Why Amazon Corretto Is the Free, Multi‑Platform JDK You Need – Install on Mac & Docker

Amazon AWS has released a free, long‑term‑support (LTS) distribution of OpenJDK called Corretto 8, with additional support for Corretto 11.

Corretto is a production‑ready, multi‑platform JDK that receives performance enhancements and security fixes, and Amazon guarantees free security updates for Corretto 8 until June 2023 and for Corretto 11 until August 2024.

It runs on Amazon Linux 2, Windows, macOS and Docker, and is used internally at Amazon for high‑performance, large‑scale services.

Key advantages:

Amazon long‑term support

Production‑ready

Multi‑platform: Linux, Windows, macOS, Docker

Completely free

Source code is available on GitHub at https://github.com/corretto and documentation at https://docs.aws.amazon.com.

Installing Corretto 8 on macOS

Download the installer from the official site.

Run the .pkg file; the JDK is installed under /Library/Java/JavaVirtualMachines.

Verify the installation with /usr/libexec/java_home -verbose.

Set JAVA_HOME to

/Library/Java/JavaVirtualMachines/amazon-corretto-8.jdk/Contents/Home

.

Running Corretto 8 in Docker

Build an image:

Docker build -t amazon-corretto-jdk-8 github.com/corretto/corretto-8-docker

Run the container: Docker run -it amazon-corretto-jdk-8 To create a HelloWorld app using Corretto as the base image, use the following Dockerfile:

FROM amazon-corretto-8
RUN echo $'\
public class Hello { \
    public static void main(String[] args) { \
        System.out.println("Welcome to Amazon Corretto 8!"); \
    } \
}' > Hello.java
RUN javac Hello.java
CMD ["java", "Hello"]

Build and run the image:

Docker build -t hello-app .
Docker run hello-app

Both steps complete successfully.

Edited by 程永顺