How to Install and Use OpenJDK 11 on Red Hat Enterprise Linux
Java 11 Download Red Hat
Java is one of the most popular programming languages in the world, used for developing applications across various domains and platforms. Java 11 is the latest long-term support (LTS) release of Java, which means it will receive updates and security patches until at least September 2026. Java 11 introduces many new features and enhancements that make it more efficient, reliable, and secure.
Red Hat Enterprise Linux (RHEL) is a leading enterprise Linux platform that provides a stable and flexible foundation for running applications in the hybrid cloud. RHEL supports Java 11 and offers several options for downloading and installing it. In this article, we will explore how to download Java 11 for RHEL, and how to use some of its new features.
java 11 download red hat
How to Download Java 11 for Red Hat Enterprise Linux
There are two main options for downloading Java 11 for RHEL: using the Red Hat build of OpenJDK, or using the Oracle JDK. Both options provide a free and open source implementation of the Java Platform, Standard Edition (Java SE), but they have some differences in terms of licensing, support, and updates. Let's look at each option in more detail.
Option 1: Download Red Hat build of OpenJDK
OpenJDK is an open source project that develops and maintains the reference implementation of Java SE. The Red Hat build of OpenJDK is a distribution of OpenJDK that is certified by Red Hat and supported by its ecosystem of partners. The Red Hat build of OpenJDK has several benefits, such as:
It is compatible with RHEL and other Linux environments, as well as Windows.
It includes additional development tools and add-ons, such as Migration Toolkit for Applications, Red Hat Satellite, and Red Hat Insights.
It comes with a subscription that provides access to software updates, technical support, and customer portal.
It can be used for commercial purposes without a license fee.
To download and install the Red Hat build of OpenJDK for RHEL, you can follow these steps:
Go to and choose your preferred version of OpenJDK (8 or 11).
Select your operating system (RHEL) and your architecture (x86_64 or ARM64).
Choose your download format (ZIP, MSI, or TAR.XZ) and click on the download button.
If you are not logged in, you will be prompted to log in or register with your Red Hat account.
Once you have downloaded the file, you can extract it to a directory of your choice.
You can set the JAVA_HOME environment variable to point to the directory where you extracted OpenJDK.
You can also add the bin directory of OpenJDK to your PATH environment variable to run Java commands from any location.
OpenJDK 64-Bit Server VM 18.9 (build 11.0.12+7-LTS, mixed mode, sharing)
To run a Java program on RHEL, you can use the java command with the name of the class or the jar file that contains the main method. For example:
$ java HelloWorld // run a class file Hello, world! $ java -jar hello.jar // run a jar file Hello, world!
In this article, we have learned how to download Java 11 for RHEL, and how to use some of its new features. We have seen that there are two main options for downloading Java 11 for RHEL: using the Red Hat build of OpenJDK, or using the Oracle JDK. Both options have their advantages and disadvantages, and you should choose the one that suits your needs and preferences. We have also seen some examples of new features in Java 11, such as new String methods, new File methods, collection to an array, local variable syntax for lambda parameters, and Unicode 11 support. These features make Java 11 more efficient, reliable, and secure.
java 11 install red hat
java 11 red hat enterprise linux
java 11 red hat developer
java 11 red hat openjdk
java 11 red hat build
java 11 red hat container
java 11 red hat support
java 11 red hat msi
java 11 red hat zip
java 11 red hat tar.xz
java 11 red hat jre
java 11 red hat jdk
java 11 red hat windows
java 11 red hat linux
java 11 red hat openshift
java 11 red hat migration toolkit
java 11 red hat lifecycle policy
java 11 red hat security updates
java 11 red hat performance tuning
java 11 red hat troubleshooting
java 11 red hat documentation
java 11 red hat release notes
java 11 red hat certification
java 11 red hat compatibility
java 11 red hat features
java 11 red hat benefits
java 11 red hat alternatives
java 11 red hat comparison
java 11 red hat review
java 11 red hat tutorial
java 11 red hat guide
java 11 red hat best practices
java 11 red hat tips and tricks
java 11 red hat faq
java 11 red hat forum
java 11 red hat blog
java 11 red hat webinar
java 11 red hat video
java 11 red hat podcast
java 11 red hat ebook
java 11 red hat course
java 11 red hat training
java 11 red hat certification exam
java 11 red hat free trial
java 11 red hat subscription
java 11 red hat pricing
java 11 red hat discount code
java 11 red hat customer service
java 11 red hat feedback survey
Here are some recommendations and tips for using Java 11 on RHEL:
Keep your Java version updated to get the latest security patches and bug fixes.
Use the javac --release option to compile your code for a specific Java version.
Use the jshell tool to experiment with Java code interactively.
Use the jlink tool to create custom runtime images that contain only the modules you need.
Use the jdeps tool to analyze the dependencies of your Java code.
What are the differences between Oracle JDK and OpenJDK?
Oracle JDK and OpenJDK are both distributions of OpenJDK, but they have some differences in terms of licensing, support, and updates. Oracle JDK requires a license fee for commercial use after the end of the free update period, while OpenJDK does not. Oracle JDK provides long-term support only for LTS releases, while OpenJDK provides long-term support for all releases. Oracle JDK includes some proprietary features and tools that are not available in OpenJDK, while OpenJDK includes some additional development tools and add-ons that are not available in Oracle JDK.
How can I migrate from Java 8 to Java 11 on RHEL?
To migrate from Java 8 to Java 11 on RHEL, you should follow these steps:
Download and install Java 11 for RHEL using one of the options described above.
Update your JAVA_HOME and PATH environment variables to point to Java 11.
Test your existing Java applications with Java 11 and fix any compatibility issues.
Use the Migration Toolkit for Applications (MTA) to analyze and migrate your Java applications to Java 11.
Use the jmod tool to create modular versions of your Java applications.
How can I use Java 11 on Red Hat OpenShift?
Red Hat OpenShift is a cloud platform that allows you to deploy and manage containerized applications. To use Java 11 on Red Hat OpenShift, you can use one of the following methods:
Use the Red Hat build of Quarkus, a framework that optimizes Java for containerized environments.
Use the Red Hat build of Spring Boot, a framework that simplifies the development of Java web applications.
Use the Red Hat build of WildFly, an application server that supports Jakarta EE and MicroProfile standards.
Use the Red Hat build of Vert.x, a toolkit that enables reactive programming with Java.
Use the Red Hat build of Thorntail, a framework that creates microservices from Jakarta EE applications.
How can I optimize the performance of Java 11 on RHEL?
To optimize the performance of Java 11 on RHEL, you can use some of these tips:
Tune the garbage collection algorithm and parameters according to your application's memory usage and latency requirements.
Use the -XX:+UseNUMA option to enable NUMA-aware memory allocation and improve cache locality.
Use the -XX:+UnlockExperimentalVMOptions option to enable experimental features that may improve performance.
Use the -XX:+AggressiveOpts option to enable aggressive optimizations that may improve performance.
Use the -Xcomp option to force compilation of all methods at startup and reduce JIT overhead.
Use the -Xbatch option to reduce the compilation thread contention and improve throughput.
Use the -Xprof option to profile your application and identify performance bottlenecks.
How can I get support for Java 11 on RHEL?
To get support for Java 11 on RHEL, you can use some of these resources:
Contact the Red Hat Customer Service team for technical assistance and guidance.
Visit the Red Hat Customer Portal for documentation, knowledge base articles, and solutions.
Join the Red Hat Developer Program for access to tools, tutorials, and forums.
Participate in the OpenJDK community for feedback, bug reports, and patches.
Consult the Oracle Java SE Support Roadmap for information on Oracle JDK support policies and timelines.