tmptrs
July 25, 2024, 10:54am
1
Hello everyone, I am looking for more information on the installed version of Java.https://www.arduino.cc/en/software/ReleaseNotes )https://www.java.com/releases/ )
Best Regards, Tom
J-M-L
July 25, 2024, 11:44am
2
java (JDK) in itself is not installed by the IDE (IIRC it comes with a JRE)
kenb4
July 25, 2024, 11:56am
3
Let's see; on Windows
Take the current download link for the Windows ZIP file: https://downloads.arduino.cc/arduino-1.8.19-windows.zip
Change that to 1.8.9 and download it: https://downloads.arduino.cc/arduino-1.8.9-windows.zip
Open that ZIP file, and drill into the java/lib directory: C:\Users\whoami\Downloads\arduino-1.8.9-windows.zip\arduino-1.8.9\java\lib
Extract rt.jar (the Java RunTime); one way is by dragging it to a directory in the left column, like Documents
Switch to that directory, and rename the file to rt.zip (a JAR is a specialized ZIP)
Open that file, and drill into the META-INF directory
Extract MANIFEST.MF to the same directory
Open that file with Notepad (Just Once)
Check the Implementation-Version
Manifest-Version: 1.0
Implementation-Vendor: Oracle Corporation
Implementation-Title: Java Runtime Environment
Implementation-Version: 1.8.0_191
Searching for java 1.8.0_191 yields Java™ SE Development Kit 8, Update 191 Release Notes (oracle.com)
J-M-L
July 25, 2024, 12:13pm
4
Note that if you move to 2.x, there is no need for Java anymore.
tmptrs
July 25, 2024, 12:19pm
5
just what I needed as I only have limited access to the installation. Thank you very much, kenb4!
tmptrs
July 25, 2024, 12:20pm
6
correct, Arduino switched to AdoptOpen JDK from 2.0 and on
Juraj
July 25, 2024, 12:27pm
7
IDE 2 is written in typescript and javascript
system
January 21, 2025, 12:28pm
8
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