK.
Under System variables, select Path and click on Edit.
Click on New and type %JAVA_HOME%\bin as the new entry.
Click OK.
Click OK again to close the Environment Variables window.
Click OK again to close the System Properties window.
To set up the JAVA_HOME and PATH environment variables on Linux or macOS, you need to do the following:
Open a terminal window and type sudo nano /etc/profile to edit the profile file.
Type export JAVA_HOME=/path/to/your/java/installation/directory as a new line at the end of the file. For example, export JAVA_HOME=/usr/lib/jvm/jdk-11.
Type export PATH=$JAVA_HOME/bin:$PATH as another new line at the end of the file.
Press Ctrl+O and then Enter to save the file.
Press Ctrl+X to exit the editor.
Type source /etc/profile to reload the profile file.
How to compile and run Java programs with Java 11
To compile and run Java programs with Java 11, you can use any IDE or text editor that supports Java 11, or you can use the command-line tools that come with the JDK. For this article, we will use the command-line tools as an example.
To compile and run Java programs with Java 11, you need to follow these steps:
Create a Java source file with the .java extension. For example, HelloWorld.java.
Open a command prompt or a terminal window and navigate to the directory where your Java source file is located.
Type javac HelloWorld.java to compile your Java source file into a Java class file with the .class extension. For example, HelloWorld.class.
Type java HelloWorld to run your Java class file and see the output on the screen.
You can also use the java command with the --source option to compile and run a Java source file in one step. For example, java --source 11 HelloWorld.java.
How to use new Java features and tools in Java 11
To use new Java features and tools in Java 11, you need to learn how they work and what they can do for you. You can find many tutorials and examples online that explain and demonstrate the new features and tools in Java 11. For example, you can check out the following resources:
: The official documentation of Java 11 that covers all the new features, enhancements, and changes in Java 11.
: A collection of tutorials that teach you how to use various aspects of Java 11, such as lambda expressions, local variable type inference, HTTP/2 client, nest-based access control, dynamic class-file constants, epsilon garbage collector, and jshell.
: A collection of examples that show you how to use various features and tools in Java 11, such as lambda expressions, local variable type inference, HTTP/2 client, nest-based access control, dynamic class-file constants, epsilon garbage collector, and jshell.
Conclusion
Java 11 is the latest version of Java that offers many new features and improvements that make Java more modern, efficient, and secure. It is also a long-term support release that will receive updates and security patches until at least September 2026.
To download and install Java 11 on your computer, you can choose between Oracle JDK or OpenJDK. Both are compatible with each other, but they may have some differences in terms of performance, security, or functionality. You can also choose between installer files or ZIP or TAR.GZ files depending on your preferences.
To use Java 11 on your projects, you need to set up the JAVA_HOME and PATH environment variables and use any IDE or text editor that supports Java 11. You can also use the command-line tools that come with the JDK, such as javac, java, jar, and jshell. You can also learn how to use the new features and tools in Java 11 by following online tutorials and examples.
FAQs
Here are some frequently asked questions about Java 11:
What is the difference between JDK and JRE?
JDK stands for Java Development Kit, which is a software package that contains everything you need to develop and run Java applications. JRE stands for Java Runtime Environment, which is a software package that contains only the JVM and the core libraries. You need JDK if you want to create or modify Java programs. You need JRE if you only want to run existing Java programs.
What is the difference between HotSpot and OpenJ9?
HotSpot and OpenJ9 are two different implementations of the JVM. HotSpot is the default JVM that comes with Oracle JDK and OpenJDK. OpenJ9 is an alternative JVM that comes with some OpenJDK distributions, such as Eclipse Temurin. Both JVMs have their own advantages and disadvantages in terms of performance, memory usage, startup time, scalability, etc. You can choose the JVM that best suits your needs and preferences.
What is the difference between Oracle JDK and OpenJDK?
Oracle JDK and OpenJDK are two different distributions of the JDK. Oracle JDK is provided by Oracle Corporation and is subject to a commercial license for production use. OpenJDK is provided by a community of developers and organizations and is subject to an open-source license for any use. Both JDKs are compatible with each other, but they may have some differences in terms of performance, security, or functionality.
How do I update Java 11?
To update Java 11, you need to download and install the latest version of Java 11 from the website of your chosen JDK provider. For example, if you are using Oracle JDK, you can go to the Oracle website and download the latest Java 11 update. If you are using OpenJDK, you can go to the website of your chosen OpenJDK distribution and download the latest Java 11 update. You can also use the automatic update feature that comes with some JDKs, such as Oracle JDK or Azul Zulu.
How do I uninstall Java 11?
To uninstall Java 11, you need to remove the JDK installation directory and the JAVA_HOME and PATH environment variables from your computer. The exact steps may vary depending on your operating system and your JDK provider. For example, if you are using Windows and Oracle JDK, you can follow these steps:
Go to Control Panel and select Programs and Features.
Find Java 11 in the list of programs and click on Uninstall.
Follow the instructions on the screen to complete the uninstallation process.
Right-click on the Start menu and select System.
Click on Advanced system settings on the left panel.
Click on Environment Variables at the bottom of the System Properties window.
Under System variables, select JAVA_HOME and click on Delete.
Under System variables, select Path and click on Edit.
Find %JAVA_HOME%\bin in the list of entries and click on Delete.
Click OK.
Click OK again to close the Environment Variables window.
Click OK again to close the System Properties window.
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