Unsupported class file major version 61 Cordova Mac

Question

So im on mac (Big sur), and i wish to build a Cordova app to android. I have java 17 installed, and gradle 7.1.1.

Im able to build the project on another windows computer just fine. (though i cannot rely on that for personal reasons)

But every time i try to build on mac, im confronted with following error:

FAILURE: Build failed with an exception.

* Where:
Settings file '/Users/me/app/cordovaProject/platforms/android/settings.gradle'

* What went wrong:
Could not compile settings file '/Users/me/app/cordovaProject/platforms/android/settings.gradle'.
> startup failed:
  General error during conversion: Unsupported class file major version 61

(There is more to the error but its long. Will provide if needed.)

I think class version 61 should be compatible with Java 17. Are you sure 17 is the version that is being used when this error occurs? — Jeff Scott Brown, Jan 05 '22 at 19:39
`java -version` Returns `java version "17.0.1" 2021-10-19 LTS` in the terminal so I do think so. — lendo, Jan 05 '22 at 19:40
Try updating to Gradle 7.3.3. https://github.com/gradle/gradle/issues/16857 — mdatwood, Jan 05 '22 at 22:14
For a workaround, use JDK 16. The error says that 'Class version 61 is unsupported'. '61' here refers to JDK 17. So either upgrade your Gradle version, or use JDK 16. Also, post the log after running 'gradlew -v' command, after upgrading gradle. To upgrade gradle, modify the gradle-wrapper.properties file — JustinW, Jan 06 '22 at 06:04
Umm, no. You can keep both JDKs side-by-side. Install the zipped JDK 16, unzip it somewhere, and then point the org.gradle.java.home variable in gradle.properties towards it. — JustinW, Jan 06 '22 at 12:42
@JustInCoding Might as well let you know your method worked like a charm. Appreciate it! — lendo, Jan 06 '22 at 18:53
You're welcome. You can post it as an answer and mark it as accepted. I won't mind :) — JustinW, Jan 07 '22 at 06:14
Does this answer your question? [How to fix java.lang.UnsupportedClassVersionError: Unsupported major.minor version](https://stackoverflow.com/questions/10382929/how-to-fix-java-lang-unsupportedclassversionerror-unsupported-major-minor-versi) — Johannes Kuhn, Nov 16 '22 at 02:35

score 9 · Accepted Answer · answered Jan 07 '22 at 12:30

9

Answered by @JustInCoding, the solution for me was to install JDK 16, and then add org.gradle.java.home=your Jdk 16 path here in the gradle.properties file of my project.

answered Jan 07 '22 at 12:30

lendo

190
2
10

3

April 2022: this issue is still resolve using JDK 16. I'm using windows so my path is `org.gradle.java.home=C:\\Program Files\\Java\\jdk-16.0.2` – ymz Apr 28 '22 at 15:56
on the official page, it says JDK 16 has been suspended, https://jdk.java.net/16 i guess the second answer should be the most recent accepted answer – Buchi Dec 12 '22 at 14:51

score 1 · Answer 2 · answered Nov 16 '22 at 02:15

1

Alternative solution that worked for me was to update gradle to 7.4.2.

answered Nov 16 '22 at 02:15

jamsandwich

367
5
11

Still the same error for me – Bart Dec 22 '22 at 11:40

Unsupported class file major version 61 Cordova Mac

2 Answers2