# Foojay Podcast #55: Embedded Java, Part 2

> In this episode #55, we look into the history of the Java Micro Edition and how things evolved.

- URL: https://foojay.io/today/foojay-podcast-55/
- Published: 2024-07-01
- Authors: Frank Delporte, Pavel Petroshenko
- Categories: Cloud, CRaC, DevOps, Embedded, Java, Java Core, Pi4J, Podcast, Raspberry Pi, Spring


As a backend developer, you may not realize that Java was initially born on embedded devices like set-top boxes and gateways. We discussed this topic for the first time almost three years ago in [Foojay Podcast #2 with James Gosling, Johan Vos, Erik Costlow, and Frank Delporte](https://foojay.io/today/foojay-podcast-2/).

In this episode #55, we look into the history of the Java Micro Edition and how things evolved. Nowadays, with processors becoming increasingly powerful, we can run the exact same Java runtime on any Linux system, from the biggest cloud servers to the smallest Raspberry Pi Zero.

Let's find out what can be done with Java in the embedded world.

## Video

{{< youtube FoTyfWogspI >}}

## Podcast Apps

You can listen and subscribe to the Foojay Podcast on:

* [Spotify](https://open.spotify.com/show/6CpTfgn9LirzJGAtc4ICdQ)
* [Apple Podcasts](https://podcasts.apple.com/be/podcast/foojay-io-the-friends-of-openjdk/id1652281304)
* And most others...

## Guests

* Robert von Burg
  * <https://www.linkedin.com/in/eitchme/>
  * <https://mstdn.gsi.li/@eitch>
* DaShaun Carter
  * <https://www.linkedin.com/in/dashaun/>
  * <https://twitter.com/dashaun>
  * <https://vmst.io/@dashaun>
* Pavel Petroshenko
  * <https://www.linkedin.com/in/pavel-petroshenko-5220092/>

## Content

00:00 Introduction of the topic and guests  

04:53 Java is running on more devices than we can imagine  

06:18 History of Java ME

<https://www.oracle.com/java/technologies/javameoverview.html>  
<https://en.wikipedia.org/wiki/SavaJe>  

Jasper S20: <https://vimeo.com/198239375>  

Jasper S20: [https://www.phonescoop.com/articles/article.php?a=77\&p=1498](https://www.phonescoop.com/articles/article.php?a=77&p=1498)

15:55 Java on modern embedded devices  

22:25 Are modern embedded devices still "embedded"?  

25:24 Current modern Java is perfect for embedded uses

<https://www.pi4j.com>

30:10 How Java moved to ARM on Mac and cloud  

34:48 Green Computing = Reducing costs

Presentation by Miro Wengner: <https://www.youtube.com/watch?v=zP4xeeY3HIA>  
<https://thenewstack.io/which-programming-languages-use-the-least-electricity/>

37:47 Recent Java evolutions impacting embedded use  

41:51 Is there a need for real-time Java?

LED strips with Java: <https://www.pi4j.com/examples/jbang/pixelblaze_output_expander/>

49:44 Spring IO presentation by DaShaun

<https://2024.springio.net/sessions/spring-boot-on-the-edge>

51:38 Java on RISC-V

<https://riscv.org/blog/2024/04/java-21-and-22-now-available-on-risc-v-a-collaboration-between-rise-and-eclipse-adoptium>

53:27 More details about the product Robert develops with Java

<https://www.pi4j.com/featured-projects/soft-real-time-plc-written-in-strolch/>  
<https://strolch.li/>

59:09 Network alternatives on embedded (e.g. LoRa)  

1:03:42 What will the future bring to embedded Java?

Pi4J Spring Boot: <https://www.youtube.com/watch?v=I62IviQLNts>  
<https://openjdk.org/projects/leyden/>  
<https://openjdk.org/projects/crac/>

1:09:07 Conclusion